0 Assigned ID: 7741 ----- Attempting Submission 1 (Thu Apr 16 22:39:44 GMT 2026) ----- HST Phase I Proposal 7741 successfully submitted. Receipt: # 7741-1 ----- Attempting Submission 2 (Thu Apr 16 22:53:22 GMT 2026) ----- HST Phase I Proposal 7741 successfully submitted. Receipt: # 7741-2 ----- Attempting Submission 3 (Thu Apr 16 22:55:10 GMT 2026) ----- HST Phase I Proposal 7741 successfully submitted. Receipt: # 7741-3 FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser 0 ----- Attempting Submission 1 (Fri Aug 14 17:32:07 GMT 2026) ----- Due to saturation of the star in the F656N and F336W filters after 51.9 s and 67 s, respectively, we are limited to a shorter exposure time. We follow the methods of similar proposals (e.g. Proposal 15830), which were not significantly affected by the short exposures time in regards to the pre-flash. Extending Accretion Studies into the Sub-Jupiter Regime with TWA 7 b Studying accretion rates for young, planetary mass objects is essential for understanding planetary formation and evolution. Currently, the sample size of accreting planetary mass companions is small (~10) and is limited to multi-Jupiter mass planets found within protoplanetary and transitional disks. We propose observing the newly detected planet, TWA 7 b, with WFC3/UVIS to constrain H_alpha and hydrogen continuum emission related to accretion onto the planet from a potential circumplanetary disk. TWA 7 b is the first, directly imaged Saturn mass planet, and is located within a structured debris disk. The location of the planet within a circumstellar disk and the young age of the system (~7 Myr) suggests a high-likelihood of TWA 7 b hosting a circumplanetary disk that may still be actively accreting onto the planet. Thus, TWA 7 b makes the perfect target to further our understanding of accretion rates for planets in the sub-Jupiter regime and directly connecting to the formation of the Solar System gas giants. We will observe the directly imaged Saturn-mass planet, TWA 7 b, with the UVIS instrument in both the F656N and F336W filters. The goal is to place constraints on the potential accretion from a circumplanetary disk through the H_alpha emission and Balmer jump. TWA 7 b is the only sub-Jupiter mass planet in which such accretion measurements can be made, given the system's young age (~6-7 Myr), close distance to Earth (34.1 pc), and lack of other directly imaged exoplanets in this mass range. Based on accretion estimates and sensitivity calculations, we will need ~1 hour of total exposure time in the F656N filter and ~6 hours of total exposure time in the F336W filter to reach the required sensitivity. The 512C-SUB subarray (20'' by 20'') will be used to reduce detector readout time. Since the star saturates at 51.9 s in F656N, we estimate that 40 s exposures is a good trade off between avoiding saturation from the star and limiting readout noise. Therefore, to achieve ~1 hour of total exposure time, we request 36 exposures in the F656N filter over the first 3 orbits (12 exposures per orbit). For the F336W filter, the star saturates in 67 s, we will be using the remaining time over the 20 orbits to obtain 444 50 second exposures for a total integration time of 6.2 hours to roughly match the 6:1 exposure time ratio followed by Zhou et al. 2021, which led to the detection of the Balmer jump for PDS 70 b. We use the preset UVIS-DITHER-BOX dither pattern to improve spatial sampling, a critical requirement for building accurate PSF models to aid in subtraction of the primary star. The 4-dither pattern will be efficient for sampling the PSF and allows us to schedule 12 F656N and/or 12-24 F336W exposures per orbit, which efficiently fills the allowable observation time per orbit. We follow the recommendations in the instrument handbook and require FLASH=12 pre-flash to mitigate potential CTE-loss in the observations. We will be performing reference differential imaging (RDI) using a HST/WFC3 archival PSF library, following the procedure of Sanghi et al. 2019. Given the wide-separation of the planet at 1.5'', RDI alone will be sufficient for PSF subtraction. -Dr. Katie Crotts is an expert in high-contrast imaging of debris disks and exoplanets. She has significant experience in debris disk characterization and the study of planet-disk interactions. She has worked on the reduction and analysis of data obtained from multiple high-contrast instruments, including the Gemini Planet Imager, HST/STIS and JWST/NIRCam. -Dr. Aarynn Carter is an expert in high-contrast imaging of exoplanets. He is the lead of several awarded NIRCam surveys searching for sub-Jupiter mass planets around nearby systems. -Dr. Emily Rickman has expertise in high-contrast imaging observations of substellar companions both from the ground (VLT/SPHERE) and space (as a HST/STIS team member and with JWST) in coronagraphy and spectroscopy. She is a project level member of the JWST telescope scientist team for coronagraphic imaging, Principal Investigator for a JWST NIRSpec/IFU medium program, and co-lead for the spectroscopic component of the JWST high-contrast imaging ERS team working with JWST/NIRSpec IFU data. -Co-I Sutlieff is an expert in exoplanet and brown dwarf imaging and atmospheric characterisation, with experience in working with both ground-based and JWST imaging data. -Raphael Bendahan-West has expertise in calibrating, reducing and analysing direct imaging observations with NIRCam and MIRI coronagraphic data. He also has expertise in observational and theoretical study in debris discs systems, including planet-disc interactions. -Beth Biller is an expert on detection and characterization of self-luminous giant exoplanets. -Dr. Giovanni Strampelli is and expert in straKLIP, data reduction and analysis, and PSF subtraction of direct imaging data. -Dr. Isabel Rebollido is an expert with NIRSpec disk spectra and data analysis. -Dr. Mark Booth is an expert in debris disc and planet-disc interactions. -James Mang is an expert in modeling and characterizing brown dwarf and giant planet atmospheres, especially cold objects with strong disequilibrium chemistry and potential presence of clouds. -William Balmer is an expert in NIRCam coronagraphy ETC, observational planning, and data reduction. -Evelyn Bruinsma is an expert in high contrast imaging of exoplanets. -Dr. Aniket Sanghi is an expert