17470(101) - 31-Dec-2025 15:53:11 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17470 Version: 101 Check-in Time: 31-Dec-2025 15:53:11 STScI Edit Number: 62 Title HST-Juno Io Campaign: Connecting Volcanos to the Plasma Environment ------------------------------------------------------------------------------------ Type Cycle GO 31 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Kurt David Retherford Southwest Research Institute Y CoI: Dr. Fran Bagenal University of Colorado at Boulder N CoI: Dr. Lorenz Roth Royal Institute of Technology N CoI: Prof. Katherine de Kleer California Institute of Technology N CoI: Dr. Tracy M Becker Southwest Research Institute N CoI: Dr. Nathaniel J. Cunningham Nebraska Wesleyan University N CoI: Dr. G. Randall Gladstone Southwest Research Institute N CoI: Dr. Vincent Hue Aix-Marseille University N CoI: Dr. Joshua Kammer Southwest Research Institute N CoI: Dr. Pippa Molyneux Southwest Research Institute N CoI: Prof. Jonathan David Nichols University of Leicester N CoI: Dr. Samantha Trumbo University of California - San Diego N CoI: Dr. Michael Anthony Velez Southwest Research Institute N CoI: Matthew Burger Space Telescope Science Institute N CoI: Dr. Vincent J Dols University of Colorado at Boulder N CoI: Dr. Edward Nerney University of Colorado at Boulder N CoI: Dr. Carl Schmidt Boston University N CoI: Dr. Howard Todd Smith The Johns Hopkins University Applied N Physics Laboratory CoI: Dr. Lori M. Feaga University of Maryland N CoI: Dr. Amanda R. Hendrix Planetary Science Institute N CoI: Dr. Kandis Lea Jessup Southwest Research Institute N CoI: Emmanuel Lellouch Observatoire de Paris - Section de Meudon N CoI: Dr. Melissa A. McGrath SETI Institute N CoI: Dr. Joachim Saur Universitat zu Koln N CoI: Dr. John R. Spencer Southwest Research Institute N CoI: Dr. Shawn Brueshaber Michigan Technological University N CoI: Dr. Thomas Kirk Greathouse Southwest Research Institute N CoI: Dr. Candice Hansen Planetary Science Institute N CoI: Mr. Thomas Momary Jet Propulsion Laboratory N CoI: Dr. Alessandro Mura INAF - Istituto di Astrofisica e N Planetologia Spaziali CoI: Dr. Glenn S. Orton Jet Propulsion Laboratory N ------------------------------------------------------------------------------------ Abstract Io is the most volcanically active body in the solar system and its escaping atmosphere is the dominant source of material for the Jovian magnetosphere. Despite decades of research and major advances in understanding individual processes and features, the connections between Io's volcanos, surface volatiles, atmosphere, magnetospheric plasma-interaction, and beyond to Io's neutral cloud, the Io Plasma Torus, and Jupiter's ionosphere, all remain difficult to quantify and understand. Juno, a polar orbiter originally designed to study Jupiter's deep interior, 17470(101) - 31-Dec-2025 15:53:11 - [ 2] magnetosphere, and aurora, is now in an extended mission focused on studying the Galilean satellites. Juno's upcoming Io flybys in Cycle 31 offer an excellent opportunity for combining Juno's intensive in situ measurements with Earth-based remote sensing to advance our understanding of Io's role in driving coupled phenomena within the Jupiter system. Two flybys come within ~1500 km of Io, with a third more distant encounter at ~120, 000 km. Our HST-Juno Io campaign performs numerous coordinated Io observations to take full advantage of this opportunity for combining in situ and remote sensing datasets within a comprehensive modeling framework (not otherwise possible until the late 2030's). We plan multi-spectral, multi-instrument HST observations of the following types: Io neutral cloud profiling and ansae stares, Io FUV aurora imaging, Io transit imaging, Io eclipse imaging (with hot spot and time series studies), and Io surface mapping. Coordinated JWST MIRI/MRS IFU measurements of Io's 7.3 um SO2 band and newly detected 5 um features are requested for Juno's Sep. 2024 encounter (following plans for JWST program 4078). ------------------------------------------------------------------------------------ Observations Description ------------------------ We identify five needed measurement types to investigate the five science themes. This implementation approach and scope has considered the schedulability of moving target observations, including the 2-orbit per visit constraint under 2-gyro mode. The first two Juno flybys in Dec. 2023 and Feb. 2024 approach closer to Io than the one in Sept. 2024. Hence the earlier encounters are higher priority and with more visits. The STScI help desk confirmed that PJ57 & PJ58 are not impacted by the South Atlantic Anomaly (SAA). Io Neutral Cloud Profiling and Ansae Stares: The Io neutral cloud profiling technique includes six sets of two nearly consecutive visits, each with two orbits STIS G140L 52x2 and two orbits of COS G130M. The STIS FUV measurements start at Io, step left of Io by 2" and then step right of Io by 2" for a view of its near-Io (<10 R_Io) neutral emissions in each of two consecutive orbits per visit. The two orbits provide radial profiles to enable characterization for hemispherical asymmetries near-Io hinted at (but indistinguishable) in previous data. In near-consecutive visits, COS 130M step-scans start on Io with high SNR and step along the orbital plane and perpendicular to it in the two respective orbits (if HST pitch and roll slew angles are required instead our large program is flexible in this way). Each step within the orbit has progressively longer exposures to provide similar error bars at each point along a power-law fall-off in distance (-0.025 R/RIo, as determined with New Horizons Alice spectral imaging to 1 R sensitivity; we expect better, down to ~0.1 R with COS). That is, ~1 min * 2N each for 0pt (on Io), 5 RIo, 10 RIo, 20 RIo, and 40 RIo, and then dwell at 80 RIo for the remainder of an HST orbit (up to 20 min). These times can be adjusted as informed by first visit (e.g., change 2N to 1.8N) and tailored for each scan direction. The COS time-tag mode allows data acquisition while slewing between steps (or possibly scan with decreasing angular velocity away from Io). The six visits cover Io at leading/trailing and sub-/anti-jovian orbital longitudes, with the leading and trailing repeated near the end of Cy31. Additional visits with Io at the east and west ansae, 2 orbits each, use the STIS G140M 1285 mode and 52x0.5 slit with four 0.5"-step positions covering Io to obtain spectrally separated images of neutral sulfur SI 125.1 nm and 17470(101) - 31-Dec-2025 15:53:11 - [ 3] ionized SII 125.6 nm emissions for near-Io ionospheric chemistry modeling. Four orbits with COS 130M are planned at each of two geometries targeting the east and west ansae of Io's orbit while Io is at the direct opposite ansa. These long stares determine the furthest extent of neutrals within the environment and their relation to the torus; previous data show ~1-3 R O & S signals over very large spatial scales, which needs better characterization. Another visit with two orbits is planned with COS G230L to constrain the Mg species in Io's atmosphere and trailing hemisphere plasma environment. To address the topic of where the Io neutral cloud environment leaves off and the Europa neutral cloud or tori dominates we plan identical COS G130M step-scan observation orthogonal pairs starting on Europa but ranging out to 20 R_Europa instead and 2-orbit STIS G140L 52x2 context images. Total for neutral cloud mapping: 46 orbits. Io FUV Aurora Imaging: STIS G140L 52x2D1 images are planned closest in time as possible for each of the three Juno C/A events. Our early checks indicate that SAA-exclusions will not overlap with these key times. Three 2-orbit visits are planned for a series of 6 orbits covering the three C/A event times, with one visit likely shifted to follow or precede the SAA-exclusion time. The two consecutive 2-orbit visits cover more than half a synodic period of Jupiter's magnetic field orientation changing at Io, providing good temporal coverage of the rocking of the aurora equatorial spot locations for investigation the plasma-atmosphere interaction in detail; the additional near-consecutive 2-orbit visit completes the full synodic period coverage. For ease of scheduling within SAA constraints, just four orbits each are planned for Juno plasma sheet crossings on PJ59 in early March and PJ64 in mid-August, timed such that Io is exposed to the plasma probed earlier by Juno. Each of the 5 perijoves by Juno in the observable windows for Cy31 offers opportunities for joint Io aurora STIS imaging during both Juno-UVS Io footprint imaging and/or views of Io from Juno-UVS while in a radiation quite zone near Jupiter and ~6 R_J range. Two-orbit visits for 3 such occurrences are planned (with the 6 neutral cloud series also possibly available for coordination). Any orbits lost to gyro problems would best be replanned to extend the series during future events, as possible. Total for FUV auroral spot imaging: 32 orbits. Io Transit Imaging: With Io's 1.7 day orbital period roughly 60 (35) transit events are available early (late) in Cy31 (similarly but less so for eclipse events), with one and sometimes two HST orbits possible in each event. We search for plume gas variability in 4 events using STIS MAMA F25QTZ FUV imaging using the dither method implemented previously for Europa to obtain ~30 km/pix resolution elements with 1-orbit per event. Two additional orbits using the same longpass (>150 nm) F25QTZ filter would assess any faint auroral emission or disk reflectance PSF systematic features. Imaging mostly dust absorption at visible wavelengths, transit events near the beginning and end of Cy31 (1-orbit each) are planned with WFC3 filter sets (F225W, F280N, F336W, F343N, F390W, F475W, F555W). STIS NUV spectral imaging demonstrated SO2 and S2 absorption with G230LB. We plan four separate transit events using STIS G230M centered at c2095 & c2659 for mapping the deepest SO2 & S2 absorption features, respectively (2 events each). The 52x0.5 slit is used with a set of five or more 0.1" step-offsets, expecting to improve on previous resolutions and noise (using NUV 17470(101) - 31-Dec-2025 15:53:11 - [ 4] MAMA vs CCD). Lastly, 4 transit events use the COS 225M mode to measure SO2 absorption features (210-234 nm); these include one or two off-Io pointings at ~3 R_Io and/or 5 RIo (as time allows) and also a pointing farther away to provide the Jupiter background divisor spectrum (i.e., pointing back towards the location on Jupiter recently transited) in 1-orbit. A fifth orbit observes Io in sunlight with COS G225M just before or after transit to characterize its disk spectrum for comparison with the off-Io data. Total for Io transit imaging: 17 orbits. Io Eclipse Imaging, Loki Hot Spot, and Time Series: Observations in Jupiter's shadow offer the best ability to image Loki's hot-spot thermal and auroral emissions without the overwhelming component of reflected sunlight. The STIS G750L 52x0.1E1 slit targets the Loki hot spot, staring at ~13N, 309W for one orbit and performing a three-step scan across it in an orbit during a different event to provide partial mapping of additional hot spots and/or provide an improved spectral background removal when extracting the black-body spectral reddening. The two orbits described occur for the post-ingress geometry to optimize pointing. For auroral SO2 and potentially S2 studies one orbit with STIS G430M c4706 52x2 targets a not yet confirmed S2 aurora spectral peak in previous G430L eclipse observations. Io Na doublet auroral images overlap when using the 52x2 slit, so an orbit with the G750M c6094 52x0.5E1 mode uses three steps across Io to image sodium (~2kR) simultaneously with oxygen red-line 630 nm emissions (~20-30kR). Two additional orbits search for auroral H-alpha and K features, with G750M 52x2E1 at c6768 and c7795, respectively. Angular separations of >20" from Jupiter are needed to avoid Jupiter straylight. While COS G130M and G225M spectra of Io in and out of eclipse have been performed (PID=11539), Io COS G230L c3000 (PID=12041) and STIS G230LB spectra have only been obtained while in sunlight. Two visits viewing pairs of orbits, one in eclipse and one just before ingress and one paired just after egress with COS G230L c2635 will search for changes to SO2, SO, and S2 emissions with time in and out of shadow. Lastly, one orbit of STIS G230LB eclipse imaging identifies the locations of any emissions searched for more sensitively with the COS G230L eclipse spectra. Total for Io eclipse spectra & imaging: 11 orbits. Io Surface Mapping: To search for changes in Io's surface coloration and the associated spectral features resulting from active volcanism we plan a few sets of visits spanning HST wavelengths. STIS G430L and G750L modes use the 52x0.05E1 aperture with 0.025" steps across Io's 0.9-1.2" disk, targeting the leading and trailing hemispheres largely spanned by PJ57 & PJ58 (planned later in Cy31), complementing the previous geometries of PID=15925, and capturing the entire Pele region (19S, 225W) all with ~2" better spatial resolution. STIS G140L FUV spectral maps similarly use the 52x0.2D1 slit with 0.1" steps to cover the full disk with two orbits (needed for SNR) in each of 4 visits centered at orbital longitudes 45, 135, 225, and 315 deg. COS G130M c1055 mode spectra of Io's leading and trailing hemispheres investigate Io's extreme-UV albedo ratios with two orbits each. The two COS G230L observations pre-ingress and post-egress described above complete the spectral coverage story, but primarily indicate molecular gas absorptions rather than albedo. Total for Io surface mapping: 16 orbits. ------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 5] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 TARGET NAME: IO-NCLOUD-SUBJUPITER ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io Neutral Cloud targeted STIS Step-scan set of three 2 arcsecond steps and a Sub-Jupiter pointed COS-Scan pattern ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-NCLOUD-SUBJUPITER BY JUPITER FROM EARTH, SEP OF IO-NCLOUD-SUBJUPITER EUROPA FROM EARTH GT 10", SEP OF IO-NCLOUD-SUBJUPITER GANYMEDE FROM EARTH GT 10", SEP OF IO-NCLOUD-SUBJUPITER CALLISTO FROM EARTH GT 10", OLG OF IO-NCLOUD-SUBJUPITER BETWEEN 315 45 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Start at Io and scan both sides around it with STIS and OLG 315 TO 45; STIS Step-scan & COS-Scan in one direction away from it with COS to determine extent of detectable emissions several tens of arcseconds Ephemeris Center: EARTH away from Io Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 6] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 2 TARGET NAME: IO-NCLOUD-LEADING ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io Neutral Cloud STIS Step-scan & COS-Scan viewing Io's leading hemisphere ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-NCLOUD-LEADING BY JUPITER FROM EARTH, SEP OF IO-NCLOUD-LEADING EUROPA FROM EARTH GT 10", SEP OF IO-NCLOUD-LEADING GANYMEDE FROM EARTH GT 10", SEP OF IO-NCLOUD-LEADING CALLISTO FROM EARTH GT 10", OLG OF IO-NCLOUD-LEADING BETWEEN 45 135 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 45 TO 135; STIS Step-scan & COS-Scan Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 7] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 102 TARGET NAME: IO-NCLOUD-LEADING2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io Neutral Cloud STIS Step-scan & COS-Scan viewing Io's leading hemisphere ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-NCLOUD-LEADING2 BY JUPITER FROM EARTH, SEP OF IO-NCLOUD-LEADING2 EUROPA FROM EARTH GT 10", SEP OF IO-NCLOUD-LEADING2 GANYMEDE FROM EARTH GT 10", SEP OF IO-NCLOUD-LEADING2 CALLISTO FROM EARTH GT 10", OLG OF IO-NCLOUD-LEADING BETWEEN 45 135 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 45 TO 135; STIS Step-scan & COS-Scan Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 8] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 3 TARGET NAME: IO-NCLOUD-ANTIJUPITER ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io Neutral Cloud STIS Step-scan & COS-Scan viewing Io's anti-Jupiter hemisphere ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-NCLOUD-ANTIJUPITER BY JUPITER FROM EARTH, SEP OF IO-NCLOUD-ANTIJUPITER EUROPA FROM EARTH GT 10", SEP OF IO-NCLOUD-ANTIJUPITER GANYMEDE FROM EARTH GT 10", SEP OF IO-NCLOUD-ANTIJUPITER CALLISTO FROM EARTH GT 10", OLG OF IO-NCLOUD-ANTIJUPITER BETWEEN 135 225 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 135 TO 225; STIS Step-scan & COS-Scan Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 9] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 4 TARGET NAME: IO-NCLOUD-TRAILING ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io Neutral Cloud STIS Step-scan & COS-Scan viewing Io's trailing hemisphere ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-NCLOUD-TRAILING BY JUPITER FROM EARTH, SEP OF IO-NCLOUD-TRAILING EUROPA FROM EARTH GT 10", SEP OF IO-NCLOUD-TRAILING GANYMEDE FROM EARTH GT 10", SEP OF IO-NCLOUD-TRAILING CALLISTO FROM EARTH GT 10", OLG OF IO-NCLOUD-TRAILING BETWEEN 225 315 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 225 TO 315; STIS Step-scan & COS-Scan Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 10] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 5 TARGET NAME: IO-PLASMATORUS-LEADING ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io Plasma Torus Leading Hemisphere Scan ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-PLASMATORUS-LEADING BY JUPITER FROM EARTH, SEP OF IO-PLASMATORUS-LEADING EUROPA FROM EARTH GT 10", SEP OF IO-PLASMATORUS-LEADING GANYMEDE FROM EARTH GT 10", SEP OF IO-PLASMATORUS-LEADING CALLISTO FROM EARTH GT 10", OLG OF IO-PLASMATORUS-LEADING BETWEEN 45 135 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 .. OLG 45 TO 135; STIS G140M Near-Io Torus Scan Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 11] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 6 TARGET NAME: IO-PLASMATORUS-TRAILING ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io Plasma Torus Trailing Hemisphere Scan ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-PLASMATORUS-TRAILING BY JUPITER FROM EARTH, SEP OF IO-PLASMATORUS-TRAILING EUROPA FROM EARTH GT 10", SEP OF IO-PLASMATORUS-TRAILING GANYMEDE FROM EARTH GT 10", SEP OF IO-PLASMATORUS-TRAILING CALLISTO FROM EARTH GT 10", OLG OF IO-PLASMATORUS-TRAILING BETWEEN 225 315 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 .. OLG 225 TO 315; STIS G140M Near-Io Torus Scan Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 12] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 7 TARGET NAME: NCLOUD-EASTANSA ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: TORUS Io Neutral Cloud COS Stare with No Io at its orbital ansa point east of Jupiter (would be the leading/dawn-side) ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=CALLISTO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS TYPE=POS_ANGLE, RAD=35, ANG=260, REF=NORTH NOT OCC OF NCLOUD-EASTANSA BY JUPITER FROM EARTH, SEP OF NCLOUD-EASTANSA IO FROM EARTH GT 10", SEP OF NCLOUD-EASTANSA EUROPA FROM EARTH GT 10", SEP OF NCLOUD-EASTANSA GANYMEDE FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 COS East Ansa Stare No Io Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 13] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 8 TARGET NAME: NCLOUD-WESTANSA ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: TORUS Io Neutral Cloud COS Stare with No Io at its orbital ansa point wast of Jupiter (would be the trailing/dusk-side) ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER TYPE=TORUS, LONG=90, LAT=0, RAD=4.22e5, POLE_LONG=0, POLE_LAT=90 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF NCLOUD-WESTANSA BY JUPITER FROM EARTH, NOT ECL P PARTIAL OF NCLOUD-WESTANSA BY IO FROM EARTH, NOT ECL P PARTIAL OF NCLOUD-WESTANSA BY EUROPA FROM EARTH, NOT ECL P PARTIAL OF NCLOUD-WESTANSA BY GANYMEDE FROM EARTH, NOT ECL P PARTIAL OF NCLOUD-WESTANSA BY CALLISTO FROM EARTH, SEP OF NCLOUD-WESTANSA IO FROM EARTH GT 10", SEP OF NCLOUD-WESTANSA EUROPA FROM EARTH GT 10", SEP OF NCLOUD-WESTANSA GANYMEDE FROM EARTH GT 10", SEP OF NCLOUD-WESTANSA CALLISTO FROM EARTH GT 10", OLG OF NCLOUD-WESTANSA BETWEEN 260 280 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 COS West Ansa Stare No Io Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 14] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 9 TARGET NAME: IO-NCLOUD-TRAILING-NUV ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io Neutral Cloud COS Stare viewing Io's trailing hemisphere ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-NCLOUD-TRAILING-NUV BY JUPITER FROM EARTH, SEP OF IO-NCLOUD-TRAILING-NUV EUROPA FROM EARTH GT 10", SEP OF IO-NCLOUD-TRAILING-NUV GANYMEDE FROM EARTH GT 10", SEP OF IO-NCLOUD-TRAILING-NUV CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 225 TO 315; COS Io Stare Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 15] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 10 TARGET NAME: EUROPA-NCLOUD-EASTANSA ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Europa Neutral Cloud STIS Step-scan & COS-Scan viewing Europa's leading hemisphere ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER TYPE=TORUS, LONG=270, LAT=0, RAD=6.65e5, POLE_LONG=0, POLE_LAT=90 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS OLG OF EUROPA-NCLOUD-EASTANSA BETWEEN 45 135, NOT OCC OF EUROPA-NCLOUD-EASTANSA BY JUPITER FROM EARTH, NOT ECL P PARTIAL OF EUROPA-NCLOUD-EASTANSA BY IO FROM EARTH, NOT ECL P PARTIAL OF EUROPA-NCLOUD-EASTANSA BY EUROPA FROM EARTH, NOT ECL P PARTIAL OF EUROPA-NCLOUD-EASTANSA BY GANYMEDE FROM EARTH, NOT ECL P PARTIAL OF EUROPA-NCLOUD-EASTANSA BY CALLISTO FROM EARTH, SEP OF EUROPA-NCLOUD-EASTANSA IO FROM EARTH GT 10", SEP OF EUROPA-NCLOUD-EASTANSA EUROPA FROM EARTH GT 10", SEP OF EUROPA-NCLOUD-EASTANSA GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-NCLOUD-EASTANSA CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 45 TO 135; STIS Stare & COS-Scan Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 16] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 11 TARGET NAME: EUROPA-NCLOUD-WESTANSA ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Europa Neutral Cloud STIS Step-scan & COS-Scan viewing Europa's trailing hemisphere ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER TYPE=TORUS, LONG=90, LAT=0, RAD=6.65e5, POLE_LONG=0, POLE_LAT=90 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS OLG OF EUROPA-NCLOUD-WESTANSA BETWEEN 225 315, NOT OCC OF EUROPA-NCLOUD-WESTANSA BY JUPITER FROM EARTH, NOT ECL P PARTIAL OF EUROPA-NCLOUD-WESTANSA BY IO FROM EARTH, NOT ECL P PARTIAL OF EUROPA-NCLOUD-WESTANSA BY EUROPA FROM EARTH, NOT ECL P PARTIAL OF EUROPA-NCLOUD-WESTANSA BY GANYMEDE FROM EARTH, NOT ECL P PARTIAL OF EUROPA-NCLOUD-WESTANSA BY CALLISTO FROM EARTH, SEP OF EUROPA-NCLOUD-WESTANSA IO FROM EARTH GT 10", SEP OF EUROPA-NCLOUD-WESTANSA EUROPA FROM EARTH GT 10", SEP OF EUROPA-NCLOUD-WESTANSA GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-NCLOUD-WESTANSA CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 225 TO 315; STIS Stare & COS-Scan Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 17] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 20 TARGET NAME: IO-AURORA-PJ57 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io aurora STIS G140L 52x2 during Juno PJ57 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-AURORA-PJ57 BY JUPITER FROM EARTH, SEP OF IO-AURORA-PJ57 EUROPA FROM EARTH GT 10", SEP OF IO-AURORA-PJ57 GANYMEDE FROM EARTH GT 10", SEP OF IO-AURORA-PJ57 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Juno Perijove 57 Dec 30, 2023 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 21 TARGET NAME: IO-AURORA-PJ58 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io aurora STIS G140L 52x2 during Juno PJ58 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-AURORA-PJ58 BY JUPITER FROM EARTH, SEP OF IO-AURORA-PJ58 EUROPA FROM EARTH GT 10", SEP OF IO-AURORA-PJ58 GANYMEDE FROM EARTH GT 10", SEP OF IO-AURORA-PJ58 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Juno Perijove 58 Feb 3, 2023 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 18] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 22 TARGET NAME: IO-AURORA-PJ59 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io aurora STIS G140L 52x2 during Juno PJ59 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-AURORA-PJ59 BY JUPITER FROM EARTH, SEP OF IO-AURORA-PJ59 EUROPA FROM EARTH GT 10", SEP OF IO-AURORA-PJ59 GANYMEDE FROM EARTH GT 10", SEP OF IO-AURORA-PJ59 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Juno Perijove 59 Mar 7, 2023 (close to Elong. 