18216( 4) - 26-Mar-2026 18:45:45 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18216 Version: 4 Check-in Time: 26-Mar-2026 18:45:45 STScI Edit Number: 1 Title A Three-Dimensional Panchromatic View of Active Regions and CMEs on the Young Solar-Type Star AB Dor ------------------------------------------------------------------------------------ Type Cycle GO/DD 33 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Kevin France University of Colorado at Boulder Y CoI: Dr. Kosuke Namekata Kyoto University N CoI: Dr. Vladimir Airapetian American University N CoI: Prof. Adina Feinstein Michigan State University N CoI: Dr. Belinda Nicholson University of Southern Queensland N CoI: Prof. Brad Carter University of Southern Queensland N CoI: Dr. Petr Kabath Astronomical Institute, Academy of N Sciences of Czech Rep CoI: Dr. Yusuke Tampo South African Astronomical Observatory N CoI: Dr. Ian Waite University of Southern Queensland N ------------------------------------------------------------------------------------ Abstract The magnetically active regions on young solar-type stars often produce large stellar flares that are likely associated coronal mass ejections (CMEs). These transient phenomena are thought to be key drivers of atmospheric evolution on early Earth-like planets. However, little is known about how stellar active regions are heated, the three-dimensional (3D) struicture, and how CMEs are generated from them. We propose HST/COS observations of a 50 Myr-old solar-type star, AB Dor, to be conducted in coordination with an approved multi-observatory campaign to provide the first multi-wavelength, temporally- and spatially-resolved observations of active regions on a young solar-type star: X-ray spectroscopic observations by XRISM, optical photometry by TESS, and ground-based optical spectroscopic observations. Simultaneous X-ray/UV/optical spectroscopy will allow us to detect Doppler shifts associated with stellar flares, enabling us to capture multi-thermal 3D CME phenomena and assess their true impact on exoplanetary environments for the first time. Furthermore, by performing Doppler imaging across multiple wavelengths capable of resolving the star's rapid rotation, we aim to obtain the first comprehensive 3D view of an active region on a star other than the Sun. In combination with numerical modeling, the proposed program will provide a critical benchmark for understanding stellar active regions and space weather around young solar-type stars, offering high legacy value for studies of planetary habitability in the era of JWST and future UV missions. ------------------------------------------------------------------------------------ Observations Description ------------------------ FUV Spectra: The HST data will use COS with G130M, CENWAVE=1309 to record the emission lines of C III (117.5 nm), Si III (120.6 nm), N V (123.8nm), Fe XII (124.2, 134.9nm), C I (132.9nm), C II (133.5 nm), Fe XXI (135.4nm), O V (137.1nm), O IV] (140.1nm), and Si IV (139.4, 140.3 nm). To resolve the physical processes 18216( 4) - 26-Mar-2026 18:45:45 - [ 2] relevant to chromospheric and coronal heating, we require R ~ 15, 000. To constrain the stellar wind density of EK Dra, we require signal-to-noise ~ 10 at the peak of the O IV] 140.1 nm line. By comparing to archival HST FUV spectra of EK Dra (Ayres & France 2010; Ayres 2015), we estimate that three orbits per visit will be sufficient for detection of S/N > 10 per resolution element in the peak of the density-sensitive O IV] features (COS.sp.1684389). We calculate S/N between 10 and 20 in the peak of several C I lines and the coronal iron lines, S/N between 20 and 30 in Si IV and N V, and S/N > 30 in Si III and C II. This highfidelity spectrum will allow us to identify temporal variability and will provide robust line-fit measurements of thermal and non-thermal widths and line kinematics. Given the observed UV flare rate from EK Dra, we expect to observe 2 - 3 multi-wavelength flares in a 12 orbit HST campaign (3 orbits per visits x 4 visits). Each 3-orbit visit is sufficient for a high-S/N stellar spectrum (see next sub-section) that will provide the quiescent stellar baseline and rotational modulation between flare events. Target Acquisition: We performed a quantitative ETC target acquisition calculation using the STScI online tools, we scaled observed solar-type star to an average magnitude of V = 7.6, and we find that an exposure time of approximately 3.2s are required (COS.ta.1684394), using an imaging target acquisition in BOA+MIRRORA. Instrument Safety: An ETC calculation using the observed EK Dra Lyman-alpha flux (the brightest stellar line in the FUV spectrum of EK Dra; Ayres et al. 2015), multiplied by 1.5 for conservatism, find no bright object violations using the COS G130M mode (COS.sp.1895208), therefore these observations present no risk to the instrument and are consistent with the COS 2025 observing guidelines. Coordinated Observations: Simultaneous observations from space- and ground-based telescopes using X-ray spectroscopy (NICER), optical spectroscopy/photometry (TESS, Seimei telescope), and radio telescope (GMRT) will complement the HST time. TESS will be pivotal for the calculation of global energies. These observatories have a long record of providing flexible scheduling to provide supporting ground-based observations for approved 18216( 