17142( 15) - 24-Jun-2024 15:14:55 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17142 Version: 15 Check-in Time: 24-Jun-2024 15:14:55 STScI Edit Number: 9 Title Europa's UV absorptions: oceanic or exogenic origins? ------------------------------------------------------------------------------------ Type Cycle GO 30 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Samantha Trumbo Cornell University Y CoI: Dr. Michael E Brown California Institute of Technology N CoI: Dr. Tracy M Becker Southwest Research Institute N CoI: Dr. Pippa Molyneux Southwest Research Institute N ------------------------------------------------------------------------------------ Abstract Recently resurfaced terrain on Europa may contain compositional fingerprints of the internal ocean, providing a window into its chemistry and habitability. However, understanding the relationship between the surface and subsurface chemistries relies on distinguishing endogenic species from those produced via the exogenic bombardment of the surface with Jovian magnetospheric particles. Over the past 20+ years, numerous studies have sought to disentangle the two, but have been stymied by either a lack of spectral features across the wavelengths explored, a lack of sufficient spatial resolution to discern geology from background magnetospheric patterns, or both. High-spatial-resolution observations in the mid-UV would provide a singular opportunity to build our understanding of these contributions to Europa's surface, which will soon be visited by two Flagship-class spacecraft missions--NASA's Europa Clipper and ESA's JUICE. Two of Europa's fewer than ten compositionally diagnostic absorption features (other than those of water ice) lie at mid-UV wavelengths, including the only feature indicative of the plausibly endogenic SO2 and a feature newly discovered this year that could indicate endogenic salt or an exogenic radiolytic product. We propose a simple slit-scanning program with STIS in G230L to map these features at the high spatial resolution necessary to determine their origins. As neither spacecraft mission carries instrumentation spanning these wavelengths, HST provides the only opportunity to map Europa across this critical wavelength range, thereby enhancing the scientific return of the upcoming missions. ------------------------------------------------------------------------------------ Observations Description ------------------------ Using STIS, we plan to create a uniform dataset of spatially resolved UV (G230L) spectra of the surface of Europa. We plan to replicate previously successful G430L and G750L Europa programs as closely as possible. Four separate phases of Europa will be observed to allow complete longitudinal coverage. Four observations spaced 90 degrees apart ensure that the worst resolution along the equator will be degraded by only ~40% relative to the sub-observer point. The past programs on which we base our observations used the 0.1" slit and stepped it across the surface in 0.06" increments over four Europa phases, for a total of 15 overlapping slit positions per phase. We propose to execute an analogous program in G230L to achieve the same spatial resolution and global coverage at UV wavelengths, thereby resolving any correlations of the UV absorption features with geology. 17142( 15) - 24-Jun-2024 15:14:55 - [ 2] To ensure that our planned exposures will obtain the signal-to-noise ratio (SNR) necessary to achieve our science goals, we scale from the existing archival G230L observations of Europa. We set our SNR requirements based on our science goal of mapping the 230-nm feature, which is weaker than the SO2 absorption and falls in a noisier portion of the spectrum. Spectra that meet this requirement will thus be more than adequate to map the SO2 absorption. Based on the variability in the 230-nm band strength that we observe in the existing G230L data, we estimate a need to detect absorptions with an equivalent width of 3 nm to 5 sigma in order to adequately measure the geographic distribution. As the G230L spectra provide ~275 points across the 40-nm FWHM of the absorption feature, this equates to a required SNR of ~4 per pixel. Using 800-second exposures in the 0.2" slit, the existing G230L spectra achieved a SNR of 10 per pixel across the 230-nm region. Scaling directly from this measurement, we can achieve a SNR of 5 per pixel (half that of the current observations and beyond our calculated requirement of 4 per pixel) using the 0.1" slit, at least 200-second integrations, and 2-pixel extractions (resulting in the same effective pixel scale as the past G430L observations). We plan our program in 4 two-orbit visits (one visit per phase; two orbits to map the entire disk each time). We break up the slit-scan of the disk each visit into two separate patterns: a 7-slit pattern covering slightly less than half of the disk to be executed in the first orbit of a visit, which has less science time due to target acquisition, and a 9-slit pattern covering slightly more than half of the disk to be executed in the second orbit of a visit. In the exposure sequence corresponding to each pattern within the visits, we specify the necessary target offsets, such that the 7-slit pattern begins at the edge of the disk and the 9-slit pattern begins where the 7-slit pattern left off, thereby completing coverage of the disk over the 16 total slit positions. To maximize time dedicated to science exposures, we place the necessary wavecals at the end of each orbit, so that they are pushed into occultation. In the event of reduced-gyro operations, the