55 deg) Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 23 TARGET NAME: IO-AURORA-PJ64 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io aurora STIS G140L 52x2 during Juno PJ64 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-AURORA-PJ64 BY JUPITER FROM EARTH, SEP OF IO-AURORA-PJ64 EUROPA FROM EARTH GT 10", SEP OF IO-AURORA-PJ64 GANYMEDE FROM EARTH GT 10", SEP OF IO-AURORA-PJ64 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Juno Perijove 64 Aug 18, 2024 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 19] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 24 TARGET NAME: IO-AURORA-PJ66 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: DWARF-PLANET Io aurora STIS G140L 52x2 during Juno PJ65 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-AURORA-PJ66 BY JUPITER FROM EARTH, SEP OF IO-AURORA-PJ66 EUROPA FROM EARTH GT 10", SEP OF IO-AURORA-PJ66 GANYMEDE FROM EARTH GT 10", SEP OF IO-AURORA-PJ66 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Juno Perijove 66 Oct 22, 2024 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 25 TARGET NAME: IO-AURORA-UVS1 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io aurora STIS G140L 52x2 during Juno-UVS Coordinated Obs. 1 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-AURORA-UVS1 BY JUPITER FROM EARTH, SEP OF IO-AURORA-UVS1 EUROPA FROM EARTH GT 10", SEP OF IO-AURORA-UVS1 GANYMEDE FROM EARTH GT 10", SEP OF IO-AURORA-UVS1 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Juno-UVS Near-Jupiter Io Observations PJ57 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 20] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 27 TARGET NAME: IO-AURORA-UVS2-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io aurora STIS G140L 52x2 during Juno-UVS Coordinated Obs. 2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-AURORA-UVS2-ECLIPSE BY JUPITER FROM EARTH, OLG OF IO-AURORA-UVS2-ECLIPSE FROM EARTH BETWEEN 330 360 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Originally the aim was to observe Io emerging from Juno-UVS Near-Jupiter Io Observations PJ59 eclipse. Due to the restricted field of regard for HST, egress can Ephemeris Center: EARTH not be observed in cycle 32 and we therefore changed the Extended: YES constraints to ingress / eclipse ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 30 TARGET NAME: IO-AURORA-UVS3 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io aurora STIS G140L 52x2 during Juno-UVS Coordinated Obs. 3 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-AURORA-UVS3 BY JUPITER FROM EARTH, SEP OF IO-AURORA-UVS3 EUROPA FROM EARTH GT 10", SEP OF IO-AURORA-UVS3 GANYMEDE FROM EARTH GT 10", SEP OF IO-AURORA-UVS3 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 This orbital perijove away from Io provides improved Juno-UVS Near-Jupiter Io Observations PJ65 Juno-UVS datasets, owing to less radiation environment at the time of planned distant observations . Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 21] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 40 TARGET NAME: IO-TRANSIT-FUV ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io transiting Jupiter with STIS FUV imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-TRANSIT-FUV BY JUPITER FROM EARTH, SEP OF IO-TRANSIT-FUV EUROPA FROM EARTH GT 10", SEP OF IO-TRANSIT-FUV GANYMEDE FROM EARTH GT 10", SEP OF IO-TRANSIT-FUV CALLISTO FROM EARTH GT 10", TRANSIT OF IO-TRANSIT-FUV ACROSS JUPITER FROM EARTH, OLG OF IO-TRANSIT-FUV FROM EARTH BETWEEN 175 185 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Dither pattern from Sparks Europa plume imaging program Jupiter v-magnitude -2.4+/-0.4; Io OLG 180+/-5; STIS FUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 22] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 140 TARGET NAME: IO-TRANSIT-FUV2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io transiting Jupiter with STIS FUV imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS TRANSIT OF IO-TRANSIT-FUV2 ACROSS JUPITER FROM EARTH, OLG OF IO-TRANSIT-FUV FROM EARTH BETWEEN 175 185, NOT OCC OF IO-TRANSIT-FUV2 BY JUPITER FROM EARTH, SEP OF IO-TRANSIT-FUV2 EUROPA FROM EARTH GT 10", SEP OF IO-TRANSIT-FUV2 GANYMEDE FROM EARTH GT 10", SEP OF IO-TRANSIT-FUV2 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Skip a Level 3 or dither pattern from Sparks Europa plume Jupiter v-magnitude -2.4+/-0.4; Io OLG 180+/-5; STIS FUV imaging program - they saw a drift and this method didn't seem to work as hoped for. Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 23] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 205 TARGET NAME: IO-TRANSIT-NUV4 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io transiting Jupiter with STIS NUV imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS TRANSIT OF IO-TRANSIT-FUV ACROSS JUPITER FROM EARTH, OLG OF IO-TRANSIT-FUV FROM EARTH BETWEEN 175 185, NOT OCC OF IO-TRANSIT-NUV4 BY JUPITER FROM EARTH, SEP OF IO-TRANSIT-NUV4 EUROPA FROM EARTH GT 10", SEP OF IO-TRANSIT-NUV4 GANYMEDE FROM EARTH GT 10", SEP OF IO-TRANSIT-NUV4 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 No Dither pattern Jupiter v-magnitude -2.4+/-0.4; Io OLG 180+/-5; STIS FUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 24] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 41 TARGET NAME: IO-POSTTRANSIT-FUV ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io just after transiting Jupiter with STIS FUV imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-POSTTRANSIT-FUV BY JUPITER FROM EARTH, SEP OF IO-POSTTRANSIT-FUV EUROPA FROM EARTH GT 10", SEP OF IO-POSTTRANSIT-FUV GANYMEDE FROM EARTH GT 10", SEP OF IO-POSTTRANSIT-FUV CALLISTO FROM EARTH GT 10", NOT TRANSIT OF IO-POSTTRANSIT-FUV ACROSS JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Could be 1 Io orbit later/earlier, want to avoid Jupiter Jupiter v-magnitude -2.4+/-0.4; Io OLG 180+/-5; STIS FUV limb with 25" fov of aperture but still have Io limb context ~similar to transit OLG Ephemeris Center: EARTH Use same artificial satellite dither pattern used for Extended: YES IO-TRANSIT-FUV ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 25] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 141 TARGET NAME: IO-POSTTRANSIT-FUV2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io just after transiting Jupiter with STIS FUV imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT TRANSIT OF IO-POSTTRANSIT-FUV ACROSS JUPITER FROM EARTH, NOT OCC OF IO-POSTTRANSIT-FUV2 BY JUPITER FROM EARTH, SEP OF IO-POSTTRANSIT-FUV2 EUROPA FROM EARTH GT 10", SEP OF IO-POSTTRANSIT-FUV2 GANYMEDE FROM EARTH GT 10", SEP OF IO-POSTTRANSIT-FUV2 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Could be 1 Io orbit later/earlier, want to avoid Jupiter Jupiter v-magnitude -2.4+/-0.4; Io OLG 180+/-5; STIS FUV limb with 25" fov of aperture but still have Io limb context ~similar to transit OLG Ephemeris Center: EARTH Skip a Level 3 or dither pattern Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 26] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 42 TARGET NAME: IO-TRANSIT-WFC3 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io transiting Jupiter with WFC3 imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-TRANSIT-WFC3 BY JUPITER FROM EARTH, SEP OF IO-TRANSIT-WFC3 EUROPA FROM EARTH GT 3", SEP OF IO-TRANSIT-WFC3 GANYMEDE FROM EARTH GT 3", SEP OF IO-TRANSIT-WFC3 CALLISTO FROM EARTH GT 3", TRANSIT OF IO-TRANSIT-WFC3 ACROSS JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Jupiter v-magnitude -2.4+/-0.4; OLG 180+/-5; STIS FUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 27] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 43 TARGET NAME: IO-TRANSIT-STISNUV ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io transiting Jupiter with STIS NUV spectral imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-TRANSIT-STISNUV BY JUPITER FROM EARTH, SEP OF IO-TRANSIT-STISNUV EUROPA FROM EARTH GT 10", SEP OF IO-TRANSIT-STISNUV GANYMEDE FROM EARTH GT 10", SEP OF IO-TRANSIT-STISNUV CALLISTO FROM EARTH GT 10", TRANSIT OF IO-TRANSIT-STISNUV ACROSS JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Jupiter v-magnitude -2.4+/-0.4; OLG 180+/-5; STIS FUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 28] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 143 TARGET NAME: IO-TRANSIT-STISNUV2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io transiting Jupiter with STIS NUV spectral imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-TRANSIT-STISNUV2 BY JUPITER FROM EARTH, SEP OF IO-TRANSIT-STISNUV2 EUROPA FROM EARTH GT 10", SEP OF IO-TRANSIT-STISNUV2 GANYMEDE FROM EARTH GT 10", SEP OF IO-TRANSIT-STISNUV2 CALLISTO FROM EARTH GT 10", TRANSIT OF IO ACROSS JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Jupiter v-magnitude -2.4+/-0.4; OLG 180+/-5; STIS FUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 44 TARGET NAME: IO-TRANSIT-COSNUV ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io transiting Jupiter with COS NUV spectroscopy ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-TRANSIT-COSNUV BY JUPITER FROM EARTH, SEP OF IO-TRANSIT-COSNUV EUROPA FROM EARTH GT 10", SEP OF IO-TRANSIT-COSNUV GANYMEDE FROM EARTH GT 10", SEP OF IO-TRANSIT-COSNUV CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Jupiter v-magnitude -2.4+/-0.4; OLG 180+/-5; STIS FUV Ephemeris Center: EARTH Extended: YES 17470(101) - 31-Dec-2025 15:53:11 - [ 29] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 46 TARGET NAME: IO-TRANSIT-COSNUV2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io transiting Jupiter with COS NUV spectroscopy ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-TRANSIT-COSNUV2 BY JUPITER FROM EARTH, SEP OF IO-TRANSIT-COSNUV2 EUROPA FROM EARTH GT 10", SEP OF IO-TRANSIT-COSNUV2 GANYMEDE FROM EARTH GT 10", SEP OF IO-TRANSIT-COSNUV2 CALLISTO FROM EARTH GT 5", SEP OF IO JUPITER FROM EARTH LT 5" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Copy of target 44 to be used with visit 53 Jupiter v-magnitude -2.4+/-0.4; OLG 180+/-5; STIS FUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 30] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 45 TARGET NAME: IO-POSTTRANSIT-COSNUV ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io after transiting Jupiter with COS NUV spectroscopy ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-POSTTRANSIT-COSNUV BY JUPITER FROM EARTH, SEP OF IO-POSTTRANSIT-COSNUV EUROPA FROM EARTH GT 10", SEP OF IO-POSTTRANSIT-COSNUV GANYMEDE FROM EARTH GT 10", SEP OF IO-POSTTRANSIT-COSNUV CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Jupiter v-magnitude -2.4+/-0.4; OLG 180+/-5; STIS FUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 31] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 60 TARGET NAME: IO-ECLIPSE-VIS-LOKI-STARE ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io in eclipse by Jupiter with STIS VIS spectral imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS TYPE=PGRAPHIC, LONG=308.79, LAT=13.01 ECL U FULL OF IO-ECLIPSE-VIS-LOKI-STARE BY JUPITER FROM EARTH, NOT OCC OF IO-ECLIPSE-VIS-LOKI-STARE BY IO FROM EARTH, NOT OCC OF IO-ECLIPSE-VIS-LOKI-STARE BY JUPITER FROM EARTH, SEP OF IO-ECLIPSE-VIS-LOKI-STARE EUROPA FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-LOKI-STARE GANYMEDE FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-LOKI-STARE CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Target OLG window is determined based on: OLG 0+/-20; In Jupiter Shadow, but not occulted -1.769 day orbital period of Io -umbral eclipse begins at TBC +/-0.1 degrees OLG measured Ephemeris Center: EARTH from Sun in Aug 2024 - Sep 2024 Extended: YES -3000s exposure time available in the second orbit. -want to get all of Io in eclipse Override default SEP between Io and Jupiter to allow observation in/near eclipse ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 32] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 61 TARGET NAME: IO-ECLIPSE-VIS-LOKI-SCAN ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: OFFSET Io in eclipse by Jupiter with STIS VIS spectral imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS TYPE=PGRAPHIC, LONG=308.79, LAT=13.01 ECL U FULL OF IO-ECLIPSE-VIS-LOKI-SCAN BY JUPITER FROM EARTH, NOT OCC OF IO-ECLIPSE-VIS-LOKI-SCAN BY IO FROM EARTH, NOT OCC OF IO-ECLIPSE-VIS-LOKI-SCAN BY JUPITER FROM EARTH, SEP OF IO-ECLIPSE-VIS-LOKI-SCAN EUROPA FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-LOKI-SCAN GANYMEDE FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-LOKI-SCAN CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Target OLG window is determined based on: OLG 0+/-20; In Jupiter Shadow, but not occulted -1.769 day orbital period of Io -umbral eclipse begins at TBC +/-0.1 degrees OLG measured Ephemeris Center: EARTH from Sun in Aug 2024 - Sep 2024 Extended: YES -3000s exposure time available in the second orbit. -want to get all of Io in eclipse Override default SEP between Io and Jupiter to allow observation in/near eclipse ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 33] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 62 TARGET NAME: IO-ECLIPSE-VIS-S2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io in eclipse by Jupiter with STIS VIS spectral imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-ECLIPSE-VIS-S2 BY JUPITER FROM EARTH, SEP OF IO-ECLIPSE-VIS-S2 EUROPA FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-S2 GANYMEDE FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-S2 CALLISTO FROM EARTH GT 10", ECL U FULL OF IO-ECLIPSE-VIS-S2 BY JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 0+/-20; In Jupiter Shadow, but not occulted Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 34] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 63 TARGET NAME: IO-ECLIPSE-VIS-NA-SCAN ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io in eclipse by Jupiter with STIS VIS spectral imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-ECLIPSE-VIS-NA-SCAN BY JUPITER FROM EARTH, SEP OF IO-ECLIPSE-VIS-NA-SCAN EUROPA FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-NA-SCAN GANYMEDE FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-NA-SCAN CALLISTO FROM EARTH GT 10", ECL U FULL OF IO-ECLIPSE-VIS-NA-SCAN BY JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 0+/-20; In Jupiter Shadow, but not occulted Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 35] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 64 TARGET NAME: IO-ECLIPSE-VIS-HALPHA ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io in eclipse by Jupiter with STIS VIS spectral imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-ECLIPSE-VIS-HALPHA BY JUPITER FROM EARTH, SEP OF IO-ECLIPSE-VIS-HALPHA EUROPA FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-HALPHA GANYMEDE FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-HALPHA CALLISTO FROM EARTH GT 10", ECL U FULL OF IO-ECLIPSE-VIS-HALPHA BY JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Target OLG window is determined based on: OLG 0+/-20; In Jupiter Shadow, but not occulted -1.769 day orbital period of Io -umbral eclipse begins at TBC +/-0.1 degrees OLG measured Ephemeris Center: EARTH from Sun in Aug 2024 - Sep 2024 Extended: YES -3000s exposure time available in the second orbit. -want to get all of Io in eclipse Override default SEP between Io and Jupiter to allow observation in/near eclipse ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 36] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 65 TARGET NAME: IO-ECLIPSE-VIS-K ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io in eclipse by Jupiter with STIS VIS spectral imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-ECLIPSE-VIS-K BY JUPITER FROM EARTH, SEP OF IO-ECLIPSE-VIS-K EUROPA FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-K GANYMEDE FROM EARTH GT 10", SEP OF IO-ECLIPSE-VIS-K CALLISTO FROM EARTH GT 10", ECL U FULL OF IO-ECLIPSE-VIS-K BY JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 0+/-20; In Jupiter Shadow, but not occulted Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 37] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 66 TARGET NAME: IO-ECLIPSE-INGRESS-COS-NUV ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io in eclipse by Jupiter with COS NUV spectroscopy ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-ECLIPSE-INGRESS-COS-NUV BY JUPITER FROM EARTH, SEP OF IO-ECLIPSE-INGRESS-COS-NUV EUROPA FROM EARTH GT 10", SEP OF IO-ECLIPSE-INGRESS-COS-NUV GANYMEDE FROM EARTH GT 10", SEP OF IO-ECLIPSE-INGRESS-COS-NUV CALLISTO FROM EARTH GT 10", ECL P FULL OF IO-ECLIPSE-INGRESS-COS-NUV BY JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 0+/-20; Entering Jupiter Shadow, not occulted Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 38] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 67 TARGET NAME: IO-ECLIPSE-EGRESS-COS-NUV ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io in eclipse by Jupiter with COS NUV spectroscopy ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-ECLIPSE-EGRESS-COS-NUV BY JUPITER FROM EARTH, SEP OF IO-ECLIPSE-EGRESS-COS-NUV EUROPA FROM EARTH GT 10", SEP OF IO-ECLIPSE-EGRESS-COS-NUV GANYMEDE FROM EARTH GT 10", SEP OF IO-ECLIPSE-EGRESS-COS-NUV CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 0+/-20; Exiting Jupiter Shadow, when not occulted Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 39] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 68 TARGET NAME: IO-ECLIPSE-STIS-NUV ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io in eclipse by Jupiter with STIS NUV spectral imaging ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-ECLIPSE-STIS-NUV BY JUPITER FROM EARTH, SEP OF IO-ECLIPSE-STIS-NUV EUROPA FROM EARTH GT 10", SEP OF IO-ECLIPSE-STIS-NUV GANYMEDE FROM EARTH GT 10", SEP OF IO-ECLIPSE-STIS-NUV CALLISTO FROM EARTH GT 10", ECL U FULL OF IO-ECLIPSE-STIS-NUV BY JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Is context for COS eclipse data OLG 0+/-20; In Jupiter Shadow, but not occulted (IO-ECLIPSE-INGRESS-COS-NUV and IO-ECLIPSE-INGRESS-COS-NUV) and should be linked in time Ephemeris Center: EARTH one Io orbit before/after Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 40] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 80 TARGET NAME: IO-SURFACE-STIS-VIS-LEADING ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE SATELLITE IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-SURFACE-STIS-VIS-LEADING BY JUPITER FROM EARTH, SEP OF IO-SURFACE-STIS-VIS-LEADING EUROPA FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-VIS-LEADING GANYMEDE FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-VIS-LEADING CALLISTO FROM EARTH GT 10", CML OF IO-SURFACE-STIS-VIS-LEADING FROM EARTH BETWEEN 75 105 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Was OLG 80 TO 100 but expanded to help with scheduling. OLG 75 TO 105; STIS with 52x0.05 slit scans at half-slit sampling Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 41] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 81 TARGET NAME: IO-SURFACE-STIS-VIS-TRAILING ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE SATELLITE IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-SURFACE-STIS-VIS-TRAILING BY JUPITER FROM EARTH, SEP OF IO-SURFACE-STIS-VIS-TRAILING EUROPA FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-VIS-TRAILING GANYMEDE FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-VIS-TRAILING CALLISTO FROM EARTH GT 10", CML OF IO-SURFACE-STIS-VIS-TRAILING FROM EARTH BETWEEN 255 285 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Was OLG 260 TO 280 but expanded to help with scheduling. OLG 255 TO 285; STIS with 52x0.05 slit scans at half-slit sampling Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 42] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 91 TARGET NAME: IO-SURFACE-STIS-VIS-TRAILING2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE SATELLITE IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-SURFACE-STIS-VIS-TRAILING2 BY JUPITER FROM EARTH, SEP OF IO-SURFACE-STIS-VIS-TRAILING2 EUROPA FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-VIS-TRAILING2 GANYMEDE FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-VIS-TRAILING2 CALLISTO FROM EARTH GT 10", CML OF IO-SURFACE-STIS-VIS-TRAILING FROM EARTH BETWEEN 255 285 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Was OLG 260 TO 280 but expanded to help with scheduling. OLG 255 TO 285; STIS with 52x0.05 slit scans at half-slit Copy of target 81 to be used with visit 91. sampling Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 43] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 82 TARGET NAME: IO-SURFACE-STIS-FUV-45 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io UV reflectance STIS G140L 52x0.2 step-scan image ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-SURFACE-STIS-FUV-45 BY JUPITER FROM EARTH, SEP OF IO-SURFACE-STIS-FUV-45 EUROPA FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-FUV-45 GANYMEDE FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-FUV-45 CALLISTO FROM EARTH GT 10", CML OF IO-SURFACE-STIS-FUV-45 FROM EARTH BETWEEN 30 63 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Was CML 45+/-10 but expanded to help with scheduling. CML 45+/-15; STIS with 52x0.2 slit scans Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 44] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 83 TARGET NAME: IO-SURFACE-STIS-FUV-135 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io UV reflectance STIS G140L 52x0.2 step-scan image ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-SURFACE-STIS-FUV-135 BY JUPITER FROM EARTH, SEP OF IO-SURFACE-STIS-FUV-135 EUROPA FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-FUV-135 GANYMEDE FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-FUV-135 