4) - 26-Mar-2026 18:45:45 - [ 3] space-based flare campaigns. ------------------------------------------------------------------------------------ 18216( 4) - 26-Mar-2026 18:45:45 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 V-AB-DOR EXT-STAR, K V-IV RA=05H28M44.8712S +/- 0.1", J2000 V = 6.999 +/- 0.05 DEC=-65D26'55.20" +/- 0.1" Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0060253904473560995 0.15857400000000002 0.0673331 ------------------------------------------------------------------------------------------------------------------------------------ 18216( 4) - 26-Mar-2026 18:45:45 - [ 5] Visit: 01 Visit Requirements: SCHED 100%; BETWEEN 20-DEC-2025:00:00:00 AND 10-FEB-2026:00:00:00 On Hold Comments: Additional Comments: While the observing coordination window for these observations extends through spring 2026, the optimial window is December 29th 2025 to January 4th 2026. If there is anything we can adjust in this program to squeeze into that window, that would be great. 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 V-AB-DOR COS/NUV ACQ/IMA BOA MIRRORA 1 5 S (5 S) GE ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=3, 1 800 S (800 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 3 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=4, 1 935 S (935 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=1, 1 916 S (916 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=2, 1 1200 S G SEGMENT=A (1200 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-AB-DOR 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE V-AB-DOR 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G V-AB-DOR 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 18216( 4) - 26-Mar-2026 18:45:45 - [ 6] Visit: 02 Visit Requirements: SCHED 100%; AFTER 01 BY 0.5 D TO 2.5 D On Hold Comments: Additional Comments: While the observing coordination window for these observations extends through spring 2026, the optimial window is December 29th 2025 to January 4th 2026. If there is anything we can adjust in this program to squeeze into that window, that would be great. 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 V-AB-DOR COS/NUV ACQ/IMA BOA MIRRORA 1 5 S (5 S) GE ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=3, 1 800 S (800 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 3 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=4, 1 935 S (935 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=1, 1 916 S (916 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=2, 1 1200 S G SEGMENT=A (1200 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-AB-DOR 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE V-AB-DOR 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G V-AB-DOR 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 18216( 4) - 26-Mar-2026 18:45:45 - [ 7] Visit: 03 Visit Requirements: SCHED 100%; AFTER 02 BY 0.5 D TO 2.5 D On Hold Comments: Additional Comments: While the observing coordination window for these observations extends through spring 2026, the optimial window is December 29th 2025 to January 4th 2026. If there is anything we can adjust in this program to squeeze into that window, that would be great. 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 V-AB-DOR COS/NUV ACQ/IMA BOA MIRRORA 1 5 S (5 S) GE ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=3, 1 800 S (800 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 3 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=4, 1 935 S (935 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=1, 1 916 S (916 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=2, 1 1200 S G SEGMENT=A (1200 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-AB-DOR 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE V-AB-DOR 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G V-AB-DOR 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 18216( 4) - 26-Mar-2026 18:45:45 - [ 8] Visit: 04 Visit Requirements: SCHED 100%; AFTER 03 BY 0.5 D TO 2.5 D On Hold Comments: Additional Comments: While the observing coordination window for these observations extends through spring 2026, the optimial window is December 29th 2025 to January 4th 2026. If there is anything we can adjust in this program to squeeze into that window, that would be great. 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 V-AB-DOR COS/NUV ACQ/IMA BOA MIRRORA 1 5 S (5 S) GE ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=3, 1 800 S (800 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 3 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=4, 1 935 S (935 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=1, 1 916 S (916 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=2, 1 1200 S G SEGMENT=A (1200 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-AB-DOR 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE V-AB-DOR 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G V-AB-DOR 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 18216( 4) - 26-Mar-2026 18:45:45 - [ 9] Visit: H1 (HOPR) Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: While the observing coordination window for these observations extends through spring 2026, the optimial window is December 29th 2025 to January 4th 2026. If there is anything we can adjust in this program to squeeze into that window, that would be great. Repeat for failed 01 