in high-contrast imaging of exoplanets. -Dr. Brendan Bowler is an expert on high-contrst direct imaging observations of giant planets. Dr. Bowler has multiple discoveries of planetary mass companions. Dr. Bowler is an assistant professor at UT Austin. -Lillian Jiang is an expert on measuring accretion rates for exoplanets/protoplanets. -Dr. Yifan Zhou is an expert on HST/WFC3 high-contrast direct imaging observations, and has led three first-author paper on this topic: Zhou et al. (2014), (2016), and (2019). Zhou et al. (2014) used HST/WFC3/UVIS to study the accretion processes of planetary-mass companions. Mr. Zhou is a 5th year graduate student at the University of Arizona and is going to be a McDonald Fellow at UT Austin. -Dr. Michael Meyer is an expert in high-contrast imaging of exoplanets. -Dr. Kellen Lawson is an expert on high-contrast imaging of exoplanets and debris disks. He is also an expert in data reduction of high-contrast observations. -Klaus Subbotina Stephenson is an expert in high-contrast imaging of exoplanets and instrumentation. -Dr. Kimberly Ward-Duong is an expert in high-contrast imaging and spectroscopy of exoplanets and brown-dwarfs. She is also an expert in measuring accretion rates for exoplanets/brown dwarfs. -Claire Finley is an expert in WFC3 imaging of exoplanets and measuring accretion rates. Exoplanets and Exoplanet Formation 6 false false false false false false false SUPPORTED STAR DISK EXTRA-SOLAR PLANETARY SYSTEM M III-I J2000 J2000 WFC3/UVIS Imaging No No F656N WFC3/UVIS Imaging No No F336W POS-TARG DITHER 0.173 LINE 0.112 false false 81.785 4 23.884 WFC3-UVIS-DITHER-BOX 3 false The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "01" :proposal-version -1 :trans-version "20260618" :date "11-Aug-2026 10:55:37.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "01" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2661 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "02" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:33.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "02" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2661 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "03" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:21.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "03" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2661 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "04" :proposal-version -1 :trans-version "20260618" :date "11-Aug-2026 11:06:35.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "04" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "05" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:34.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "05" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "06" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:34.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "06" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "07" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:35.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "07" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "08" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:36.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "08" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "09" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:37.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "09" :obset-id "09" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "09" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "10" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:38.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "10" :obset-id "10" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "10" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "11" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:39.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "11" :obset-id "11" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "11" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "12" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:41.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "12" :obset-id "12" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "12" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "13" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:42.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "13" :obset-id "13" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "13" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "14" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "14" :obset-id "14" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "14" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "15" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:44.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "15" :obset-id "15" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "15" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "16" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:45.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "16" :obset-id "16" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "16" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "17" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:46.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "17" :obset-id "17" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "17" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "18" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:47.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "18" :obset-id "18" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "18" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "19" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:48.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "19" :obset-id "19" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "19" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18376 :visit-id "20" :proposal-version -1 :trans-version "20260618" :date "14-Aug-2026 09:10:49.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 109840 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18376 :visit-id "20" :obset-id "20" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18376 :visit-id "20" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2611 :al-overhead-at-end 47 :internal-dur-at-end 157 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) true 1 0