CALLISTO FROM EARTH GT 10", CML OF IO-SURFACE-STIS-FUV-135 FROM EARTH BETWEEN 120 150 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Was CML 135+/-10 but expanded to help with scheduling. CML 135+/-15; STIS with 52x0.2 slit scans Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 45] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 84 TARGET NAME: IO-SURFACE-STIS-FUV-225 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io UV reflectance STIS G140L 52x0.2 step-scan image ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-SURFACE-STIS-FUV-225 BY JUPITER FROM EARTH, SEP OF IO-SURFACE-STIS-FUV-225 EUROPA FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-FUV-225 GANYMEDE FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-FUV-225 CALLISTO FROM EARTH GT 10", CML OF IO-SURFACE-STIS-FUV-225 FROM EARTH BETWEEN 210 240 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Was CML 225+/-10 but expanded to help with scheduling. CML 225+/-15; STIS with 52x0.2 slit scans Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 46] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 85 TARGET NAME: IO-SURFACE-STIS-FUV-315 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io UV reflectance STIS G140L 52x0.2 step-scan image ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-SURFACE-STIS-FUV-315 BY JUPITER FROM EARTH, SEP OF IO-SURFACE-STIS-FUV-315 EUROPA FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-FUV-315 GANYMEDE FROM EARTH GT 10", SEP OF IO-SURFACE-STIS-FUV-315 CALLISTO FROM EARTH GT 10", CML OF IO-SURFACE-STIS-FUV-315 FROM EARTH BETWEEN 300 330 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Was CML 315+/-10 but expanded to help with scheduling. CML 315+/-15; STIS with 52x0.2 slit scans Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 47] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 86 TARGET NAME: IO-SURFACE-COS-LEADING ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io EUV reflectance COS spectra ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-SURFACE-COS-LEADING BY JUPITER FROM EARTH, SEP OF IO-SURFACE-COS-LEADING EUROPA FROM EARTH GT 10", SEP OF IO-SURFACE-COS-LEADING GANYMEDE FROM EARTH GT 10", SEP OF IO-SURFACE-COS-LEADING CALLISTO FROM EARTH GT 10", OLG OF IO-SURFACE-COS-LEADING BETWEEN 45 135 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 45 TO 135; COS EUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 48] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 87 TARGET NAME: IO-SURFACE-COS-TRAILING ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io EUV reflectance COS spectra ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-SURFACE-COS-TRAILING BY JUPITER FROM EARTH, SEP OF IO-SURFACE-COS-TRAILING EUROPA FROM EARTH GT 10", SEP OF IO-SURFACE-COS-TRAILING GANYMEDE FROM EARTH GT 10", SEP OF IO-SURFACE-COS-TRAILING CALLISTO FROM EARTH GT 10", OLG OF IO-SURFACE-COS-TRAILING BETWEEN 225 315 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 OLG 225 TO 315; COS EUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 49] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 100 TARGET NAME: EUROPA-ACQ ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE For transit/eclipse observations where acquisition images of Io are not possible ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF EUROPA-ACQ BY JUPITER FROM EARTH, SEP OF EUROPA-ACQ IO FROM EARTH GT 50", SEP OF EUROPA-ACQ GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-ACQ CALLISTO FROM EARTH GT 10", NOT TRANSIT OF EUROPA-ACQ ACROSS JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.7 +/- 0.2 Could use Ganymede or Callisto instead If Jupiter max angular diam is ~48" during Cycle 31, and this acquisition is used for Io in eclipse/transit, need Ephemeris Center: EARTH Europa to be separated from Io by at least 24", but that Extended: YES puts it right on Jupiter limb, so I doubled that angular distance Added observing restriction of Europa transiting Jupiter as well ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 50] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 202 TARGET NAME: EUROPA-ACQ2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE For transit/eclipse observations where acquisition images of Io are not possible ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF EUROPA-ACQ2 BY JUPITER FROM EARTH, SEP OF EUROPA-ACQ2 IO FROM EARTH GT 50", SEP OF EUROPA-ACQ2 GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-ACQ2 CALLISTO FROM EARTH GT 10", NOT TRANSIT OF EUROPA-ACQ ACROSS JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.7 +/- 0.2 Could use Ganymede or Callisto instead If Jupiter max angular diam is ~48" during Cycle 31, and this acquisition is used for Io in eclipse/transit, need Ephemeris Center: EARTH Europa to be separated from Io by at least 24", but that Extended: YES puts it right on Jupiter limb, so I doubled that angular distance Added observing restriction of Europa transiting Jupiter as well Duplicate of target 100. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 51] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 206 TARGET NAME: EUROPA-ACQ3 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE For transit/eclipse observations where acquisition images of Io are not possible ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF EUROPA-ACQ3 BY JUPITER FROM EARTH, SEP OF EUROPA-ACQ3 IO FROM EARTH GT 50", SEP OF EUROPA-ACQ3 GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-ACQ3 CALLISTO FROM EARTH GT 10", NOT TRANSIT OF EUROPA-ACQ ACROSS JUPITER FROM EARTH ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.7 +/- 0.2 Could use Ganymede or Callisto instead If Jupiter max angular diam is ~48" during Cycle 31, and this acquisition is used for Io in eclipse/transit, need Ephemeris Center: EARTH Europa to be separated from Io by at least 24", but that Extended: YES puts it right on Jupiter limb, so I doubled that angular distance Added observing restriction of Europa transiting Jupiter as well Duplicate of target 199 & 202. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 52] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 203 TARGET NAME: IO-ACQ ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Io transiting Jupiter with COS NUV spectroscopy ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=IO ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF IO-ACQ BY JUPITER FROM EARTH, SEP OF IO-ACQ EUROPA FROM EARTH GT 10", SEP OF IO-ACQ GANYMEDE FROM EARTH GT 10", SEP OF IO-ACQ CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.1 Jupiter v-magnitude -2.4+/-0.4; OLG 180+/-5; STIS FUV Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 101 TARGET NAME: GANYMEDE-ACQ ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE For transit/eclipse observations where acquisition images of Io are not possible ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=GANYMEDE ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF GANYMEDE-ACQ BY JUPITER FROM EARTH, SEP OF GANYMEDE-ACQ IO FROM EARTH GT 10", SEP OF GANYMEDE-ACQ EUROPA FROM EARTH GT 10", SEP OF GANYMEDE-ACQ CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 4.8 +/- 0.2 Could use Europa or Callisto instead Ephemeris Center: EARTH Extended: YES 17470(101) - 31-Dec-2025 15:53:11 - [ 53] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 54] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 28 Point_Spacing 0.034 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 15 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 23 Point_Spacing 0.034 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 3 Point_Spacing 2.0 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: STIS offset by the 2" slit width for the near-Io neutral cloud scans. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 55] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose OTHER Number_Of_Points 6 Point_Spacing 5 Line_Spacing Coordinate_Frame CELESTIAL Pattern_Orient 0 Angle_Between_Sides Center_Pattern NO Pattern_Comments: COS offsets for the farthest-Io neutral cloud scans with custom pattern ~1 min * 2N each for 0pt (on Io), 5 RIo, 10 RIo, 20 RIo, and 40 RIo, and then dwell at 80 RIo for the remainder of an HST orbit (up to 20 min). Purpose is to identify furthest detectable emissions and understand distributions of escaping atmospheric gases. Directionality of the scan is best described in the Jupiter satellite orbital plane reference, or Ecliptic coordinates. A variable rate COS drift-scan would also achieve our goals, starting at higher angular rate than ending in a slew from 0 to 80 Io radii (roughly 80 arcsec) away.~1 min * 2N each for 0pt (on Io), 5 RIo, 10 RIo, 20 RIo, and 40 RIo, and then dwell at 80 RIo for the remainder of an HST orbit (up to 20 min). Two "LINE" entries, orthogonal to each other. 0 and 1, but -1 works fine too. We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 56] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 4 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose OTHER Number_Of_Points 6 Point_Spacing 5 Line_Spacing Coordinate_Frame CELESTIAL Pattern_Orient 1 Angle_Between_Sides Center_Pattern NO Pattern_Comments: COS offsets for the farthest-Io neutral cloud scans with custom pattern ~1 min * 2N each for 0pt (on Io), 5 RIo, 10 RIo, 20 RIo, and 40 RIo, and then dwell at 80 RIo for the remainder of an HST orbit (up to 20 min). Purpose is to identify furthest detectable emissions and understand distributions of escaping atmospheric gases. Directionality of the scan is best described in the Jupiter satellite orbital plane reference, or Ecliptic coordinates. A variable rate COS drift-scan would also achieve our goals, starting at higher angular rate than ending in a slew from 0 to 80 Io radii (roughly 80 arcsec) away.~1 min * 2N each for 0pt (on Io), 5 RIo, 10 RIo, 20 RIo, and 40 RIo, and then dwell at 80 RIo for the remainder of an HST orbit (up to 20 min). Two "LINE" entries, orthogonal to each other. 0 and 1, but -1 works fine too. We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 5 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 4 Point_Spacing 0.1 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: This pattern can begin offset from the target, or can begin on the target. The Target Position Requirements indicate how far (perpendicular to the slit) from the center of the target the slit pointing pattern should begin. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 57] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 6 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 5 Point_Spacing 0.2 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: For STIS NUV transit scan with central wavelength 2659. We'll aim for less spatial resolution than with pattern 5 and more coverage of the disk instead with five 0.2 arcsec steps instead of 4 at 0.1. The signal from Jupiter at this wavelength is likely too high with the 0.5" slit, so we need to use a narrower slit and more steps. Kurt reply: Using the G230M mode decreases throughput by increasing dispersion, so if you compared the flux from the G230L and 52x0.2 slit to infer this, then the x2 drop in throughput with M vs L should help account for that. Best to check with ETC, agree, and using a Jupiter spectrum not a solar analog. ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 7 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 3 Point_Spacing 0.5 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: STIS offset by the 0.5" slit width for the near-Io plasma torus scans. Three steps covers 1.5 arcsec and almost all of near-Io features with less gap-time lost. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 58] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 8 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose OTHER Number_Of_Points 3 Point_Spacing 5 Line_Spacing Coordinate_Frame CELESTIAL Pattern_Orient 0 Angle_Between_Sides Center_Pattern NO Pattern_Comments: COS offsets for the near-Europa cloud scans with custom pattern ~10 min * 2N each for 0pt (on Europa), 5 arcsec (COS aperture size), and 10 arcsec. Purpose is to identify furthest detectable emissions in Hill sphere radius and understand distributions of escaping atmospheric gases. Directionality of the scan is best described in the Jupiter satellite orbital plane reference, or Ecliptic coordinates. A constant rate COS drift-scan would also achieve our goals. Two "LINE" entries, orthogonal to each other. 0 and 1, but -1 works fine too. We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 9 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose OTHER Number_Of_Points 3 Point_Spacing 5 Line_Spacing Coordinate_Frame CELESTIAL Pattern_Orient 1 Angle_Between_Sides Center_Pattern NO Pattern_Comments: COS offsets for the near-Europa cloud scans with custom pattern ~10 min * 2N each for 0pt (on Eruopa), 5 arcsec (COS aperture size), and 10 arcsec. Purpose is to identify furthest detectable emissions in Hill sphere radius and understand distributions of escaping atmospheric gases. Directionality of the scan is best described in the Jupiter satellite orbital plane reference, or Ecliptic coordinates. A constant rate COS drift-scan would also achieve our goals. Two "LINE" entries, orthogonal to each other. 0 and 1, but -1 works fine too. We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 59] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 10 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 3 Point_Spacing 0.1 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 11 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.135 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO Pattern_Comments: Need to update angles with NPPA once scheduled. ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 12 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose MOSAIC Number_Of_Points 2 Point_Spacing 3 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 1 Angle_Between_Sides Center_Pattern NO Pattern_Comments: For the COS-NUV Transit on-Jupiter measurements, searching for extended SO2 north (or south) of Io within the Hill sphere. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 60] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 13 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose BACKGROUND Number_Of_Points 2 Point_Spacing 10 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0 Angle_Between_Sides Center_Pattern NO Pattern_Comments: For the COS-NUV Transit on-Jupiter background measurements. Needs to be East of Io, covering where the Io exposure had previously been. ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 14 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 5 Point_Spacing 0.1 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern YES Pattern_Comments: This pattern can begin offset from the target, or can begin on the target. The Target Position Requirements indicate how far (perpendicular to the slit) from the center of the target the slit pointing pattern should begin. For IO-SURFACE-STIS-FUV to catch other half of disk in 2nd orbit, where first orbit uses pattern 5 with four step sub-exposures. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 61] Visit: 01 (Io Neutral Cloud Sub-Jupiter) Visit Requirements: SCHED 100%; BETWEEN 04-NOV-2024:19:28:00 AND 04-NOV-2024:20:25:00; GROUP 01, 1A WITHIN 8.1 Orbits; VISIBILITY INTERVAL 40.6 M On Hold Comments: Additional Comments: Scans are implemented using POS TARG positions with X = [0", 2.5", 5", 10", 20", 40"] and Y = 0" for the second orbit, and of X = 0" and Y = [0", 2.4", 5", 10", 20", 40"] for the first orbit. (One arcsecond is roughly two R_Io) We can change the signs of the x or y as needed to help scheduling (e.g., avoiding Jupiter in sub- and anti- cases). Since the POS TARG offsets occur in HST coordinates rather than ecliptic or Jupiter satellite plane coordinates, the orientat and NPPA of the spacecraft will naturally vary for all the different sets. That'll be ok, and precludes us from specifying negative offest values. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-S COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) UBJUPITER RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147 ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 62] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-S COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 180 S POS TARG 0, 0; SEQ 2-4 UBJUPITER G SEGMENT=BOTH see below NON-INT (180 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 63] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-S COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 359 S POS TARG 0, 5 UBJUPITER G SEGMENT=BOTH see below (312 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 64] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-NCLOUD-S COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 600 S POS TARG 0, 15 UBJUPITER G SEGMENT=BOTH see below (540 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 65] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-NCLOUD-S COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 191 S POS TARG 0, 0; SEQ 5-7 UBJUPITER G SEGMENT=BOTH see below NON-INT (180 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 66] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-NCLOUD-S COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 700 S POS TARG 10, 0 UBJUPITER G SEGMENT=BOTH see below (624 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 67] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-NCLOUD-S COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 900 S POS TARG 20, 0 UBJUPITER G SEGMENT=BOTH see below (800 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-SUBJUPITE 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A R RCH IO-NCLOUD-SUBJUPITE 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 180.0 S R G IO-NCLOUD-SUBJUPITE 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 312.0 S R G IO-NCLOUD-SUBJUPITE 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 540.0 S R G 17470(101) - 31-Dec-2025 15:53:11 - [ 68] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-SUBJUPITE 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 180.0 S R G IO-NCLOUD-SUBJUPITE 6 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 624.0 S R G IO-NCLOUD-SUBJUPITE 7 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 800.0 S R G 17470(101) - 31-Dec-2025 15:53:11 - [ 69] Visit: 02 (Io Neutral Cloud Leading) Visit Requirements: SCHED 100%; BEFORE 07-MAR-2024:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-L COS/NUV ACQ/SEA BOA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) GS ACQ SCENARIO BASE1BR EADING RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 60 S (60 POS TARG 0, 0; SEQ 2-7 EADING G SEGMENT=BOTH S) NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 70] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 68 S (68 POS TARG 0, 2.5 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 71] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 77 S (77 POS TARG 0, 5 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 72] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 98 S (98 POS TARG 0, 10 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 73] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 163 S (163 POS TARG 0, 20 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 74] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 306 S (306 POS TARG 0, 40 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 8 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 90 S (90 POS TARG 0, 0; SEQ 8-13 EADING G SEGMENT=BOTH S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 9 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 102 S (102 POS TARG 2.5, 0 EADING G SEGMENT=BOTH S) ------------------------------------------------------------------------------------------------------------------------------------ 10 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 115 S (115 POS TARG 5, 0 EADING G SEGMENT=BOTH S) ------------------------------------------------------------------------------------------------------------------------------------ 11 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 148 S (148 POS TARG 10, 0 EADING G SEGMENT=BOTH S) ------------------------------------------------------------------------------------------------------------------------------------ 12 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 244 S (244 POS TARG 20, 0 EADING G SEGMENT=BOTH S) ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 75] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 13 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 795 S (795 POS TARG 40, 0 EADING G SEGMENT=BOTH S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-LEADING 1 COS/NUV ACQ/SEA BOA G230L 3000 none none none none 1 N/A RCH IO-NCLOUD-LEADING 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 6 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 7 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 8 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING 9 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING 10 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING 11 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING 12 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING 13 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 17470(101) - 31-Dec-2025 15:53:11 - [ 76] Visit: 03 (Io Neutral Cloud Anti-Jupiter) Visit Requirements: SCHED 100%; BETWEEN 05-NOV-2024:09:35:00 AND 05-NOV-2024:10:35:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-A COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) NTIJUPITER RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-A COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 60 S POS TARG 0, 0; SEQ 2-4 NTIJUPITER G SEGMENT=BOTH see below NON-INT (180 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 77] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-A COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 68 S POS TARG 0, 5 NTIJUPITER G SEGMENT=BOTH see below (359 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 78] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-NCLOUD-A COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 77 S POS TARG 0, 15 NTIJUPITER G SEGMENT=BOTH see below (600 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-NCLOUD-A COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 90 S POS TARG 0, 0; SEQ 5-7 NTIJUPITER G SEGMENT=BOTH see below NON-INT (180 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-NCLOUD-A COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 102 S POS TARG 10, 0 NTIJUPITER G SEGMENT=BOTH see below (700 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-NCLOUD-A COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 115 S POS TARG 20, 0 NTIJUPITER G SEGMENT=BOTH see below (911 S) ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 79] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-ANTIJUPIT 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A ER RCH IO-NCLOUD-ANTIJUPIT 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 180 S ER G IO-NCLOUD-ANTIJUPIT 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 359.0 S ER G IO-NCLOUD-ANTIJUPIT 