main impacts to this program are expected to be reduced schedulability, as these observations are already time-constrained, and increased overheads for target acquisition, resulting in reduced science exposure times. ------------------------------------------------------------------------------------ 17142( 15) - 24-Jun-2024 15:14:55 - [ 3] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 TARGET NAME: EUROPA-45 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE SATELLITE EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF EUROPA-45 BY JUPITER FROM EARTH, SEP OF EUROPA-45 IO FROM EARTH GT 17.5", SEP OF EUROPA-45 GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-45 CALLISTO FROM EARTH GT 10", CML OF EUROPA-45 FROM EARTH BETWEEN 33 57 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.15 Centered near phase = 45 degrees (45 W longitude) Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 5 TARGET NAME: EUROPA-45-2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE SATELLITE EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF EUROPA-45-2 BY JUPITER FROM EARTH, SEP OF EUROPA-45-2 IO FROM EARTH GT 17.5", SEP OF EUROPA-45-2 GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-45-2 CALLISTO FROM EARTH GT 10", CML OF EUROPA-45 FROM EARTH BETWEEN 33 57 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.15 Centered near phase = 45 degrees (45 W longitude) Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17142( 15) - 24-Jun-2024 15:14:55 - [ 4] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 2 TARGET NAME: EUROPA-135 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE SATELLITE EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF EUROPA-135 BY JUPITER FROM EARTH, SEP OF EUROPA-135 IO FROM EARTH GT 10", SEP OF EUROPA-135 GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-135 CALLISTO FROM EARTH GT 10", CML OF EUROPA-135 FROM EARTH BETWEEN 127.5 142.5 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.15 Centered near phase = 135 degrees (135 W longitude) Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 3 TARGET NAME: EUROPA-225 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE SATELLITE EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF EUROPA-225 BY JUPITER FROM EARTH, SEP OF EUROPA-225 IO FROM EARTH GT 17.5", SEP OF EUROPA-225 GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-225 CALLISTO FROM EARTH GT 10", CML OF EUROPA-225 FROM EARTH BETWEEN 215 235 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.15 Centered near phase =225 degrees (225 W longitude) Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17142( 15) - 24-Jun-2024 15:14:55 - [ 5] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 4 TARGET NAME: EUROPA-315 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE SATELLITE EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF EUROPA-315 BY JUPITER FROM EARTH, SEP OF EUROPA-315 IO FROM EARTH GT 17.5", SEP OF EUROPA-315 GANYMEDE FROM EARTH GT 10", SEP OF EUROPA-315 CALLISTO FROM EARTH GT 10", CML OF EUROPA-315 FROM EARTH BETWEEN 305 325 ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 5.2 +/- 0.15 Centered near phase = 315 degrees (315 W longitude) Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17142( 15) - 24-Jun-2024 15:14:55 - [ 6] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 7 Point_Spacing 0.06 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type STIS-PERP-TO-SLIT Pattern_Purpose MOSAIC Number_Of_Points 9 Point_Spacing 0.06 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 0.0 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 17142( 15) - 24-Jun-2024 15:14:55 - [ 7] Visit: 01 (EUROPA-45) Visit Requirements: PCS MODE FINE; BETWEEN 01-OCT-2022:00:00:00 AND 01-JAN-2023:00:00:00; BETWEEN 01-SEP-2023:00:00:00 AND 30-SEP-2023:00:00:00; VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET On Hold Comments: Additional Comments: Timing windows are chosen such that Europa's angular size is near its maximum of ~1 arcsecond, in order to maximize spatial resolution, which is key to our science goals. 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-45 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=21, 1 0.1 S (0.1 SEQ 1-2 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA-45 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 234 S POS TARG -0.45, 0; -MAMA (1638 S) PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 EUROPA-45 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 235 S POS TARG -0.03, 0; SEQ 4 -MAMA (2115 S) NON-INT; PATTERN 3 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-45 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A EUROPA-45 2 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 1 N/A -MAMA EUROPA-45 2 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 1 N/A -MAMA EUROPA-45 2 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 1 N/A -MAMA EUROPA-45 2 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 1 N/A -MAMA EUROPA-45 2 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 1 N/A -MAMA EUROPA-45 2 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 1 N/A -MAMA EUROPA-45 2 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 1 N/A -MAMA WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 8] 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-45 4 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 2 N/A -MAMA EUROPA-45 4 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 2 N/A -MAMA EUROPA-45 4 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 2 N/A -MAMA EUROPA-45 4 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 2 N/A -MAMA