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 V-AB-DOR COS/NUV ACQ/IMA BOA MIRRORA 1 5 S (5 S) GE ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=3, 1 800 S (800 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 3 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=4, 1 935 S (935 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=1, 1 916 S (916 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=2, 1 1200 S G SEGMENT=A (1200 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-AB-DOR 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE V-AB-DOR 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G V-AB-DOR 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 18216( 4) - 26-Mar-2026 18:45:45 - [ 10] Visit: H2 (HOPR) Visit Requirements: SCHED 100%; AFTER H1 BY 0.5 D TO 2.5 D On Hold Comments: Additional Comments: While the observing coordination window for these observations extends through spring 2026, the optimial window is December 29th 2025 to January 4th 2026. If there is anything we can adjust in this program to squeeze into that window, that would be great. Repeat for failed 02 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 V-AB-DOR COS/NUV ACQ/IMA BOA MIRRORA 1 5 S (5 S) GE ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=3, 1 800 S (800 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 3 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=4, 1 935 S (935 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=1, 1 916 S (916 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=2, 1 1200 S G SEGMENT=A (1200 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-AB-DOR 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE V-AB-DOR 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G V-AB-DOR 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 18216( 4) - 26-Mar-2026 18:45:45 - [ 11] Visit: H3 (HOPR) Visit Requirements: SCHED 100%; AFTER H2 BY 0.5 D TO 2.5 D On Hold Comments: Additional Comments: While the observing coordination window for these observations extends through spring 2026, the optimial window is December 29th 2025 to January 4th 2026. If there is anything we can adjust in this program to squeeze into that window, that would be great. Repeat for failed 03 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 V-AB-DOR COS/NUV ACQ/IMA BOA MIRRORA 1 5 S (5 S) GE ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=3, 1 800 S (800 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 3 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=4, 1 935 S (935 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=1, 1 916 S (916 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=2, 1 1200 S G SEGMENT=A (1200 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-AB-DOR 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE V-AB-DOR 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G V-AB-DOR 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 18216( 4) - 26-Mar-2026 18:45:45 - [ 12] Visit: H4 (HOPR) Visit Requirements: SCHED 100%; AFTER H3 BY 0.5 D TO 2.5 D On Hold Comments: Additional Comments: While the observing coordination window for these observations extends through spring 2026, the optimial window is December 29th 2025 to January 4th 2026. If there is anything we can adjust in this program to squeeze into that window, that would be great. Repeat for failed 04 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 V-AB-DOR COS/NUV ACQ/IMA BOA MIRRORA 1 5 S (5 S) GE ------------------------------------------------------------------------------------------------------------------------------------ 2 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=3, 1 800 S (800 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 3 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=4, 1 935 S (935 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 4 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=1, 1 916 S (916 G SEGMENT=A S) ------------------------------------------------------------------------------------------------------------------------------------ 5 V-AB-DOR COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=15000, FP-POS=2, 1 1200 S G SEGMENT=A (1200 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-AB-DOR 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE V-AB-DOR 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G V-AB-DOR 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G V-AB-DOR 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G 18216( 4) - 26-Mar-2026 18:45:45 - [ 13] Summary Form for Proposal 18216 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures BOA, PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=15000, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, SEGMENT=A ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 0.5 D TO 2.5 D, AFTER 02 BY 0.5 D TO 2.5 D, AFTER 03 BY 0.5 D TO 2.5 D, AFTER H1 BY 0.5 D TO 2.5 D, AFTER H2 BY 0.5 D TO 2.5 D, AFTER H3 BY 0.5 D TO 2.5 D, BETWEEN 20-DEC-2025:00:00:00 AND 10-FEB-2026:00:00:00, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G130M, MIRRORA ------------------------------------------------------------------------------------------------------------------------------------ Target Names V-AB-DOR ------------------------------------------------------------------------------------------------------------------------------------