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 600.0 S ER G IO-NCLOUD-ANTIJUPIT 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 180 S ER G IO-NCLOUD-ANTIJUPIT 6 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 700 S ER G IO-NCLOUD-ANTIJUPIT 7 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 911.0 S ER G 17470(101) - 31-Dec-2025 15:53:11 - [ 80] Visit: 04 (Io Neutral Cloud Trailing) Visit Requirements: SCHED 100%; BETWEEN 2025.328:22:32:00 AND 2025.328:23:30:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-T COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) RAILING RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 60 S POS TARG 0, 0; SEQ 2-4 RAILING G SEGMENT=BOTH see below NON-INT (180 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 81] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 68 S POS TARG 0, 5 RAILING G SEGMENT=BOTH see below (359 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 82] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 77 S POS TARG 0, 15 RAILING G SEGMENT=BOTH see below (600 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 90 S POS TARG 0, 0; SEQ 5-7 RAILING G SEGMENT=BOTH see below NON-INT (180 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 102 S POS TARG 10, 0 RAILING G SEGMENT=BOTH see below (700 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 115 S POS TARG 20, 0 RAILING G SEGMENT=BOTH see below (911 S) ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 83] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-TRAILING 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A RCH IO-NCLOUD-TRAILING 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 180.0 S G IO-NCLOUD-TRAILING 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 359 S G IO-NCLOUD-TRAILING 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 600 S G IO-NCLOUD-TRAILING 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 180 S G IO-NCLOUD-TRAILING 6 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 700 S G IO-NCLOUD-TRAILING 7 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 911 S G 17470(101) - 31-Dec-2025 15:53:11 - [ 84] Visit: 05 (Io Neutral Cloud Leading 2) Visit Requirements: SCHED 100%; BETWEEN 2025.329:22:04:00 AND 2025.329:23:04:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-L COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) EADING2 RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 180 S (180 POS TARG 0, 0; SEQ 2-4 EADING2 G SEGMENT=BOTH S) NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 85] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 359 S (359 POS TARG 0, 5 EADING2 G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 86] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 600 S (600 POS TARG 0, 15 EADING2 G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 180 S (180 POS TARG 0, 0; SEQ 5-7 EADING2 G SEGMENT=BOTH S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 700 S (700 POS TARG 10, 0 EADING2 G SEGMENT=BOTH S) ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 911 S (911 POS TARG 20, 0 EADING2 G SEGMENT=BOTH S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 87] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-LEADING2 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A RCH IO-NCLOUD-LEADING2 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING2 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING2 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING2 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING2 6 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING2 7 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 17470(101) - 31-Dec-2025 15:53:11 - [ 88] Visit: 06 (Io Neutral Cloud Trailing 2) Visit Requirements: SCHED 100%; BETWEEN 2025.336:02:12:00 AND 2025.336:03:12:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-T COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) RAILING RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 60 S POS TARG 0, 0; SEQ 2-4 RAILING G SEGMENT=BOTH see below NON-INT (180 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 89] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 68 S POS TARG 0, 5 RAILING G SEGMENT=BOTH see below (359 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 90] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 77 S POS TARG 0, 15 RAILING G SEGMENT=BOTH see below (600 S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 180 S (180 POS TARG 0, 0; SEQ 5-7 RAILING G SEGMENT=BOTH S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 700 S (700 POS TARG 10, 0 RAILING G SEGMENT=BOTH S) ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-NCLOUD-T COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 911 S (911 POS TARG 20, 0 RAILING G SEGMENT=BOTH S) ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [ 91] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-TRAILING 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A RCH IO-NCLOUD-TRAILING 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 180.0 S G IO-NCLOUD-TRAILING 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 359.0 S G IO-NCLOUD-TRAILING 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 600.0 S G IO-NCLOUD-TRAILING 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-TRAILING 6 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-TRAILING 7 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 17470(101) - 31-Dec-2025 15:53:11 - [ 92] Visit: 07 (Io Plasma Leading) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-PLASMATO STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 SEQ 1-2 NON-INT RUS-LEADING DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2023-12-31), Io's diameter is 1.125 arcesc. Thus the checkbox is set to 1.125/0.05 = 25 pixels here. To be modified as the timing is determined. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-PLASMATO STIS/FUV TIME-TA 52X0.5 G140M 1272 BUFFER-TIME=750 1 430 S PATTERN 7 2 RUS-LEADING -MAMA G (1290 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-PLASMATO STIS/FUV TIME-TA 52X0.5 G140M 1272 BUFFER-TIME=750 1 610 S SEQ 3 NON-INT; PATTERN 7 RUS-LEADING -MAMA G (1830 S) 3 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-PLASMATORUS-LEAD 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A ING IO-PLASMATORUS-LEAD 2 STIS/FUV TIME-TA 52X0.5 G140M 1272 1 none none none 1 N/A ING -MAMA G IO-PLASMATORUS-LEAD 2 STIS/FUV TIME-TA 52X0.5 G140M 1272 2 none none none 1 N/A ING -MAMA G IO-PLASMATORUS-LEAD 2 STIS/FUV TIME-TA 52X0.5 G140M 1272 3 none none none 1 N/A ING -MAMA G IO-PLASMATORUS-LEAD 3 STIS/FUV TIME-TA 52X0.5 G140M 1272 1 none none none 2 N/A ING -MAMA G IO-PLASMATORUS-LEAD 3 STIS/FUV TIME-TA 52X0.5 G140M 1272 2 none none none 2 N/A ING -MAMA G IO-PLASMATORUS-LEAD 3 STIS/FUV TIME-TA 52X0.5 G140M 1272 3 none none none 2 N/A ING -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [ 93] Visit: 08 (Io PlasmaTrailing) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-PLASMATO STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 SEQ 1-2 NON-INT RUS-TRAILIN DIFFUSE-CENTER=GEOMETRIC-CENTE S) G R Comments: At the time of PJ57 (2023-12-31), Io's diameter is 1.125 arcesc. Thus the checkbox is set to 1.125/0.05 = 25 pixels here. To be modified as the timing is determined. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-PLASMATO STIS/FUV TIME-TA 52X0.5 G140M 1272 BUFFER-TIME=750 1 430 S PATTERN 7 2 RUS-TRAILIN -MAMA G (1290 S) G ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-PLASMATO STIS/FUV TIME-TA 52X0.5 G140M 1272 BUFFER-TIME=750 1 610 S SEQ 3 NON-INT; PATTERN 7 RUS-TRAILIN -MAMA G (1830 S) 3 G ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-PLASMATORUS-TRAI 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A LING IO-PLASMATORUS-TRAI 2 STIS/FUV TIME-TA 52X0.5 G140M 1272 1 none none none 1 N/A LING -MAMA G IO-PLASMATORUS-TRAI 2 STIS/FUV TIME-TA 52X0.5 G140M 1272 2 none none none 1 N/A LING -MAMA G IO-PLASMATORUS-TRAI 2 STIS/FUV TIME-TA 52X0.5 G140M 1272 3 none none none 1 N/A LING -MAMA G IO-PLASMATORUS-TRAI 3 STIS/FUV TIME-TA 52X0.5 G140M 1272 1 none none none 2 N/A LING -MAMA G IO-PLASMATORUS-TRAI 3 STIS/FUV TIME-TA 52X0.5 G140M 1272 2 none none none 2 N/A LING -MAMA G IO-PLASMATORUS-TRAI 3 STIS/FUV TIME-TA 52X0.5 G140M 1272 3 none none none 2 N/A LING -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [ 94] Visit: 09 (IO_NCLOUD_EAST_COS-1) Visit Requirements: SCHED 100%; BETWEEN 2025.334:10:00:00 AND 2025.334:11:30:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NCLOUD-EAST COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 1980 S ANSA G SEGMENT=BOTH (1980 S) Comments: Io's orbital distance from Jupiter is 422, 000 km. For example, offset from Callisto on Nov. 30, 2025 at 12:00. With Io's 1.7 day orbit we have a good window to try the opposite side, ------------------------------------------------------------------------------------------------------------------------------------ 2 NCLOUD-EAST COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=1000, 1 2050 S ANSA G SEGMENT=BOTH (2050 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NCLOUD-EASTANSA 1 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G NCLOUD-EASTANSA 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 17470(101) - 31-Dec-2025 15:53:11 - [ 95] Visit: 10 (IO_NCLOUD_EAST_COS-2) Visit Requirements: SCHED 100%; AFTER 02-AUG-2024:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NCLOUD-EAST COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 2100 S ANSA G SEGMENT=BOTH (2100 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NCLOUD-EAST COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=1000, 1 2000 S ANSA G SEGMENT=BOTH see below (2085 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NCLOUD-EASTANSA 1 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G NCLOUD-EASTANSA 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2085.0 S G 17470(101) - 31-Dec-2025 15:53:11 - [ 96] Visit: 11 (IO_NCLOUD_WEST_COS-1) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NCLOUD-WEST COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 2000 S ANSA G SEGMENT=BOTH see below (2037 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NCLOUD-WEST COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=1000, 1 2000 S ANSA G SEGMENT=BOTH see below (2085 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NCLOUD-WESTANSA 1 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 2037.0 S G NCLOUD-WESTANSA 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2085.0 S G 17470(101) - 31-Dec-2025 15:53:11 - [ 97] Visit: 12 (IO_NCLOUD_WEST_COS-2) Visit Requirements: SCHED 100%; AFTER 02-AUG-2024:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NCLOUD-WEST COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 2000 S ANSA G SEGMENT=BOTH see below (2037 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NCLOUD-WEST COS/FUV TIME-TA PSA G130M 1291 FP-POS=4, BUFFER-TIME=1000, 1 2000 S ANSA G SEGMENT=BOTH see below (2085 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NCLOUD-WESTANSA 1 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 2037.0 S G NCLOUD-WESTANSA 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2085.0 S G 17470(101) - 31-Dec-2025 15:53:11 - [ 98] Visit: 17 (Io COS NUV Trailing Stare) Visit Requirements: SCHED 100%; BETWEEN 21-DEC-2023:06:00:00 AND 21-DEC-2023:13:30:00 On Hold Comments: Additional Comments: Search for Mg at and around Io, NUV reflectance spectra Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-T COS/NUV ACQ/SEA BOA G230L 2950 SCAN-SIZE=3, 1 1 S (1 S) GS ACQ SCENARIO BASE1BR RAILING-NUV RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-T COS/NUV TIME-TA PSA G230L 2950 FP-POS=2, BUFFER-TIME=1000, 1 300 S RAILING-NUV G EXTENDED=YES see below (1835 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-T COS/NUV TIME-TA PSA G230L 2950 FP-POS=2, BUFFER-TIME=1000, 1 2486 S RAILING-NUV G EXTENDED=YES (2486 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-TRAILING- 1 COS/NUV ACQ/SEA BOA G230L 2950 none none none none 1 N/A NUV RCH IO-NCLOUD-TRAILING- 2 COS/NUV TIME-TA PSA G230L 2950 none none none none 1 1835.0 S NUV G IO-NCLOUD-TRAILING- 3 COS/NUV TIME-TA PSA G230L 2950 none none none none 2 N/A NUV G 17470(101) - 31-Dec-2025 15:53:11 - [ 99] Visit: 18 (Europa Neutral Cloud Leading) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: These Europa COS and STIS visits with 4 orbits can be split into 2 visits with 2 orbits each instrument if it helps scheduling or reduces risk of gyro problems. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-NCLO COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) UD-EASTANSA RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 307 S (307 POS TARG 0, 0; SEQ 2-4 EADING G SEGMENT=BOTH S) NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [100] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 307 S (307 POS TARG 0, 2.5 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [101] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 307 S (307 POS TARG 0, 5 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [102] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 594 S (594 POS TARG 0, 0; SEQ 5-7 EADING G SEGMENT=BOTH S) NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [103] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 594 S (594 POS TARG 2.5, 0 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [104] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 594 S (594 POS TARG 5, 0 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 8 EUROPA-NCLO STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1719 S POS TARG null, -5.0 UD-EASTANSA -MAMA G (1719 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 EUROPA-NCLO STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2136 S POS TARG null, -5.0 UD-EASTANSA -MAMA G (2136 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-NCLOUD-EASTA 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A NSA RCH 17470(101) - 31-Dec-2025 15:53:11 - [105] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-LEADING 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING 6 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING 7 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G EUROPA-NCLOUD-EASTA 8 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 3 N/A NSA -MAMA G EUROPA-NCLOUD-EASTA 9 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 4 N/A NSA -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [106] Visit: 19 (Europa Neutral Cloud Trailing) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: These Europa COS and STIS visits with 4 orbits can be split into 2 visits with 2 orbits each instrument if it helps scheduling or reduces risk of gyro problems. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-NCLO COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) UD-WESTANSA RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 307 S (307 POS TARG 0, 0; SEQ 2-4 EADING G SEGMENT=BOTH S) NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [107] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 307 S (307 POS TARG 0, 2.5 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [108] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 307 S (307 POS TARG 0, 5 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [109] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 594 S (594 POS TARG 0, 0; SEQ 5-7 EADING G SEGMENT=BOTH S) NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [110] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 594 S (594 POS TARG 2.5, 0 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [111] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-NCLOUD-L COS/FUV TIME-TA PSA G130M 1291 FP-POS=3, BUFFER-TIME=1000, 1 594 S (594 POS TARG 5, 0 EADING G SEGMENT=BOTH S) Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. Notes from ProjID=11539: ETC: COS78468 Used 3 strongest lines in this waveband (excluding Lyman alpha) from HST/FOS measurements by Clarke et al 1994, JGR 99., along with high airglow. Gives buffer time of 2/3 of 2919. We decrease this to 800s to allow for continuum or scatter. The grating setting is chosen to detect the Io emission lines at 1256, 1304, 1356, 1389, and 1429 A. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. HOWEVER we should choose the best single FP-POS value, to avoid (if possible) putting emission lines of interest on known problem areas of the detector. ProjID 15848 and others use the c1291 instead of c1327 which has restrictions on lifetime position due to gain sag, and I Carl recalls that we couldn't use it under the COS 2025 restrictions. ------------------------------------------------------------------------------------------------------------------------------------ 8 EUROPA-NCLO STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1719 S POS TARG null, -5.0 UD-WESTANSA -MAMA G (1719 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 EUROPA-NCLO STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2136 S POS TARG null, -5.0 UD-WESTANSA -MAMA G (2136 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-NCLOUD-WESTA 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A NSA RCH 17470(101) - 31-Dec-2025 15:53:11 - [112] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-LEADING 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G IO-NCLOUD-LEADING 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING 6 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G IO-NCLOUD-LEADING 7 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G EUROPA-NCLOUD-WESTA 8 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 3 N/A NSA -MAMA G EUROPA-NCLOUD-WESTA 9 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 4 N/A NSA -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [113] Visit: 1A (Io Neutral Cloud Sub-Jupiter) Visit Requirements: SCHED 100%; BETWEEN 04-NOV-2024:13:05:00 AND 04-NOV-2024:14:05:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-S STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 UBJUPITER DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2023-12-31), Io's diameter is 1.125 arcesc. Thus the checkbox is set to 1.125/0.05 = 25 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-S STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1416 S POS TARG null, -5.0; SEQ UBJUPITER -MAMA G (1416 S) 2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-S STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2136 S POS TARG null, -5.0; SEQ UBJUPITER -MAMA G (2136 S) 3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-SUBJUPITE 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A R IO-NCLOUD-SUBJUPITE 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 N/A R -MAMA G IO-NCLOUD-SUBJUPITE 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 N/A R -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [114] Visit: 20 (STIS-FUVAURORA-PJ57a) Visit Requirements: SCHED 100%; BETWEEN 31-JAN-2024:06:20:00 AND 31-JAN-2024:07:20:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2023-12-30 (08:35 UTC Juno time) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=23, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 GS ACQ SCENARIO BASE1BR J57 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2023-12-31), Io's diameter is 1.125 arcesc. Thus the checkbox is set to 1.13/0.05 = 23 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J57 -MAMA G see below (1413 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J57 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J57 -MAMA G see below (2084 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ57 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ57 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1413.0 S -MAMA G IO-AURORA-PJ57 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G IO-AURORA-PJ57 4 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 3 2084.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [115] Visit: 21 (STIS-FUVAURORA-PJ57b) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2023-12-30 (08:35 UTC Juno time); Let's reschedule for PJ64 proximity in Aug 20 (24.233) 22:52 to Aug 21 (24.234) 01:13 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=23, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 J57 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2023-12-31), Io's diameter is 1.125 arcesc. Thus the checkbox is set to 1.13/0.05 = 23 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J57 -MAMA G see below (1413 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J57 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J57 -MAMA G see below (2084 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ57 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ57 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1413.0 S -MAMA G IO-AURORA-PJ57 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G IO-AURORA-PJ57 4 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 3 2084.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [116] Visit: 22 (STIS-FUVAURORA-UVS-PJ67) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to a time when Juno-UVS observes Io around PJ67 (starting around 2024-11-24 13:05) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-U STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=23, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 VS1 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: November 2nd, 2025 Io is 20.8 pixels diameter. So checkbox 23. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-U STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 VS1 -MAMA G see below (1416 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-U STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 VS1 -MAMA G see below (2136 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-UVS1 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-UVS1 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1416.0 S -MAMA G IO-AURORA-UVS1 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2136.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [117] Visit: 23 (STIS-FUVAURORA-PJ58a) Visit Requirements: SCHED 100%; BETWEEN 01-FEB-2024:06:00:00 AND 01-FEB-2024:07:00:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2024-02-03 (17:48 UTC Juno time) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=21, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 GS ACQ SCENARIO BASE1BR J58 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2024-02-03), Io's diameter is 1.005 arcesc. Thus the checkbox is set to 1.005/0.05 = 21 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J58 -MAMA G see below (1453 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J58 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J58 -MAMA G see below (2084 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ58 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ58 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1453.0 S -MAMA G IO-AURORA-PJ58 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G IO-AURORA-PJ58 4 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 3 2084.