EUROPA-45 4 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 2 N/A -MAMA EUROPA-45 4 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 2 N/A -MAMA EUROPA-45 4 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 2 N/A -MAMA EUROPA-45 4 STIS/NUV ACCUM 52X0.1 G230L 2376 8 none none none 2 N/A -MAMA EUROPA-45 4 STIS/NUV ACCUM 52X0.1 G230L 2376 9 none none none 2 N/A -MAMA WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 9] Visit: 02 (EUROPA-135) Visit Requirements: PCS MODE FINE; BETWEEN 01-OCT-2022:00:00:00 AND 30-NOV-2022:00:00:00; BETWEEN 01-SEP-2023:00:00:00 AND 30-SEP-2023:00:00:00; VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET On Hold Comments: Additional Comments: Timing windows are chosen such that Europa's angular size is near its maximum of ~1 arcsecond, in order to maximize spatial resolution, which is key to our science goals. 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-135 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=21, 1 0.1 S (0.1 SEQ 1-2 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA-135 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 234 S POS TARG -0.45, 0; -MAMA (1638 S) PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 EUROPA-135 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 235 S POS TARG -.03, 0; SEQ 4 -MAMA (2115 S) NON-INT; PATTERN 3 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-135 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A EUROPA-135 2 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 1 N/A -MAMA EUROPA-135 2 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 1 N/A -MAMA EUROPA-135 2 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 1 N/A -MAMA EUROPA-135 2 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 1 N/A -MAMA EUROPA-135 2 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 1 N/A -MAMA EUROPA-135 2 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 1 N/A -MAMA EUROPA-135 2 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 1 N/A -MAMA WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 10] 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-135 4 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 2 N/A -MAMA EUROPA-135 4 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 2 N/A -MAMA EUROPA-135 4 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 2 N/A -MAMA EUROPA-135 4 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 2 N/A -MAMA EUROPA-135 4 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 2 N/A -MAMA EUROPA-135 4 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 2 N/A -MAMA EUROPA-135 4 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 2 N/A -MAMA EUROPA-135 4 STIS/NUV ACCUM 52X0.1 G230L 2376 8 none none none 2 N/A -MAMA EUROPA-135 4 STIS/NUV ACCUM 52X0.1 G230L 2376 9 none none none 2 N/A -MAMA WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 11] Visit: 03 (EUROPA-225) Visit Requirements: PCS MODE FINE; BETWEEN 01-OCT-2022:00:00:00 AND 01-JAN-2023:00:00:00; BETWEEN 01-SEP-2023:00:00:00 AND 30-SEP-2023:00:00:00; VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET On Hold Comments: Additional Comments: Timing windows are chosen such that Europa's angular size is near its maximum of ~1 arcsecond, in order to maximize spatial resolution, which is key to our science goals. 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-225 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=21, 1 0.1 S (0.1 SEQ 1-2 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA-225 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 234 S POS TARG -0.45, 0; -MAMA (1638 S) PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 EUROPA-225 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 235 S POS TARG -.03, 0; SEQ 4 -MAMA (2115 S) NON-INT; PATTERN 3 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-225 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A EUROPA-225 2 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 1 N/A -MAMA EUROPA-225 2 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 1 N/A -MAMA EUROPA-225 2 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 1 N/A -MAMA EUROPA-225 2 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 1 N/A -MAMA EUROPA-225 2 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 1 N/A -MAMA EUROPA-225 2 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 1 N/A -MAMA EUROPA-225 2 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 1 N/A -MAMA WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 12] 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-225 4 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 2 N/A -MAMA EUROPA-225 4 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 2 N/A -MAMA EUROPA-225 4 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 2 N/A -MAMA EUROPA-225 4 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 2 N/A -MAMA EUROPA-225 4 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 2 N/A -MAMA EUROPA-225 4 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 2 N/A -MAMA EUROPA-225 4 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 2 N/A -MAMA EUROPA-225 4 STIS/NUV ACCUM 52X0.1 G230L 2376 8 none none none 2 N/A -MAMA EUROPA-225 4 STIS/NUV ACCUM 52X0.1 G230L 2376 9 none none none 2 N/A -MAMA WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 13] Visit: 04 (EUROPA-315) Visit Requirements: PCS MODE FINE; BETWEEN 01-OCT-2022:00:00:00 AND 01-JAN-2023:00:00:00; BETWEEN 01-SEP-2023:00:00:00 AND 30-SEP-2023:00:00:00; VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET On Hold Comments: Additional Comments: Timing windows are chosen such that Europa's angular size is near its maximum of ~1 arcsecond, in order to maximize spatial resolution, which is key to our science goals. 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-315 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=21, 1 0.1 S (0.1 SEQ 1-2 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA-315 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 234 S POS TARG -0.45, 0; -MAMA (1638 S) PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 EUROPA-315 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 235 S POS TARG -.03, 0; SEQ 4 -MAMA (2115 S) NON-INT; PATTERN 3 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-315 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A EUROPA-315 2 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 1 N/A -MAMA EUROPA-315 2 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 1 N/A -MAMA EUROPA-315 2 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 1 N/A -MAMA EUROPA-315 2 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 1 N/A -MAMA EUROPA-315 2 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 1 N/A -MAMA EUROPA-315 2 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 1 N/A -MAMA EUROPA-315 2 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 1 N/A -MAMA WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 14] 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-315 4 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 2 N/A -MAMA EUROPA-315 4 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 2 N/A -MAMA EUROPA-315 4 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 2 N/A -MAMA EUROPA-315 4 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 2 N/A -MAMA EUROPA-315 4 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 2 N/A -MAMA EUROPA-315 4 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 2 N/A -MAMA EUROPA-315 4 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 2 N/A -MAMA EUROPA-315 4 STIS/NUV ACCUM 52X0.1 G230L 2376 8 none none none 2 N/A -MAMA EUROPA-315 4 STIS/NUV ACCUM 52X0.1 G230L 2376 9 none none none 2 N/A -MAMA WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 15] Visit: 05 (EUROPA-45) Visit Requirements: PCS MODE FINE; VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET On Hold Comments: Additional Comments: Timing windows are chosen such that Europa's angular size is near its maximum of ~1 arcsecond, in order to maximize spatial resolution, which is key to our science goals. 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-45-2 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=21, 1 0.1 S (0.1 SEQ 1-2 NON-INT DIFFUSE-CENTER=GEOMETRIC-CENTE S) R ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA-45-2 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 200 S POS TARG -0.45, 0; -MAMA (1400 S) PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 EUROPA-45-2 STIS/NUV ACCUM 52X0.1 G230L 2376 WAVECAL=NO 1 200 S POS TARG -0.03, 0; SEQ 4 -MAMA (1800 S) NON-INT; PATTERN 3 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/NUV ACCUM 52X0.1 G230L 2376 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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-45-2 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A EUROPA-45-2 2 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 1 N/A -MAMA EUROPA-45-2 2 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 1 N/A -MAMA EUROPA-45-2 2 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 1 N/A -MAMA EUROPA-45-2 2 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 1 N/A -MAMA EUROPA-45-2 2 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 1 N/A -MAMA EUROPA-45-2 2 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 1 N/A -MAMA EUROPA-45-2 2 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 1 N/A -MAMA WAVE 3 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 1 N/A -MAMA EUROPA-45-2 4 STIS/NUV ACCUM 52X0.1 G230L 2376 1 none none none 2 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 16] 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-45-2 4 STIS/NUV ACCUM 52X0.1 G230L 2376 2 none none none 2 N/A -MAMA EUROPA-45-2 4 STIS/NUV ACCUM 52X0.1 G230L 2376 3 none none none 2 N/A -MAMA EUROPA-45-2 4 STIS/NUV ACCUM 52X0.1 G230L 2376 4 none none none 2 N/A -MAMA EUROPA-45-2 4 STIS/NUV ACCUM 52X0.1 G230L 2376 5 none none none 2 N/A -MAMA EUROPA-45-2 4 STIS/NUV ACCUM 52X0.1 G230L 2376 6 none none none 2 N/A -MAMA EUROPA-45-2 4 STIS/NUV ACCUM 52X0.1 G230L 2376 7 none none none 2 N/A -MAMA EUROPA-45-2 4 STIS/NUV ACCUM 52X0.1 G230L 2376 8 none none none 2 N/A -MAMA EUROPA-45-2 4 STIS/NUV ACCUM 52X0.1 G230L 2376 9 none none none 2 N/A -MAMA WAVE 5 STIS/NUV ACCUM 52X0.1 G230L 2376 none none none none 2 N/A -MAMA 17142( 15) - 24-Jun-2024 15:14:55 - [ 17] Summary Form for Proposal 17142 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.1, F28X50LP ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ACQTYPE=DIFFUSE, CHECKBOX=21, DIFFUSE-CENTER=GEOMETRIC-CENTER, WAVECAL=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 01-OCT-2022:00:00:00 AND 01-JAN-2023:00:00:00, BETWEEN 01-OCT-2022:00:00:00 AND 30-NOV-2022:00:00:00, BETWEEN 01-SEP-2023:00:00:00 AND 30-SEP-2023:00:00:00, PATTERN 2 2, PATTERN 3 4, PCS MODE FINE, POS TARG -.03, 0, POS TARG -0.03, 0, POS TARG -0.45, 0, SEQ 1-2 NON-INT, SEQ 4 NON-INT, VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G230L, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names EUROPA-135, EUROPA-225, EUROPA-315, EUROPA-45, EUROPA-45-2, WAVE ------------------------------------------------------------------------------------------------------------------------------------