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [118] Visit: 24 (STIS-FUVAURORA-PJ58b) Visit Requirements: SCHED 100%; BETWEEN 01-FEB-2024:10:00:00 AND 04-FEB-2024:00:00:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2024-02-03 (17:48 UTC Juno time) Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=21, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 GS ACQ SCENARIO BASE1BR J58 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2024-02-03), Io's diameter is 1.005 arcesc. Thus the checkbox is set to 1.005/0.05 = 21 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J58 -MAMA G see below (1453 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J58 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J58 -MAMA G see below (2084 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ58 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ58 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1453.0 S -MAMA G IO-AURORA-PJ58 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G IO-AURORA-PJ58 4 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 3 2084.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [119] Visit: 25 (STIS-FUVAURORA-PJ59a) Visit Requirements: SCHED 100%; BETWEEN 04-MAR-2024:00:00:00 AND 10-MAR-2024:00:00:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2024-03-07 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=19, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 GS ACQ SCENARIO BASE1BR J59 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ59 (2024-03-07), Io's diameter is 0.91 arcesc. Thus the checkbox is set to 0.91/0.05 <= 19 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J59 -MAMA G see below (1469 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J59 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ59 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ59 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1469.0 S -MAMA G IO-AURORA-PJ59 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [120] Visit: 26 (STIS-FUVAURORA-PJ59b) Visit Requirements: SCHED 100%; BETWEEN 04-MAR-2024:00:00:00 AND 10-MAR-2024:00:00:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2024-03-07 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=19, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 GS ACQ SCENARIO BASE1BR J59 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ59 (2024-03-07), Io's diameter is 0.91 arcesc. Thus the checkbox is set to 0.91/0.05 <= 19 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J59 -MAMA G see below (1469 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J59 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ59 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ59 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1469.0 S -MAMA G IO-AURORA-PJ59 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [121] Visit: 27 (STIS-FUVAURORA-UVS2) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: This visit is to be scheduled when Io is emerging from eclipse, and as close in time as possible to PJ66 (2024-10-22); I'll rethink this with Lorenz. If no HST availability post opposition on Dec. 7 we might need to push this till next availability window or rethink the egress plan and do an ingress instead. No longer calling this an EGRESS attempt. Given gyro constraints. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-U STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=23, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 VS2-ECLIPSE DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ59 (2024-03-07), Io's diameter is 0.91 arcesc. Thus the checkbox is set to 0.91/0.05 <= 19 pixels here. At the time of UVS2 (2024-09-30), Io's diameter is 1.077 arcesc. Thus the checkbox is set to 1.077/0.05 = 21.5 pixels < 23 here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-U STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 VS2-ECLIPSE -MAMA G see below (1469 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-U STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 VS2-ECLIPSE -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-UVS2-ECLI 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A PSE IO-AURORA-UVS2-ECLI 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1469.0 S PSE -MAMA G IO-AURORA-UVS2-ECLI 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S PSE -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [122] Visit: 28 (STIS-FUVAURORA-PJ64a) Visit Requirements: SCHED 100%; BETWEEN 17-AUG-2024:00:00:00 AND 20-AUG-2024:00:00:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2024-08-18 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=19, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 J64 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2024-08-18), Io's diameter is 0.93 arcesc. Thus the checkbox is set to 0.93/0.05 <= 19 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J64 -MAMA G see below (1469 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J64 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ64 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ64 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1469.0 S -MAMA G IO-AURORA-PJ64 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [123] Visit: 29 (STIS-FUVAURORA-PJ64b) Visit Requirements: SCHED 100%; BETWEEN 17-AUG-2024:00:00:00 AND 20-AUG-2024:00:00:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2024-08-18 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=19, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 J64 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2024-08-18), Io's diameter is 0.93 arcesc. Thus the checkbox is set to 0.93/0.05 <= 19 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J64 -MAMA G see below (1469 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J64 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ64 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ64 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1469.0 S -MAMA G IO-AURORA-PJ64 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [124] Visit: 2A (Io Neutral Cloud Leading) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Updated to remove step pattern in orbit 1, owing to lack of exposure times following TA Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-L STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=23, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 GS ACQ SCENARIO BASE1BR EADING DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2023-12-31), Io's diameter is 1.125 arcesc. Thus the checkbox is set to 1.125/0.05 = 25 pixels here. On Feb. 24-25, 2024 Io's diameter is 0.95 arcsec. Thus the checkbox is set to 0.95/0.05 = 23 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-L STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1373 S SEQ 2 NON-INT EADING -MAMA G (1373 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-L STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 490 S SEQ 3 NON-INT; PATTERN 2 EADING -MAMA G (1470 S) 3 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-LEADING 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-NCLOUD-LEADING 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 N/A -MAMA G IO-NCLOUD-LEADING 3 STIS/FUV TIME-TA 52X2 G140L 1425 1 none none none 2 N/A -MAMA G IO-NCLOUD-LEADING 3 STIS/FUV TIME-TA 52X2 G140L 1425 2 none none none 2 N/A -MAMA G IO-NCLOUD-LEADING 3 STIS/FUV TIME-TA 52X2 G140L 1425 3 none none none 2 N/A -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [125] Visit: 30 (STIS-FUVAURORA-UVS3) Visit Requirements: SCHED 100%; BETWEEN 19-SEP-2024:11:15:00 AND 19-SEP-2024:12:10:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to a time when Juno-UVS observes Io associated with PJ65 starting at 2024-09-20 02:29 and lasting 20-30 minutes. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-U STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=21, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 VS3 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ59 (2024-03-07), Io's diameter is 0.91 arcesc. Thus the checkbox is set to 0.91/0.05 <= 19 pixels here. sep. 19 angular diameter is 1.04 arcsec, with 20.8 pixels. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-U STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1456 S POS TARG 0.0, -5.0 VS3 -MAMA G (1456 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-U STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2136 S POS TARG 0.0, -5.0 VS3 -MAMA G (2136 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-UVS3 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-UVS3 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 N/A -MAMA G IO-AURORA-UVS3 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 N/A -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [126] Visit: 31 (STIS-FUVAURORA-PJ66a) Visit Requirements: SCHED 100%; BETWEEN 21-OCT-2024:00:00:00 AND 24-OCT-2024:00:00:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with closest approach on 2024-10-22 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 J66 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2024-08-18), Io's diameter is 1.04 arcesc. Thus the checkbox is set to 1.04/0.05 <= 21 pixels here. october 24th is 23.1 pixels so use 25 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J66 -MAMA G see below (1453 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J66 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J66 -MAMA G see below (2084 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ66 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ66 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1453.0 S -MAMA G IO-AURORA-PJ66 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G IO-AURORA-PJ66 4 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 3 2084.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [127] Visit: 32 (STIS-FUVAURORA-PJ66b) Visit Requirements: SCHED 100%; BETWEEN 21-OCT-2024:08:00:00 AND 24-OCT-2024:22:00:00 On Hold Comments: Additional Comments: This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with closest approach on 2024-10-22 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 J66 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Before Sept. 21 Io checkbox 21. Before Oct. 21 Io checkbox 23. After, 25. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J66 -MAMA G see below (1453 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J66 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J66 -MAMA G see below (2084 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ66 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ66 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1453.0 S -MAMA G IO-AURORA-PJ66 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G IO-AURORA-PJ66 4 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 3 2084.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [128] Visit: 3A (Io Neutral Cloud Anti-Jupiter) Visit Requirements: SCHED 100%; BETWEEN 05-NOV-2024:15:55:00 AND 05-NOV-2024:16:55:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-A STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 NTIJUPITER DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2023-12-31), Io's diameter is 1.125 arcesc. Thus the checkbox is set to 1.125/0.05 = 25 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-A STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1416 S POS TARG null, -5.0; SEQ NTIJUPITER -MAMA G (1416 S) 2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-A STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2136 S POS TARG null, -5.0; SEQ NTIJUPITER -MAMA G (2136 S) 3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-ANTIJUPIT 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A ER IO-NCLOUD-ANTIJUPIT 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 N/A ER -MAMA G IO-NCLOUD-ANTIJUPIT 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 N/A ER -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [129] Visit: 40 (IO-TRANSIT-FUV-1) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: STIS FUV imaging of the plumes on the limb of Io while transiting Jupiter Visit 1 With Io|*|s 1.7 day orbital period roughly 60 (35) transit events are available early (late) in Cy31 (similarly but less so for eclipse events), with one and sometimes two HST orbits possible in each event. We search for plume gas variability in 4 events using STIS MAMA F25QTZ FUV imaging using the dither method implemented previously for Europa to obtain ~30 km/pix resolution elements with 1-orbit per event. Two additional orbits using the same longpass (>150 nm) F25QTZ filter would assess any faint auroral emission or disk reflectance PSF systematic features. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-TRANSIT- STIS/FUV TIME-TA F25QTZ MIRROR BUFFER-TIME=99 1 2000 S FUV -MAMA G (2000 S) Comments: Make sure to offset to Io once Europa is acquired ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-FUV 1 STIS/FUV TIME-TA F25QTZ MIRROR none none none none 1 N/A -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [130] Visit: 41 (IO-POSTTRANSIT-FUV-1) Visit Requirements: SCHED 100%; AFTER 40 BY 0 S TO 52 H On Hold Comments: Additional Comments: STIS FUV imaging of the plumes on the limb post transit Use dither pattern Visit 1 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-POSTTRAN STIS/FUV TIME-TA F25QTZ MIRROR BUFFER-TIME=99 1 2000 S SIT-FUV -MAMA G (2000 S) Comments: Make sure to offset to Io once Europa is acquired ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-POSTTRANSIT-FUV 1 STIS/FUV TIME-TA F25QTZ MIRROR none none none none 1 N/A -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [131] Visit: 42 (IO-TRANSIT-FUV-2) Visit Requirements: SCHED 100%; BETWEEN 2025.333:23:12:00 AND 2025.334:00:12:00 On Hold Comments: Additional Comments: STIS FUV imaging of the plumes on the limb of Io while transiting Jupiter Visit 2 Using the Dither pattern used in Sparks' program for Europa Plumes - we'll need to iterate on the Level 3 definition of the target. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-TRANSIT- STIS/FUV TIME-TA F25QTZ MIRROR BUFFER-TIME=99 1 1960 S POS TARG 7.0, -7.0 FUV2 -MAMA G (1960 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-FUV2 1 STIS/FUV TIME-TA F25QTZ MIRROR none none none none 1 N/A -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [132] Visit: 43 (IO-POSTTRANSIT-FUV-2) Visit Requirements: SCHED 100%; AFTER 42 BY 0 S TO 52 H On Hold Comments: Additional Comments: STIS FUV imaging of the plumes on the limb post transit Use dither pattern with Level 3. Using the Dither pattern used in Sparks' program for Europa Plumes - we'll need to iterate on the Level 3 definition of the target. Visit 2 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-POSTTRAN STIS/FUV TIME-TA F25QTZ MIRROR BUFFER-TIME=99 1 2000 S POS TARG 7.0, -7.0 SIT-FUV2 -MAMA G see below (2365 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-POSTTRANSIT-FUV2 1 STIS/FUV TIME-TA F25QTZ MIRROR none none none none 1 2365.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [133] Visit: 44 (IO-TRANSIT-FUV-3) Visit Requirements: SCHED 100%; BETWEEN 2025.342:19:00:00 AND 2025.342:20:20:00 On Hold Comments: Additional Comments: STIS FUV imaging of the plumes on the limb of Io while transiting Jupiter Visit 3 Originally had requirement of AFTER 02-AUG-2024:00:00:00. This was removed to pull early. Using the Dither pattern used in Sparks' program for Europa Plumes - we'll need to iterate on the Level 3 definition of the target. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-TRANSIT- STIS/FUV TIME-TA F25QTZ MIRROR BUFFER-TIME=99 1 1280 S POS TARG 7, -7.0 FUV2 -MAMA G see below (1959 S) Comments: Skip the Europa acquisition and offset. Visits 40/41 look good. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-FUV2 1 STIS/FUV TIME-TA F25QTZ MIRROR none none none none 1 1959.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [134] Visit: 45 (IO-TRANSIT-NUV-4) Visit Requirements: SCHED 100%; AFTER 02-AUG-2024:00:00:00 On Hold Comments: Additional Comments: STIS FUV imaging of the plumes on the limb of Io while transiting Jupiter Visit 4 Trying another detector but with same 25QTZ filter based on Kandis Lea and Lori's suggestion. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-TRANSIT- STIS/NUV TIME-TA F25QTZ MIRROR BUFFER-TIME=99 1 1280 S POS TARG null, -3.0 NUV4 -MAMA G see below (1949 S) Comments: Skip the Europa acquisition and offset. Visits 40/41 look good. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-NUV4 1 STIS/NUV TIME-TA F25QTZ MIRROR none none none none 1 1949.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [135] Visit: 46 (IO-WFC3-Transit-1) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Imaging mostly dust absorption at visible wavelengths, transit events near the beginning and end of Cy31 (1-orbit each) are planned with WFC3 filter sets (F225W, F275W, F336W, F343N, F390M, F390W, F467M, F502N, F555W). BEFORE timing requirement replaced with a BETWEEN of Nov 26 to Dec 9. This allows scheduling in 4 transits that are known to work and have no conflicts. - Januszewski If we have a few more seconds to optimize the orbit window then adding time evenly to F225W and F275W will be good. Implementing a 3-pt dither pattern with three exposures per filter setting. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F225W CR-SPLIT=NO 1 45 S (135 GS ACQ SCENARIO BASE1BR; WFC3 S 2C-SUB S) SEQ 1-9 NON-INT; PATTERN 11 1-9 Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F275W CR-SPLIT=NO 1 30 S (90 WFC3 S 2C-SUB S) Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. Replace F280N with F275W for better signal quality and bandpass coverage. ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F336W CR-SPLIT=NO 1 3 S (9 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F343N CR-SPLIT=NO 1 6 S (18 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F390M CR-SPLIT=NO 1 4 S (12 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [136] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F390W CR-SPLIT=NO 1 1 S (3 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F467M CR-SPLIT=NO 1 1.2 S (3.6 WFC3 S 2C-SUB S) Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 8 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F502N CR-SPLIT=NO 1 3 S (9 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 9 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F547M CR-SPLIT=NO 1 0.5 S (1.5 WFC3 S 2C-SUB S) Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-WFC3 1 WFC3/UVI ACCUM UVIS2-C5 F225W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 1 WFC3/UVI ACCUM UVIS2-C5 F225W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 1 WFC3/UVI ACCUM UVIS2-C5 F225W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 2 WFC3/UVI ACCUM UVIS2-C5 F275W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 2 WFC3/UVI ACCUM UVIS2-C5 F275W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 2 WFC3/UVI ACCUM UVIS2-C5 F275W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 3 WFC3/UVI ACCUM UVIS2-C5 F336W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 3 WFC3/UVI ACCUM UVIS2-C5 F336W 2 none none none 1 N/A S 12C-SUB 17470(101) - 31-Dec-2025 15:53:11 - [137] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-WFC3 3 WFC3/UVI ACCUM UVIS2-C5 F336W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 4 WFC3/UVI ACCUM UVIS2-C5 F343N 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 4 WFC3/UVI ACCUM UVIS2-C5 F343N 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 4 WFC3/UVI ACCUM UVIS2-C5 F343N 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 5 WFC3/UVI ACCUM UVIS2-C5 F390M 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 5 WFC3/UVI ACCUM UVIS2-C5 F390M 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 5 WFC3/UVI ACCUM UVIS2-C5 F390M 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 6 WFC3/UVI ACCUM UVIS2-C5 F390W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 6 WFC3/UVI ACCUM UVIS2-C5 F390W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 6 WFC3/UVI ACCUM UVIS2-C5 F390W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 7 WFC3/UVI ACCUM UVIS2-C5 F467M 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 7 WFC3/UVI ACCUM UVIS2-C5 F467M 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 7 WFC3/UVI ACCUM UVIS2-C5 F467M 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 8 WFC3/UVI ACCUM UVIS2-C5 F502N 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 8 WFC3/UVI ACCUM UVIS2-C5 F502N 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 8 WFC3/UVI ACCUM UVIS2-C5 F502N 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 9 WFC3/UVI ACCUM UVIS2-C5 F547M 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 9 WFC3/UVI ACCUM UVIS2-C5 F547M 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 9 WFC3/UVI ACCUM UVIS2-C5 F547M 3 none none none 1 N/A S 12C-SUB 17470(101) - 31-Dec-2025 15:53:11 - [138] Visit: 47 (IO-WFC3-Transit-2) Visit Requirements: SCHED 100%; BETWEEN 2024.262:19:20:00 AND 2024.262:20:20:00 On Hold Comments: Additional Comments: Imaging mostly dust absorption at visible wavelengths, transit events near the beginning and end of Cy31 (1-orbit each) are planned with WFC3 filter sets (F225W, F280N, F336W, F343N, F390W, F475W, F555W). Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F225W CR-SPLIT=NO 1 45 S (135 SEQ 1-9 NON-INT; PATTERN WFC3 S 2C-SUB S) 11 1-9 Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F275W CR-SPLIT=NO 1 30 S (90 WFC3 S 2C-SUB S) Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. Replace F280N with F275W for better signal quality and bandpass coverage. ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F336W CR-SPLIT=NO 1 3 S (9 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F343N CR-SPLIT=NO 1 6 S (18 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F390M CR-SPLIT=NO 1 4 S (12 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F390W CR-SPLIT=NO 1 1 S (3 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [139] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F467M CR-SPLIT=NO 1 1.2 S (3.6 WFC3 S 2C-SUB S) Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 8 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F502N CR-SPLIT=NO 1 3 S (9 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 9 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F547M CR-SPLIT=NO 1 0.5 S (1.5 WFC3 S 2C-SUB S) Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-WFC3 1 WFC3/UVI ACCUM UVIS2-C5 F225W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 1 WFC3/UVI ACCUM UVIS2-C5 F225W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 1 WFC3/UVI ACCUM UVIS2-C5 F225W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 2 WFC3/UVI ACCUM UVIS2-C5 F275W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 2 WFC3/UVI ACCUM UVIS2-C5 F275W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 2 WFC3/UVI ACCUM UVIS2-C5 F275W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 3 WFC3/UVI ACCUM UVIS2-C5 F336W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 3 WFC3/UVI ACCUM UVIS2-C5 F336W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 3 WFC3/UVI ACCUM UVIS2-C5 F336W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 4 WFC3/UVI ACCUM UVIS2-C5 F343N 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 4 WFC3/UVI ACCUM UVIS2-C5 F343N 2 none none none 1 N/A S 12C-SUB 17470(101) - 31-Dec-2025 15:53:11 - [140] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-WFC3 4 WFC3/UVI ACCUM UVIS2-C5 F343N 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 5 WFC3/UVI ACCUM UVIS2-C5 F390M 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 5 WFC3/UVI ACCUM UVIS2-C5 F390M 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 5 WFC3/UVI ACCUM UVIS2-C5 F390M 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 6 WFC3/UVI ACCUM UVIS2-C5 F390W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 6 WFC3/UVI ACCUM UVIS2-C5 F390W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 6 WFC3/UVI ACCUM UVIS2-C5 F390W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 7 WFC3/UVI ACCUM UVIS2-C5 F467M 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 7 WFC3/UVI ACCUM UVIS2-C5 F467M 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 7 WFC3/UVI ACCUM UVIS2-C5 F467M 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 8 WFC3/UVI ACCUM UVIS2-C5 F502N 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 8 WFC3/UVI ACCUM UVIS2-C5 F502N 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 8 WFC3/UVI ACCUM UVIS2-C5 F502N 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 9 WFC3/UVI ACCUM UVIS2-C5 F547M 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 9 WFC3/UVI ACCUM UVIS2-C5 F547M 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 9 WFC3/UVI ACCUM UVIS2-C5 F547M 3 none none none 1 N/A S 12C-SUB 17470(101) - 31-Dec-2025 15:53:11 - [141] Visit: 48 (IO-TRANSIT-STISNUV-SO2-1) Visit Requirements: SCHED 100%; BETWEEN 02-DEC-2024:01:33:00 AND 02-DEC-2024:03:57:00 On Hold Comments: Additional Comments: Version of the NUV transit observation using central wavelength 2095 BETWEEN added to target a specific transit the PC knows will work. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=21, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: For acquisition with Europa on 25 November 2023: Europa diameter is 1.0.6 arcesc. Thus the checkbox is set to 1.06/0.05 = 21 pixels here. October 8-10, 2024 is 18.9 pixels for Europa, hend checkbox 19. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- STIS/NUV TIME-TA 52X0.5 G230M 2095 BUFFER-TIME=100 1 200 S PATTERN 5 2 STISNUV -MAMA G see below (736 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-TRANSIT-STISNUV 2 STIS/NUV TIME-TA 52X0.5 G230M 2095 1 none none none 1 184.0 S -MAMA G IO-TRANSIT-STISNUV 2 STIS/NUV TIME-TA 52X0.5 G230M 2095 2 none none none 1 184.0 S -MAMA G IO-TRANSIT-STISNUV 2 STIS/NUV TIME-TA 52X0.5 G230M 2095 3 none none none 1 184.0 S -MAMA G IO-TRANSIT-STISNUV 2 STIS/NUV TIME-TA 52X0.5 G230M 2095 4 none none none 1 184.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [142] Visit: 49 (IO-TRANSIT-STISNUV-SO2-2) Visit Requirements: SCHED 100%; AFTER 02-AUG-2024:00:00:00 On Hold Comments: Additional Comments: Version of the NUV transit observation using central wavelength 2095 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ3 STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=21, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 SEQ 1-2 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Used the exposure time from previous programs (e.g.15419) ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- STIS/NUV TIME-TA 52X0.5 G230M 2095 BUFFER-TIME=128 1 200 S PATTERN 5 2 STISNUV2 -MAMA G see below (796 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ3 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2095 1 none none none 1 199.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2095 2 none none none 1 199.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2095 3 none none none 1 199.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2095 4 none none none 1 199.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [143] Visit: 4A (Io Neutral Cloud Trailing) Visit Requirements: SCHED 100%; BETWEEN 2025.329:02:08:00 AND 2025.329:03:08:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-T STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 RAILING DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At 25-Nov-2025 (25.329) from 02:38 to 05:00, Io's diameter is 1.11 arcesc. Thus the checkbox is set to (1.11/0.05 = 22.1) 25 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-T STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1416 S POS TARG null, -5.0; SEQ RAILING -MAMA G (1416 S) 2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-T STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2136 S POS TARG null, -5.0; SEQ RAILING -MAMA G (2136 S) 3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-TRAILING 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-NCLOUD-TRAILING 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 N/A -MAMA G IO-NCLOUD-TRAILING 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 N/A -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [144] Visit: 50 (IO-TRANSIT-STISNUV-S2-1) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Version of the NUV transit observation using central wavelength 2659 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ3 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=21, 1 0.3 S (0.3 SEQ 1-2 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Used the exposure time from previous programs (e.g.15419) ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- STIS/NUV TIME-TA 52X0.5 G230M 2659 BUFFER-TIME=120 1 130 S PATTERN 6 2 STISNUV2 -MAMA G see below (580 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ3 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 1 none none none 1 116.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 2 none none none 1 116.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 3 none none none 1 116.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 4 none none none 1 116.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 5 none none none 1 116.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [145] Visit: 51 (IO-TRANSIT-STISNUV-S2-2) Visit Requirements: SCHED 100%; AFTER 02-AUG-2023:00:00:00 On Hold Comments: Additional Comments: Version of the NUV transit observation using central wavelength 2659 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ3 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=21, 1 0.3 S (0.3 SEQ 1-2 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Used the exposure time from previous programs (e.g.15419) For Ganymede, checkbox 37 if after Nov. 18, 2024. Checkbox 35 for Oct. 21 to Nov. 18, 2024. Checkbox 33 if before Oct. 21. Switch to a Europa offset and relevent checkboxes instead if feasible. Updated Target to Europa for a TA. 202 Europa-Acq2 is like 100 but for year 2. For Europa, checkbox TBC if after Nov, 2025. Checkbox TBC for Sept. to Nov., 2025. Checkbox TBC if before TBC 2025. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- STIS/NUV TIME-TA 52X0.5 G230M 2659 BUFFER-TIME=120 1 130 S PATTERN 6 2 STISNUV2 -MAMA G see below (385 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ3 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 1 none none none 1 77.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 2 none none none 1 77.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 3 none none none 1 77.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 4 none none none 1 77.0 S -MAMA G IO-TRANSIT-STISNUV2 2 STIS/NUV TIME-TA 52X0.5 G230M 2659 5 none none none 1 77.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [146] Visit: 52 (IO-TRANSIT-COSNUV-1) Visit Requirements: SCHED 100%; BETWEEN 2025.349:20:38:00 AND 2025.349:21:40:00 On Hold Comments: Additional Comments: With TIME-TAG mode. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ3 COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) RCH CENTER=FLUX-WT-FLR Comments: Offset from europa is ok. It seemed too hard for Bill to acquire on Io instead while sunlit, shortly before transit first contact. Changed from pattern to a POSTARG series. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 138 S (138 POS TARG 0.0, 0.0; SEQ COSNUV G S) 2-4 NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. The NUV wavelengths are less critical to positioning for the gain-sag. First step is to stare while on Io itself. ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 500 S (500 POS TARG -3.0, 3.0 COSNUV G S) Comments: use postarg x=-3 and y=3 to offset in roughly east of Jupiter direction, assuming roll angle ~45 to Jupiter North as typical. This SO2 absorption at higher altitude away from Io is the primary objective. More like 4.2 arcsec offset with sqrt(2). ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 500 S (500 POS TARG -6.0, 6.0 COSNUV G S) Comments: use postarg x=-6 and y=6 to offset in roughly east of Jupiter direction, assuming roll angle ~45 to Jupiter North as typical. The 6 arcsec location provides more of a baseline without much SO2 absorption. More like 8.5 arcsec offset with sqrt(2). ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [147] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ3 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A RCH IO-TRANSIT-COSNUV 2 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G IO-TRANSIT-COSNUV 3 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G IO-TRANSIT-COSNUV 4 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G 17470(101) - 31-Dec-2025 15:53:11 - [148] Visit: 53 (IO-TRANSIT-COSNUV-2) Visit Requirements: SCHED 100%; BETWEEN 2025.358:16:30:00 AND 2025.358:17:30:00 On Hold Comments: Additional Comments: With TIME-TAG mode. With the 2nd event in the series we'll add a pre-transit observation in the preceeding orbit, without the Jupiter background Line13 pattern. (2 orbits total, unlike the 1 orbits for the others). We might trade the orbit for COSNUV-4 to do this two-orbit plan with COSNUV-3 as well, given the better exposure times and planning logic. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ3 COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) RCH CENTER=FLUX-WT-FLR Comments: It will probably be best to acquire on Io instead while sunlit, shortly before transit first contact. A few of the pattern exposures while still in sunlight wouldn't be terrible. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 138 S (138 POS TARG 0.0, 0.0; SEQ COSNUV2 G S) 2-4 NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. The NUV wavelengths are less critical to positioning for the gain-sag. First step is to stare while on Io itself. ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 500 S (500 POS TARG -3.0, 3.0 COSNUV2 G S) Comments: use postarg x=-3 and y=3 to offset in roughly east of Jupiter direction, assuming roll angle ~45 to Jupiter North as typical. This SO2 absorption at higher altitude away from Io is the primary objective. More like 4.2 arcsec offset with sqrt(2). ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [149] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 500 S (500 POS TARG -6.0, 6.0 COSNUV2 G S) Comments: use postarg x=-6 and y=6 to offset in roughly east of Jupiter direction, assuming roll angle ~45 to Jupiter North as typical. The 6 arcsec location provides more of a baseline without much SO2 absorption. More like 8.5 arcsec offset with sqrt(2). ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ3 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A RCH IO-TRANSIT-COSNUV2 2 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G IO-TRANSIT-COSNUV2 3 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G IO-TRANSIT-COSNUV2 4 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G 17470(101) - 31-Dec-2025 15:53:11 - [150] Visit: 54 (IO-TRANSIT-COSNUV-3) Visit Requirements: SCHED 100%; BETWEEN 2025.360:10:55:00 AND 2025.360:11:55:00 On Hold Comments: Additional Comments: With TIME-TAG mode. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ3 COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) RCH CENTER=FLUX-WT-FLR Comments: It will probably be best to acquire on Io instead while sunlit, shortly before transit first contact. A few of the pattern exposures while still in sunlight wouldn't be terrible. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 138 S (138 POS TARG 0, 0; SEQ 2-4 COSNUV2 G S) NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. The NUV wavelengths are less critical to positioning for the gain-sag. First step is to stare while on Io itself. ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 500 S (500 POS TARG 0, 3.0 COSNUV2 G S) Comments: use postarg x=-3 and y=3 to offset in roughly east of Jupiter direction, assuming roll angle ~45 to Jupiter North as typical. This SO2 absorption at higher altitude away from Io is the primary objective. More like 4.2 arcsec offset with sqrt(2). ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 500 S (500 POS TARG 0, 6.0 COSNUV2 G S) Comments: use postarg x=-6 and y=6 to offset in roughly east of Jupiter direction, assuming roll angle ~45 to Jupiter North as typical. The 6 arcsec location provides more of a baseline without much SO2 absorption. More like 8.5 arcsec offset with sqrt(2). ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [151] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ3 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A RCH IO-TRANSIT-COSNUV2 2 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G IO-TRANSIT-COSNUV2 3 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G IO-TRANSIT-COSNUV2 4 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G 17470(101) - 31-Dec-2025 15:53:11 - [152] Visit: 55 (IO-TRANSIT-COSNUV-4) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: With TIME-TAG mode. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ3 COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) RCH CENTER=FLUX-WT-FLR Comments: It will probably be best to acquire on Io instead while sunlit, shortly before transit first contact. A few of the pattern exposures while still in sunlight wouldn't be terrible. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 138 S (138 POS TARG 0.0, 0.0; SEQ COSNUV G S) 2-4 NON-INT Comments: We prefer to have one long TIME-TAG exposure and simply move the pointing during the exposure, but I didn't see a good way to set this up. We do not vary FP-POS because we are looking for time variability and thus prefer to not change the instruments settings during the exposure. The NUV wavelengths are less critical to positioning for the gain-sag. First step is to stare while on Io itself. ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 500 S (500 POS TARG -3.0, 0 COSNUV G S) Comments: use postarg x=-3 and y=3 to offset in roughly east of Jupiter direction, assuming roll angle ~45 to Jupiter North as typical. This SO2 absorption at higher altitude away from Io is the primary objective. More like 4.2 arcsec offset with sqrt(2). ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-TRANSIT- COS/NUV TIME-TA PSA G225M 2217 BUFFER-TIME=100, FP-POS=1 1 500 S (500 POS TARG -6.0, 0.0 COSNUV G S) Comments: use postarg x=-6 and y=6 to offset in roughly east of Jupiter direction, assuming roll angle ~45 to Jupiter North as typical. The 6 arcsec location provides more of a baseline without much SO2 absorption. More like 8.5 arcsec offset with sqrt(2). ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [153] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ3 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A RCH IO-TRANSIT-COSNUV 2 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G IO-TRANSIT-COSNUV 3 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G IO-TRANSIT-COSNUV 4 COS/NUV TIME-TA PSA G225M 2217 none none none none 1 N/A G 17470(101) - 31-Dec-2025 15:53:11 - [154] Visit: 5A (Io Neutral Cloud Leading 2) Visit Requirements: SCHED 100%; BETWEEN 2025.330:01:13:00 AND 2025.330:02:13:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-L STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 EADING2 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Nov. 17 Io's diameter is 21.7 pixels. Dec. 24, 2025 the size is 23.6 pixels. Thus the checkbox is left at 25 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-L STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1416 S POS TARG null, -5.0; SEQ EADING2 -MAMA G (1416 S) 2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-L STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2136 S POS TARG null, -5.0; SEQ EADING2 -MAMA G (2136 S) 3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-LEADING2 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-NCLOUD-LEADING2 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 N/A -MAMA G IO-NCLOUD-LEADING2 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 N/A -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [155] Visit: 60 (IO-ECLIPSE-VIS-LOKI-STARE) Visit Requirements: SCHED 100%; BETWEEN 12-SEP-2024:13:15:00 AND 12-SEP-2024:14:15:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=19, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Checkbox size may need to be adjusted to expected size of Europa. Europa is 17.4-17.5 pixels on Sept. 9-14 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-ECLIPSE- STIS/CCD ACCUM 52X0.1E1 G750L 7751 GAIN=1, CR-SPLIT=3 1 507 S (507 VIS-LOKI-ST S) ARE ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-ECLIPSE- STIS/CCD ACCUM 52X0.1E1 G750L 7751 CR-SPLIT=3, GAIN=1 1 507 S (507 VIS-LOKI-ST S) ARE ------------------------------------------------------------------------------------------------------------------------------------ 4 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) Comments: Added a wavecal and a Fringe flat. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-ECLIPSE-VIS-LOKI 2 STIS/CCD ACCUM 52X0.1E1 G750L 7751 none none none 1 1 N/A -STARE IO-ECLIPSE-VIS-LOKI 2 STIS/CCD ACCUM 52X0.1E1 G750L 7751 none none none 2 1 N/A -STARE IO-ECLIPSE-VIS-LOKI 2 STIS/CCD ACCUM 52X0.1E1 G750L 7751 none none none 3 1 N/A -STARE IO-ECLIPSE-VIS-LOKI 3 STIS/CCD ACCUM 52X0.1E1 G750L 7751 none none none 1 1 N/A -STARE IO-ECLIPSE-VIS-LOKI 3 STIS/CCD ACCUM 52X0.1E1 G750L 7751 none none none 2 1 N/A -STARE IO-ECLIPSE-VIS-LOKI 3 STIS/CCD ACCUM 52X0.1E1 G750L 7751 none none none 3 1 N/A -STARE CCDFLAT 4 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A 17470(101) - 31-Dec-2025 15:53:11 - [156] Visit: 61 (IO-ECLIPSE-VIS-LOKI-SCAN) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Added a fringe flat, but skip the wavecal (visit 60 has a wavecal for cross-reference). Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ2 STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=17, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 SEQ 1-3 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Checkbox size may need to be adjusted to expected size of Europa. Europa is 16.68 pixels on Oct. 12. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-ECLIPSE- STIS/CCD ACCUM 52X0.1E1 G750L 7751 GAIN=1, CR-SPLIT=2 1 304 S (912 PATTERN 10 2 VIS-LOKI-SC S) AN ------------------------------------------------------------------------------------------------------------------------------------ 3 CCDFLAT STIS/CCD ACCUM 52X0.1 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ2 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-ECLIPSE-VIS-LOKI 2 STIS/CCD ACCUM 52X0.1E1 G750L 7751 1 none none 1 1 N/A -SCAN IO-ECLIPSE-VIS-LOKI 2 STIS/CCD ACCUM 52X0.1E1 G750L 7751 1 none none 2 1 N/A -SCAN IO-ECLIPSE-VIS-LOKI 2 STIS/CCD ACCUM 52X0.1E1 G750L 7751 2 none none 1 1 N/A -SCAN IO-ECLIPSE-VIS-LOKI 2 STIS/CCD ACCUM 52X0.1E1 G750L 7751 2 none none 2 1 N/A -SCAN IO-ECLIPSE-VIS-LOKI 2 STIS/CCD ACCUM 52X0.1E1 G750L 7751 3 none none 1 1 N/A -SCAN IO-ECLIPSE-VIS-LOKI 2 STIS/CCD ACCUM 52X0.1E1 G750L 7751 3 none none 2 1 N/A -SCAN CCDFLAT 3 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 1 none 1 N/A CCDFLAT 3 STIS/CCD ACCUM 52X0.1 G750L 7751 none none 2 none 1 N/A 17470(101) - 31-Dec-2025 15:53:11 - [157] Visit: 62 (IO-ECLIPSE-VIS-S2) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=19, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Checkbox size may need to be adjusted to expected size of Europa. Europa is 17.4-17.5 pixels on Sept. 9-14 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-ECLIPSE- STIS/CCD ACCUM 52X2 G430M 4706 GAIN=1, CR-SPLIT=2 1 520 S (520 VIS-S2 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-ECLIPSE- STIS/CCD ACCUM 52X2 G430M 4706 GAIN=1, CR-SPLIT=2 1 520 S (520 VIS-S2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-ECLIPSE-VIS-S2 2 STIS/CCD ACCUM 52X2 G430M 4706 none none none 1 1 N/A IO-ECLIPSE-VIS-S2 2 STIS/CCD ACCUM 52X2 G430M 4706 none none none 2 1 N/A IO-ECLIPSE-VIS-S2 3 STIS/CCD ACCUM 52X2 G430M 4706 none none none 1 1 N/A IO-ECLIPSE-VIS-S2 3 STIS/CCD ACCUM 52X2 G430M 4706 none none none 2 1 N/A 17470(101) - 31-Dec-2025 15:53:11 - [158] Visit: 63 (IO-ECLIPSE-VIS-NA-SCAN) Visit Requirements: SCHED 100%; BETWEEN 2025.324:03:45:00 AND 2025.324:05:15:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ2 STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=19, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 SEQ 1-2 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Checkbox size may need to be adjusted to expected size of Europa. Europa is 17.4-17.5 pixels on Sept. 9-14 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-ECLIPSE- STIS/CCD ACCUM 52X0.5E1 G750M 6094 GAIN=1, CR-SPLIT=2 1 270 S (810 PATTERN 7 2 VIS-NA-SCAN S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ2 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-ECLIPSE-VIS-NA-S 2 STIS/CCD ACCUM 52X0.5E1 G750M 6094 1 none none 1 1 N/A CAN IO-ECLIPSE-VIS-NA-S 2 STIS/CCD ACCUM 52X0.5E1 G750M 6094 1 none none 2 1 N/A CAN IO-ECLIPSE-VIS-NA-S 2 STIS/CCD ACCUM 52X0.5E1 G750M 6094 2 none none 1 1 N/A CAN IO-ECLIPSE-VIS-NA-S 2 STIS/CCD ACCUM 52X0.5E1 G750M 6094 2 none none 2 1 N/A CAN IO-ECLIPSE-VIS-NA-S 2 STIS/CCD ACCUM 52X0.5E1 G750M 6094 3 none none 1 1 N/A CAN IO-ECLIPSE-VIS-NA-S 2 STIS/CCD ACCUM 52X0.5E1 G750M 6094 3 none none 2 1 N/A CAN 17470(101) - 31-Dec-2025 15:53:11 - [159] Visit: 64 (IO-ECLIPSE-VIS-HALPHA) Visit Requirements: SCHED 100%; BETWEEN 2025.318:20:40:00 AND 2025.318:22:40:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ2 STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=19, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Checkbox size may need to be adjusted to expected size of Europa. Europa is 17.4-17.5 pixels on Sept. 9-14 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-ECLIPSE- STIS/CCD ACCUM 52X2E1 G750M 6768 GAIN=1, CR-SPLIT=2 1 490 S (490 VIS-HALPHA S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-ECLIPSE- STIS/CCD ACCUM 52X2E1 G750M 6768 GAIN=1, CR-SPLIT=2 1 490 S (490 VIS-HALPHA S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ2 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-ECLIPSE-VIS-HALP 2 STIS/CCD ACCUM 52X2E1 G750M 6768 none none none 1 1 N/A HA IO-ECLIPSE-VIS-HALP 2 STIS/CCD ACCUM 52X2E1 G750M 6768 none none none 2 1 N/A HA IO-ECLIPSE-VIS-HALP 3 STIS/CCD ACCUM 52X2E1 G750M 6768 none none none 1 1 N/A HA IO-ECLIPSE-VIS-HALP 3 STIS/CCD ACCUM 52X2E1 G750M 6768 none none none 2 1 N/A HA 17470(101) - 31-Dec-2025 15:53:11 - [160] Visit: 65 (IO-ECLIPSE-VIS-K) Visit Requirements: SCHED 100%; BETWEEN 2025.325:22:14:00 AND 2025.325:23:14:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ2 STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=19, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Checkbox size may need to be adjusted to expected size of Europa. Europa is 17.4-17.5 pixels on Sept. 9-14 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-ECLIPSE- STIS/CCD ACCUM 52X2E1 G750M 7795 GAIN=1, CR-SPLIT=2 1 494 S (494 VIS-K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-ECLIPSE- STIS/CCD ACCUM 52X2E1 G750M 7795 GAIN=1, CR-SPLIT=2 1 494 S (494 VIS-K S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CCDFLAT STIS/CCD ACCUM 52X2 G750M 7795 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ2 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-ECLIPSE-VIS-K 2 STIS/CCD ACCUM 52X2E1 G750M 7795 none none none 1 1 N/A IO-ECLIPSE-VIS-K 2 STIS/CCD ACCUM 52X2E1 G750M 7795 none none none 2 1 N/A IO-ECLIPSE-VIS-K 3 STIS/CCD ACCUM 52X2E1 G750M 7795 none none none 1 1 N/A IO-ECLIPSE-VIS-K 3 STIS/CCD ACCUM 52X2E1 G750M 7795 none none none 2 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X2 G750M 7795 none none 1 none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X2 G750M 7795 none none 2 none 1 N/A 17470(101) - 31-Dec-2025 15:53:11 - [161] Visit: 66 (Io Eclipse Ingress COS NUV) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-ECLIPSE- COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) INGRESS-COS RCH CENTER=FLUX-WT-FLR -NUV ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-ECLIPSE- COS/NUV TIME-TA PSA G230L 2635 BUFFER-TIME=100, FP-POS=ALL 1 30 S INGRESS-COS G see below -NUV (1460 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-ECLIPSE- COS/NUV TIME-TA PSA G230L 2635 BUFFER-TIME=100, FP-POS=ALL 1 45 S INGRESS-COS G see below -NUV (2068 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-ECLIPSE-INGRESS- 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A COS-NUV RCH IO-ECLIPSE-INGRESS- 2 COS/NUV TIME-TA PSA G230L 2635 none none none 1 1 365.0 S COS-NUV G IO-ECLIPSE-INGRESS- 2 COS/NUV TIME-TA PSA G230L 2635 none none none 2 1 365.0 S COS-NUV G IO-ECLIPSE-INGRESS- 2 COS/NUV TIME-TA PSA G230L 2635 none none none 3 1 365.0 S COS-NUV G IO-ECLIPSE-INGRESS- 2 COS/NUV TIME-TA PSA G230L 2635 none none none 4 1 365.0 S COS-NUV G IO-ECLIPSE-INGRESS- 3 COS/NUV TIME-TA PSA G230L 2635 none none none 1 2 517.0 S COS-NUV G IO-ECLIPSE-INGRESS- 3 COS/NUV TIME-TA PSA G230L 2635 none none none 2 2 517.0 S COS-NUV G IO-ECLIPSE-INGRESS- 3 COS/NUV TIME-TA PSA G230L 2635 none none none 3 2 517.0 S COS-NUV G IO-ECLIPSE-INGRESS- 3 COS/NUV TIME-TA PSA G230L 2635 none none none 4 2 517.0 S COS-NUV G 17470(101) - 31-Dec-2025 15:53:11 - [162] Visit: 67 (Io Eclipse Ingress COS NUV) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: This observation requires acquisition from a sunlit moon, followed by a blind offset to a moon in shadow. Europa is used here, but Ganymede or Callisto should be used if Europa is too close to Jupiter. No longer able to do EGRESS's Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ3 COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) RCH CENTER=FLUX-WT-FLR ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-ECLIPSE- COS/NUV TIME-TA PSA G230L 2635 BUFFER-TIME=100, FP-POS=ALL 1 30 S EGRESS-COS- G see below NUV (1028 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-ECLIPSE- COS/NUV TIME-TA PSA G230L 2635 BUFFER-TIME=100, FP-POS=ALL 1 45 S EGRESS-COS- G see below NUV (2068 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ3 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A RCH IO-ECLIPSE-EGRESS-C 2 COS/NUV TIME-TA PSA G230L 2635 none none none 1 1 257.0 S OS-NUV G IO-ECLIPSE-EGRESS-C 2 COS/NUV TIME-TA PSA G230L 2635 none none none 2 1 257.0 S OS-NUV G IO-ECLIPSE-EGRESS-C 2 COS/NUV TIME-TA PSA G230L 2635 none none none 3 1 257.0 S OS-NUV G IO-ECLIPSE-EGRESS-C 2 COS/NUV TIME-TA PSA G230L 2635 none none none 4 1 257.0 S OS-NUV G IO-ECLIPSE-EGRESS-C 3 COS/NUV TIME-TA PSA G230L 2635 none none none 1 2 517.0 S OS-NUV G IO-ECLIPSE-EGRESS-C 3 COS/NUV TIME-TA PSA G230L 2635 none none none 2 2 517.0 S OS-NUV G IO-ECLIPSE-EGRESS-C 3 COS/NUV TIME-TA PSA G230L 2635 none none none 3 2 517.0 S OS-NUV G IO-ECLIPSE-EGRESS-C 3 COS/NUV TIME-TA PSA G230L 2635 none none none 4 2 517.0 S OS-NUV G 17470(101) - 31-Dec-2025 15:53:11 - [163] Visit: 68 (IO-ECLIPSE-STIS-NUV) Visit Requirements: SCHED 100%; AFTER 66 BY 0 M TO 52 H On Hold Comments: Additional Comments: STIS NUV context for COS NUV ingress and egress observations. I have linked it to after ingress observation, could just as easily be before egress observation by 0 to 52 hr. We need to double check sensitivity of long wavelength S2 aurora emissions with CCD versus MAMA. Might switch to MAMA. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ACQ2 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=19, 1 0.3 S (0.3 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-ECLIPSE- STIS/CCD ACCUM 52X2 G230LB 2375 1 1242 S STIS-NUV (1242 S) Comments: Make sure to offset to Io once Europa is acquired ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ACQ2 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-ECLIPSE-STIS-NUV 2 STIS/CCD ACCUM 52X2 G230LB 2375 none none none 1 1 N/A IO-ECLIPSE-STIS-NUV 2 STIS/CCD ACCUM 52X2 G230LB 2375 none none none 2 1 N/A 17470(101) - 31-Dec-2025 15:53:11 - [164] Visit: 6A (Io Neutral Cloud Trailing 2) Visit Requirements: SCHED 100%; BETWEEN 2025.336:05:20:00 AND 2025.336:06:20:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-NCLOUD-T STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 RAILING DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Dec. 23, 2025 the size is 23.6 pixels. Thus the checkbox is left at 25 pixels here. On 02-Dec-2025 (25.336) the size is 22.68 pixels, so we have a 2-pixel margin for good measure. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-NCLOUD-T STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1416 S POS TARG null, -5.0; SEQ RAILING -MAMA G (1416 S) 2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-NCLOUD-T STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2136 S POS TARG null, -5.0; SEQ RAILING -MAMA G (2136 S) 3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-NCLOUD-TRAILING 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-NCLOUD-TRAILING 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 N/A -MAMA G IO-NCLOUD-TRAILING 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 N/A -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [165] Visit: 80 (Io Leading STIS VIS) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=25, 1 0.3 S (0.3 SEQ 1-2 NON-INT STIS-VIS-LE DIFFUSE-CENTER=GEOMETRIC-CENTE S) ADING R Comments: Visit planned for Dec 4, 2023. Io diameter is 1.22 and CHECKBOX thus 1.22/0.05 = 24.4 ~ 25 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- STIS/CCD ACCUM 52X0.05 G750L 7751 SIZEAXIS2=80, CR-SPLIT=NO, 1 6 S PATTERN 1 2 STIS-VIS-LE WAVECAL=NO see below ADING (140 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/CCD ACCUM 52X0.05 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CCDFLAT STIS/CCD ACCUM 52X0.05 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-SURFACE- STIS/CCD ACCUM 52X0.05 G430L 4300 SIZEAXIS2=80, CR-SPLIT=NO, 1 20 S SEQ 5 NON-INT; PATTERN 1 STIS-VIS-LE WAVECAL=NO see below 5 ADING (476 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 WAVE STIS/CCD ACCUM 52X0.05 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 1 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 2 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 3 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 4 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 5 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 6 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 7 none none none 1 5.0 S -LEADING 17470(101) - 31-Dec-2025 15:53:11 - [166] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 8 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 9 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 10 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 11 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 12 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 13 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 14 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 15 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 16 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 17 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 18 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 19 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 20 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 21 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 22 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 23 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 24 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 25 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 26 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 27 none none none 1 5.0 S -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 28 none none none 1 5.0 S -LEADING WAVE 3 STIS/CCD ACCUM 52X0.05 G750L 7751 none none none none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X0.05 G750L 7751 none none 1 none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X0.05 G750L 7751 none none 2 none 1 N/A IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 1 none none none 2 17.0 S -LEADING 17470(101) - 31-Dec-2025 15:53:11 - [167] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 2 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 3 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 4 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 5 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 6 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 7 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 8 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 9 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 10 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 11 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 12 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 13 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 14 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 15 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 16 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 17 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 18 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 19 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 20 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 21 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 22 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 23 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 24 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 25 none none none 2 17.0 S -LEADING 17470(101) - 31-Dec-2025 15:53:11 - [168] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 26 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 27 none none none 2 17.0 S -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 28 none none none 2 17.0 S -LEADING WAVE 6 STIS/CCD ACCUM 52X0.05 G430L 4300 none none none none 2 N/A 17470(101) - 31-Dec-2025 15:53:11 - [169] Visit: 81 (Io Trailing STIS VIS) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=23, 1 0.3 S (0.3 GS ACQ SCENARIO BASE1BR; STIS-VIS-TR DIFFUSE-CENTER=GEOMETRIC-CENTE S) SEQ 1-2 NON-INT AILING R ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- STIS/CCD ACCUM 52X0.05 G750L 7751 SIZEAXIS2=80, CR-SPLIT=NO, 1 9 S (252 PATTERN 1 2 STIS-VIS-TR WAVECAL=NO S) AILING ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/CCD ACCUM 52X0.05 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CCDFLAT STIS/CCD ACCUM 52X0.05 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-SURFACE- STIS/CCD ACCUM 52X0.05 G430L 4300 SIZEAXIS2=80, CR-SPLIT=NO, 1 20 S SEQ 5 NON-INT; PATTERN 1 STIS-VIS-TR WAVECAL=NO see below 5 AILING (476 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 WAVE STIS/CCD ACCUM 52X0.05 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 1 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 2 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 3 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 4 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 5 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 6 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 7 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 8 none none none 1 N/A -TRAILING 17470(101) - 31-Dec-2025 15:53:11 - [170] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 9 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 10 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 11 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 12 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 13 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 14 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 15 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 16 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 17 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 18 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 19 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 20 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 21 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 22 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 23 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 24 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 25 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 26 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 27 none none none 1 N/A -TRAILING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 28 none none none 1 N/A -TRAILING WAVE 3 STIS/CCD ACCUM 52X0.05 G750L 7751 none none none none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X0.05 G750L 7751 none none 1 none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X0.05 G750L 7751 none none 2 none 1 N/A IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 1 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 2 none none none 2 17.0 S -TRAILING 17470(101) - 31-Dec-2025 15:53:11 - [171] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 3 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 4 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 5 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 6 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 7 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 8 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 9 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 10 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 11 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 12 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 13 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 14 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 15 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 16 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 17 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 18 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 19 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 20 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 21 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 22 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 23 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 24 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 25 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 26 none none none 2 17.0 S -TRAILING 17470(101) - 31-Dec-2025 15:53:11 - [172] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 27 none none none 2 17.0 S -TRAILING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 28 none none none 2 17.0 S -TRAILING WAVE 6 STIS/CCD ACCUM 52X0.05 G430L 4300 none none none none 2 N/A 17470(101) - 31-Dec-2025 15:53:11 - [173] Visit: 82 (IO-SURFACE-STIS-FUV-45) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 SEQ 1-2 NON-INT STIS-FUV-45 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: Visit planned for Dec 2, 2023. Io diameter is 1.22 and CHECKBOX thus 1.22/0.05 = 24.4 ~ 25 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 390 S POS TARG -0.25, null; STIS-FUV-45 -MAMA see below PATTERN 5 2 (1544 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-SURFACE- STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 390 S POS TARG +0.2, null; SEQ STIS-FUV-45 -MAMA see below 3 NON-INT; PATTERN 14 3 (2050 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-FUV 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A -45 IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 none none none 1 386.0 S -45 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 2 none none none 1 386.0 S -45 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 3 none none none 1 386.0 S -45 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 4 none none none 1 386.0 S -45 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 none none none 2 410.0 S -45 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 2 none none none 2 410.0 S -45 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 3 none none none 2 410.0 S -45 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 4 none none none 2 410.0 S -45 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 5 none none none 2 410.0 S -45 -MAMA 17470(101) - 31-Dec-2025 15:53:11 - [174] Visit: 83 (IO-SURFACE-STIS-FUV-135) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=23, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 GS ACQ SCENARIO BASE1BR; STIS-FUV-13 DIFFUSE-CENTER=GEOMETRIC-CENTE S) SEQ 1 NON-INT 5 R ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 390 S POS TARG -0.25, null; STIS-FUV-13 -MAMA see below PATTERN 5 2 5 (1524 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-SURFACE- STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 390 S POS TARG +0.2, null; STIS-FUV-13 -MAMA see below PATTERN 14 3 5 (2040 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-FUV 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A -135 IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 none none none 1 381.0 S -135 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 2 none none none 1 381.0 S -135 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 3 none none none 1 381.0 S -135 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 4 none none none 1 381.0 S -135 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 none none none 2 408.0 S -135 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 2 none none none 2 408.0 S -135 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 3 none none none 2 408.0 S -135 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 4 none none none 2 408.0 S -135 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 5 none none none 2 408.0 S -135 -MAMA 17470(101) - 31-Dec-2025 15:53:11 - [175] Visit: 84 (IO-SURFACE-STIS-FUV-225) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=23, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 GS ACQ SCENARIO BASE1BR; STIS-FUV-22 DIFFUSE-CENTER=GEOMETRIC-CENTE S) SEQ 1 NON-INT 5 R ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 374 S POS TARG -0.2, null; STIS-FUV-22 -MAMA (1496 S) PATTERN 5 2 5 ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-SURFACE- STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 403 S POS TARG +0.25, null; STIS-FUV-22 -MAMA (2015 S) PATTERN 14 3 5 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-FUV 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A -225 IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 none none none 1 N/A -225 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 2 none none none 1 N/A -225 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 3 none none none 1 N/A -225 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 4 none none none 1 N/A -225 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 none none none 2 N/A -225 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 2 none none none 2 N/A -225 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 3 none none none 2 N/A -225 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 4 none none none 2 N/A -225 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 5 none none none 2 N/A -225 -MAMA 17470(101) - 31-Dec-2025 15:53:11 - [176] Visit: 85 (IO-SURFACE-STIS-FUV-315) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=21, ACQTYPE=DIFFUSE, 1 0.3 S (0.3 SEQ 1 NON-INT STIS-FUV-31 DIFFUSE-CENTER=GEOMETRIC-CENTE S) 5 R ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 390 S POS TARG -0.25, null; STIS-FUV-31 -MAMA see below PATTERN 5 2 5 (1580 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-SURFACE- STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 390 S POS TARG +0.2, null; STIS-FUV-31 -MAMA see below PATTERN 14 3 5 (2050 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-FUV 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A -315 IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 none none none 1 395.0 S -315 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 2 none none none 1 395.0 S -315 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 3 none none none 1 395.0 S -315 -MAMA IO-SURFACE-STIS-FUV 2 STIS/FUV ACCUM 52X0.2D1 G140L 1425 4 none none none 1 395.0 S -315 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 1 none none none 2 410.0 S -315 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 2 none none none 2 410.0 S -315 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 3 none none none 2 410.0 S -315 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 4 none none none 2 410.0 S -315 -MAMA IO-SURFACE-STIS-FUV 3 STIS/FUV ACCUM 52X0.2D1 G140L 1425 5 none none none 2 410.0 S -315 -MAMA 17470(101) - 31-Dec-2025 15:53:11 - [177] Visit: 86 (Io Surface COS Leading) Visit Requirements: SCHED 100%; BETWEEN 16-SEP-2024:10:35:00 AND 16-SEP-2024:13:05:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) COS-LEADING RCH CENTER=FLUX-WT-FLR Comments: This acquisition mode/setup was used successfully used in program 15147 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- COS/FUV TIME-TA PSA G130M 1055 BUFFER-TIME=1000, FP-POS=ALL, 1 30 S COS-LEADING G SEGMENT=BOTH see below (1298 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-SURFACE- COS/FUV TIME-TA PSA G130M 1055 BUFFER-TIME=1000, FP-POS=ALL, 1 300 S COS-LEADING G SEGMENT=BOTH see below (1932 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-COS-LEAD 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A ING RCH IO-SURFACE-COS-LEAD 2 COS/FUV TIME-TA PSA G130M 1055 none none none 1 1 464.0 S ING G IO-SURFACE-COS-LEAD 2 COS/FUV TIME-TA PSA G130M 1055 none none none 2 1 278.0 S ING G IO-SURFACE-COS-LEAD 2 COS/FUV TIME-TA PSA G130M 1055 none none none 3 1 278.0 S ING G IO-SURFACE-COS-LEAD 2 COS/FUV TIME-TA PSA G130M 1055 none none none 4 1 278.0 S ING G IO-SURFACE-COS-LEAD 3 COS/FUV TIME-TA PSA G130M 1055 none none none 1 2 483.0 S ING G IO-SURFACE-COS-LEAD 3 COS/FUV TIME-TA PSA G130M 1055 none none none 2 2 483.0 S ING G IO-SURFACE-COS-LEAD 3 COS/FUV TIME-TA PSA G130M 1055 none none none 3 2 483.0 S ING G IO-SURFACE-COS-LEAD 3 COS/FUV TIME-TA PSA G130M 1055 none none none 4 2 483.0 S ING G 17470(101) - 31-Dec-2025 15:53:11 - [178] Visit: 87 (Io Surface COS Trailing) Visit Requirements: SCHED 100%; AFTER 02-AUG-2024:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- COS/NUV ACQ/SEA PSA G230L 3000 SCAN-SIZE=3, 1 1 S (1 S) COS-TRAILIN RCH CENTER=FLUX-WT-FLR G Comments: This acquisition mode/setup was used successfully used in program 15147. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- COS/FUV TIME-TA PSA G130M 1055 BUFFER-TIME=1000, 1 30 S COS-TRAILIN G SEGMENT=BOTH, FP-POS=ALL see below G (1316 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-SURFACE- COS/FUV TIME-TA PSA G130M 1055 BUFFER-TIME=1000, FP-POS=ALL, 1 300 S COS-TRAILIN G SEGMENT=BOTH see below G (1920 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-COS-TRAI 1 COS/NUV ACQ/SEA PSA G230L 3000 none none none none 1 N/A LING RCH IO-SURFACE-COS-TRAI 2 COS/FUV TIME-TA PSA G130M 1055 none none none 1 1 329.0 S LING G IO-SURFACE-COS-TRAI 2 COS/FUV TIME-TA PSA G130M 1055 none none none 2 1 329.0 S LING G IO-SURFACE-COS-TRAI 2 COS/FUV TIME-TA PSA G130M 1055 none none none 3 1 329.0 S LING G IO-SURFACE-COS-TRAI 2 COS/FUV TIME-TA PSA G130M 1055 none none none 4 1 329.0 S LING G IO-SURFACE-COS-TRAI 3 COS/FUV TIME-TA PSA G130M 1055 none none none 1 2 480.0 S LING G IO-SURFACE-COS-TRAI 3 COS/FUV TIME-TA PSA G130M 1055 none none none 2 2 480.0 S LING G IO-SURFACE-COS-TRAI 3 COS/FUV TIME-TA PSA G130M 1055 none none none 3 2 480.0 S LING G IO-SURFACE-COS-TRAI 3 COS/FUV TIME-TA PSA G130M 1055 none none none 4 2 480.0 S LING G 17470(101) - 31-Dec-2025 15:53:11 - [179] Visit: 8B (Io Leading STIS VIS (duplicate of visit 80)) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: This is a duplicate of visit 80 with longer science exposures in orbit 1 and the G750L wavecal pushed into occultation. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=25, 1 0.3 S (0.3 GS ACQ SCENARIO BASE1BR; STIS-VIS-LE DIFFUSE-CENTER=GEOMETRIC-CENTE S) SEQ 1-2 NON-INT ADING R Comments: Visit planned for Dec 4, 2023. Io diameter is 1.22 and CHECKBOX thus 1.22/0.05 = 24.4 ~ 25 ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- STIS/CCD ACCUM 52X0.05 G750L 7751 SIZEAXIS2=80, CR-SPLIT=NO, 1 8 S (184 PATTERN 15 2 STIS-VIS-LE WAVECAL=NO S) ADING ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/CCD ACCUM 52X0.05 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CCDFLAT STIS/CCD ACCUM 52X0.05 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-SURFACE- STIS/CCD ACCUM 52X0.05 G430L 4300 SIZEAXIS2=80, CR-SPLIT=NO, 1 20 S (460 SEQ 5 NON-INT; PATTERN STIS-VIS-LE WAVECAL=NO S) 15 5 ADING ------------------------------------------------------------------------------------------------------------------------------------ 6 WAVE STIS/CCD ACCUM 52X0.05 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 1 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 2 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 3 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 4 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 5 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 6 none none none 1 N/A -LEADING 17470(101) - 31-Dec-2025 15:53:11 - [180] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 7 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 8 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 9 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 10 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 11 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 12 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 13 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 14 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 15 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 16 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 17 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 18 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 19 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 20 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 21 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 22 none none none 1 N/A -LEADING IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 23 none none none 1 N/A -LEADING WAVE 3 STIS/CCD ACCUM 52X0.05 G750L 7751 none none none none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X0.05 G750L 7751 none none 1 none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X0.05 G750L 7751 none none 2 none 1 N/A IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 1 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 2 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 3 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 4 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 5 none none none 2 N/A -LEADING 17470(101) - 31-Dec-2025 15:53:11 - [181] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 6 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 7 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 8 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 9 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 10 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 11 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 12 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 13 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 14 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 15 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 16 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 17 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 18 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 19 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 20 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 21 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 22 none none none 2 N/A -LEADING IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 23 none none none 2 N/A -LEADING WAVE 6 STIS/CCD ACCUM 52X0.05 G430L 4300 none none none none 2 N/A 17470(101) - 31-Dec-2025 15:53:11 - [182] Visit: 90 (IO-WFC3-Transit-1) Visit Requirements: SCHED 100%; BETWEEN 28-NOV-2024:13:52:00 AND 28-NOV-2024:14:52:00; BETWEEN 05-DEC-2024:14:29:00 AND 05-DEC-2024:15:29:00 On Hold Comments: Additional Comments: HOPR Repeat of visit 46. Imaging mostly dust absorption at visible wavelengths, transit events near the beginning and end of Cy31 (1-orbit each) are planned with WFC3 filter sets (F225W, F275W, F336W, F343N, F390M, F390W, F467M, F502N, F555W). BEFORE timing requirement replaced with a BETWEEN of Nov 26 to Dec 9. This allows scheduling in 4 transits that are known to work and have no conflicts. - Januszewski If we have a few more seconds to optimize the orbit window then adding time evenly to F225W and F275W will be good. Implementing a 3-pt dither pattern with three exposures per filter setting. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F225W CR-SPLIT=NO 1 45 S (135 SEQ 1-9 NON-INT; PATTERN WFC3 S 2C-SUB S) 11 1-9 Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F275W CR-SPLIT=NO 1 30 S (90 WFC3 S 2C-SUB S) Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. Replace F280N with F275W for better signal quality and bandpass coverage. ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F336W CR-SPLIT=NO 1 3 S (9 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F343N CR-SPLIT=NO 1 6 S (18 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [183] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F390M CR-SPLIT=NO 1 4 S (12 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 6 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F390W CR-SPLIT=NO 1 1 S (3 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 7 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F467M CR-SPLIT=NO 1 1.2 S (3.6 WFC3 S 2C-SUB S) Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 8 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F502N CR-SPLIT=NO 1 3 S (9 S) WFC3 S 2C-SUB Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ 9 IO-TRANSIT- WFC3/UVI ACCUM UVIS2-C51 F547M CR-SPLIT=NO 1 0.5 S (1.5 WFC3 S 2C-SUB S) Comments: Exposures parallel those in Program 17294 OPAL. Offers more complete wavelength coverage with all bands. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-WFC3 1 WFC3/UVI ACCUM UVIS2-C5 F225W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 1 WFC3/UVI ACCUM UVIS2-C5 F225W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 1 WFC3/UVI ACCUM UVIS2-C5 F225W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 2 WFC3/UVI ACCUM UVIS2-C5 F275W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 2 WFC3/UVI ACCUM UVIS2-C5 F275W 2 none none none 1 N/A S 12C-SUB 17470(101) - 31-Dec-2025 15:53:11 - [184] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-TRANSIT-WFC3 2 WFC3/UVI ACCUM UVIS2-C5 F275W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 3 WFC3/UVI ACCUM UVIS2-C5 F336W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 3 WFC3/UVI ACCUM UVIS2-C5 F336W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 3 WFC3/UVI ACCUM UVIS2-C5 F336W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 4 WFC3/UVI ACCUM UVIS2-C5 F343N 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 4 WFC3/UVI ACCUM UVIS2-C5 F343N 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 4 WFC3/UVI ACCUM UVIS2-C5 F343N 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 5 WFC3/UVI ACCUM UVIS2-C5 F390M 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 5 WFC3/UVI ACCUM UVIS2-C5 F390M 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 5 WFC3/UVI ACCUM UVIS2-C5 F390M 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 6 WFC3/UVI ACCUM UVIS2-C5 F390W 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 6 WFC3/UVI ACCUM UVIS2-C5 F390W 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 6 WFC3/UVI ACCUM UVIS2-C5 F390W 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 7 WFC3/UVI ACCUM UVIS2-C5 F467M 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 7 WFC3/UVI ACCUM UVIS2-C5 F467M 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 7 WFC3/UVI ACCUM UVIS2-C5 F467M 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 8 WFC3/UVI ACCUM UVIS2-C5 F502N 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 8 WFC3/UVI ACCUM UVIS2-C5 F502N 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 8 WFC3/UVI ACCUM UVIS2-C5 F502N 3 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 9 WFC3/UVI ACCUM UVIS2-C5 F547M 1 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 9 WFC3/UVI ACCUM UVIS2-C5 F547M 2 none none none 1 N/A S 12C-SUB IO-TRANSIT-WFC3 9 WFC3/UVI ACCUM UVIS2-C5 F547M 3 none none none 1 N/A S 12C-SUB 17470(101) - 31-Dec-2025 15:53:11 - [185] Visit: 91 (Io Trailing STIS VIS) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: HOPR repeat of visit 81 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-SURFACE- STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=23, 1 0.3 S (0.3 SEQ 1-2 NON-INT STIS-VIS-TR DIFFUSE-CENTER=GEOMETRIC-CENTE S) AILING2 R ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-SURFACE- STIS/CCD ACCUM 52X0.05 G750L 7751 SIZEAXIS2=80, CR-SPLIT=NO, 1 9 S (252 PATTERN 1 2 STIS-VIS-TR WAVECAL=NO S) AILING2 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/CCD ACCUM 52X0.05 G750L 7751 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CCDFLAT STIS/CCD ACCUM 52X0.05 G750L 7751 2 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 IO-SURFACE- STIS/CCD ACCUM 52X0.05 G430L 4300 SIZEAXIS2=80, CR-SPLIT=NO, 1 20 S SEQ 5 NON-INT; PATTERN 1 STIS-VIS-TR WAVECAL=NO see below 5 AILING2 (476 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 WAVE STIS/CCD ACCUM 52X0.05 G430L 4300 1 DEF (0 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 1 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 2 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 3 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 4 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 5 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 6 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 7 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 8 none none none 1 N/A -TRAILING2 17470(101) - 31-Dec-2025 15:53:11 - [186] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 9 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 10 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 11 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 12 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 13 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 14 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 15 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 16 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 17 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 18 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 19 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 20 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 21 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 22 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 23 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 24 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 25 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 26 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 27 none none none 1 N/A -TRAILING2 IO-SURFACE-STIS-VIS 2 STIS/CCD ACCUM 52X0.05 G750L 7751 28 none none none 1 N/A -TRAILING2 WAVE 3 STIS/CCD ACCUM 52X0.05 G750L 7751 none none none none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X0.05 G750L 7751 none none 1 none 1 N/A CCDFLAT 4 STIS/CCD ACCUM 52X0.05 G750L 7751 none none 2 none 1 N/A IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 1 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 2 none none none 2 17.0 S -TRAILING2 17470(101) - 31-Dec-2025 15:53:11 - [187] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 3 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 4 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 5 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 6 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 7 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 8 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 9 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 10 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 11 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 12 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 13 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 14 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 15 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 16 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 17 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 18 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 19 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 20 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 21 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 22 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 23 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 24 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 25 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 26 none none none 2 17.0 S -TRAILING2 17470(101) - 31-Dec-2025 15:53:11 - [188] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 27 none none none 2 17.0 S -TRAILING2 IO-SURFACE-STIS-VIS 5 STIS/CCD ACCUM 52X0.05 G430L 4300 28 none none none 2 17.0 S -TRAILING2 WAVE 6 STIS/CCD ACCUM 52X0.05 G430L 4300 none none none none 2 N/A 17470(101) - 31-Dec-2025 15:53:11 - [189] Visit: 92 (STIS-FUVAURORA-PJ66c) Visit Requirements: SCHED 100%; BETWEEN 05-OCT-2024:04:18:00 AND 05-OCT-2024:05:18:00 On Hold Comments: Additional Comments: HOPR repeat of visit 23 This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2024-10-22 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 J58 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ57 (2024-02-03), Io's diameter is 1.005 arcesc. Thus the checkbox is set to 1.005/0.05 = 21 pixels here. Before Sept. 21 Io checkbox 21. Before Oct. 21 Io checkbox 23. After, 25. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J58 -MAMA G see below (1453 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J58 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J58 -MAMA G see below (2084 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ58 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ58 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1453.0 S -MAMA G IO-AURORA-PJ58 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G IO-AURORA-PJ58 4 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 3 2084.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [190] Visit: 93 (STIS-FUVAURORA-PJ66d) Visit Requirements: SCHED 100%; BETWEEN 21-OCT-2024:00:00:00 AND 24-OCT-2024:00:00:00 On Hold Comments: Additional Comments: HOPR repeat of second orbit from visit 25 This visit is to be scheduled at close in time as possible to the flyby at Io by Juno with clostest approach on 2024-10-22 Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IO-AURORA-P STIS/CCD ACQ F28X50LP MIRROR CHECKBOX=25, ACQTYPE=DIFFUSE, 1 0.1 S (0.1 J59 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R Comments: At the time of PJ59 (2024-03-07), Io's diameter is 0.91 arcesc. Thus the checkbox is set to 0.91/0.05 <= 19 pixels here. ------------------------------------------------------------------------------------------------------------------------------------ 2 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 1400 S POS TARG 0.0, -5.0 J59 -MAMA G see below (1469 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 IO-AURORA-P STIS/FUV TIME-TA 52X2 G140L 1425 BUFFER-TIME=750 1 2200 S POS TARG 0.0, -5.0 J59 -MAMA G see below (2124 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ IO-AURORA-PJ59 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A IO-AURORA-PJ59 2 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 1 1469.0 S -MAMA G IO-AURORA-PJ59 3 STIS/FUV TIME-TA 52X2 G140L 1425 none none none none 2 2124.0 S -MAMA G 17470(101) - 31-Dec-2025 15:53:11 - [191] Summary Form for Proposal 17470 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.05, 52X0.1, 52X0.1E1, 52X0.2D1, 52X0.5, 52X0.5E1, 52X2, 52X2E1, BOA, F25QTZ, F28X50LP, PSA, UVIS2-C512C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV, STIS/CCD, STIS/FUV-MAMA, STIS/NUV-MAMA, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/SEARCH, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ACQTYPE=DIFFUSE, BUFFER-TIME=100, BUFFER-TIME=1000, BUFFER-TIME=120, BUFFER-TIME=128, BUFFER-TIME=750, BUFFER-TIME=99, CENTER=FLUX-WT-FLR, CHECKBOX=17, CHECKBOX=19, CHECKBOX=21, CHECKBOX=23, CHECKBOX=25, CR-SPLIT=2, CR-SPLIT=3, CR-SPLIT=NO, DIFFUSE-CENTER=GEOMETRIC-CENTER, EXTENDED=YES, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, FP-POS=ALL, GAIN=1, SCAN-SIZE=3, SEGMENT=BOTH, SIZEAXIS2=80, WAVECAL=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 40 BY 0 S TO 52 H, AFTER 42 BY 0 S TO 52 H, AFTER 66 BY 0 M TO 52 H, AFTER 02-AUG-2023:00:00:00, AFTER 02-AUG-2024:00:00:00, BEFORE 07-MAR-2024:00:00:00, BETWEEN 01-FEB-2024:06:00:00 AND 01-FEB-2024:07:00:00, BETWEEN 01-FEB-2024:10:00:00 AND 04-FEB-2024:00:00:00, BETWEEN 02-DEC-2024:01:33:00 AND 02-DEC-2024:03:57:00, BETWEEN 04-MAR-2024:00:00:00 AND 10-MAR-2024:00:00:00, BETWEEN 04-NOV-2024:13:05:00 AND 04-NOV-2024:14:05:00, BETWEEN 04-NOV-2024:19:28:00 AND 04-NOV-2024:20:25:00, BETWEEN 05-DEC-2024:14:29:00 AND 05-DEC-2024:15:29:00, BETWEEN 05-NOV-2024:09:35:00 AND 05-NOV-2024:10:35:00, BETWEEN 05-NOV-2024:15:55:00 AND 05-NOV-2024:16:55:00, BETWEEN 05-OCT-2024:04:18:00 AND 05-OCT-2024:05:18:00, BETWEEN 12-SEP-2024:13:15:00 AND 12-SEP-2024:14:15:00, BETWEEN 16-SEP-2024:10:35:00 AND 16-SEP-2024:13:05:00, BETWEEN 17-AUG-2024:00:00:00 AND 20-AUG-2024:00:00:00, BETWEEN 19-SEP-2024:11:15:00 AND 19-SEP-2024:12:10:00, BETWEEN 2024.262:19:20:00 AND 2024.262:20:20:00, BETWEEN 2025.318:20:40:00 AND 2025.318:22:40:00, BETWEEN 2025.324:03:45:00 AND 2025.324:05:15:00, BETWEEN 2025.325:22:14:00 AND 2025.325:23:14:00, BETWEEN 2025.328:22:32:00 AND 2025.328:23:30:00, BETWEEN 2025.329:02:08:00 AND 2025.329:03:08:00, BETWEEN 2025.329:22:04:00 AND 2025.329:23:04:00, BETWEEN 2025.330:01:13:00 AND 2025.330:02:13:00, BETWEEN 2025.333:23:12:00 AND 2025.334:00:12:00, BETWEEN 2025.334:10:00:00 AND 2025.334:11:30:00, BETWEEN 2025.336:02:12:00 AND 2025.336:03:12:00, BETWEEN 2025.336:05:20:00 AND 2025.336:06:20:00, BETWEEN 2025.342:19:00:00 AND 2025.342:20:20:00, BETWEEN 2025.349:20:38:00 AND 2025.349:21:40:00, BETWEEN 2025.358:16:30:00 AND 2025.358:17:30:00, BETWEEN 2025.360:10:55:00 AND 2025.360:11:55:00, BETWEEN 21-DEC-2023:06:00:00 AND 21-DEC-2023:13:30:00, BETWEEN 21-OCT-2024:00:00:00 AND 24-OCT-2024:00:00:00, BETWEEN 21-OCT-2024:08:00:00 AND 24-OCT-2024:22:00:00, BETWEEN 28-NOV-2024:13:52:00 AND 28-NOV-2024:14:52:00, BETWEEN 31-JAN-2024:06:20:00 AND 31-JAN-2024:07:20:00, GROUP 01, 1A WITHIN 8.1 Orbits, GS ACQ SCENARIO BASE1BR, PATTERN 1 2, PATTERN 1 5, PATTERN 10 2, PATTERN 11 1-9, PATTERN 14 3, PATTERN 15 2, PATTERN 15 5, PATTERN 2 3, PATTERN 5 2, PATTERN 6 2, PATTERN 7 2, PATTERN 7 3, POS TARG +0.2, null, POS TARG +0.25, null, POS TARG -0.2, null, POS TARG -0.25, null, POS TARG -3.0, 0, POS TARG -3.0, 3.0, POS TARG -6.0, 0.0, POS TARG -6.0, 6.0, POS TARG 0, 0, POS TARG 0, 10, POS TARG 0, 15, POS TARG 0, 2.5, POS TARG 0, 20, POS TARG 0, 3.0, POS TARG 0, 40, POS TARG 0, 5, POS TARG 0, 6.0, POS TARG 0.0, -5.0, POS TARG 0.0, 0.0, POS TARG 10, 0, POS TARG 2.5, 0, POS TARG 20, 0, POS TARG 40, 0, POS TARG 5, 0, POS TARG 7, -7.0, POS TARG 7.0, -7.0, POS TARG null, -3.0, POS TARG null, -5.0, SCHED 100%, SEQ 1 NON-INT, SEQ 1-2 NON-INT, SEQ 1-3 NON-INT, SEQ 1-9 NON-INT, SEQ 2 NON-INT, SEQ 2-4 NON-INT, SEQ 2-7 NON-INT, SEQ 3 NON-INT, SEQ 5 NON-INT, SEQ 5-7 NON-INT, SEQ 8-13 NON-INT, VISIBILITY INTERVAL 40.6 M ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F225W, F275W, F336W, F343N, F390M, F390W, F467M, F502N, F547M, G130M, G140L, G140M, G225M, G230L, G230LB, G230M, G430L, G430M, G750L, G750M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ 17470(101) - 31-Dec-2025 15:53:11 - [192] Target Names CCDFLAT, EUROPA-ACQ, EUROPA-ACQ2, EUROPA-ACQ3, EUROPA-NCLOUD-EASTANSA, EUROPA-NCLOUD-WESTANSA, IO-AURORA-PJ57, IO-AURORA-PJ58, IO-AURORA-PJ59, IO-AURORA-PJ64, IO-AURORA-PJ66, IO-AURORA-UVS1, IO-AURORA-UVS2-ECLIPSE, IO-AURORA-UVS3, IO-ECLIPSE-EGRESS-COS-NUV, IO-ECLIPSE-INGRESS-COS-NUV, IO-ECLIPSE-STIS-NUV, IO-ECLIPSE-VIS-HALPHA, IO-ECLIPSE-VIS-K, IO-ECLIPSE-VIS-LOKI-SCAN, IO-ECLIPSE-VIS-LOKI-STARE, IO-ECLIPSE-VIS-NA-SCAN, IO-ECLIPSE-VIS-S2, IO-NCLOUD-ANTIJUPITER, IO-NCLOUD-LEADING, IO-NCLOUD-LEADING2, IO-NCLOUD-SUBJUPITER, IO-NCLOUD-TRAILING, IO-NCLOUD-TRAILING-NUV, IO-PLASMATORUS-LEADING, IO-PLASMATORUS-TRAILING, IO-POSTTRANSIT-FUV, IO-POSTTRANSIT-FUV2, IO-SURFACE-COS-LEADING, IO-SURFACE-COS-TRAILING, IO-SURFACE-STIS-FUV-135, IO-SURFACE-STIS-FUV-225, IO-SURFACE-STIS-FUV-315, IO-SURFACE-STIS-FUV-45, IO-SURFACE-STIS-VIS-LEADING, IO-SURFACE-STIS-VIS-TRAILING, IO-SURFACE-STIS-VIS-TRAILING2, IO-TRANSIT-COSNUV, IO-TRANSIT-COSNUV2, IO-TRANSIT-FUV, IO-TRANSIT-FUV2, IO-TRANSIT-NUV4, IO-TRANSIT-STISNUV, IO-TRANSIT-STISNUV2, IO-TRANSIT-WFC3, NCLOUD-EASTANSA, NCLOUD-WESTANSA, WAVE ------------------------------------------------------------------------------------------------------------------------------------