17481( 14) - 24-Jun-2024 14:38:34 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17481 Version: 14 Check-in Time: 24-Jun-2024 14:38:34 STScI Edit Number: 5 Title Discovery of Six Isolated Ultra-Faint Dwarf Galaxy Candidates in the Local Group ------------------------------------------------------------------------------------ Type Cycle GO 31 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Kristen B W McQuinn Space Telescope Science Institute Y CoI: Dr. Yao-Yuan Mao University of Utah N CoI: Prof. Matthew Buckley Rutgers the State University of New Jersey N CoI: Prof. David Shih Rutgers the State University of New Jersey N CoI: Dr. Andrew Eugene Dolphin Raytheon Technologies N CoI: Dr. Roger Cohen Rutgers the State University of New Jersey N ------------------------------------------------------------------------------------ Abstract Ultra-faint dwarf galaxies are the least luminous, most dark matter dominated, and least chemically evolved galaxies known. Detailed studies have shown that their star formation quenched at early times, which is generally thought to be caused by reionization and stellar feedback. Intriguingly, the recently discovered, relatively isolated ultra-faint dwarf, Pegasus W, has had an extended star formation history, suggesting it was not quenched by reionization and contradicting the generally accepted framework that reionization ubiquitously quenches ultra-faint dwarfs. This suggests that, in addition to reionization, environment may play a role in quenching ultra-faint dwarfs. Pegasus W is thought to be the tip-of-the-iceberg of a population of low mass halos in the Local Group at farther distances that have yet to be detected. Indeed, we have found six ultra-faint dwarf galaxy candidates that appear to be in the Local Group, but, similar to Pegasus W, outside the halos of the MW, M31, and the LMC. Here, we propose 1-orbit of HST imaging per target to confirm these systems are bona fide ultra-faint dwarf galaxies and characterize their properties. The data will be of sufficient depth to (i) robustly measure their distances via horizontal branch stars, (ii) determine the systems' structural parameters and total luminosities, and (iii) derive the star formation histories, placing constraints on the quenching timescales. We will explore the role of enviroment in determining their properties via comparison with Pegasus W as well as ultra-faint dwarf galaxies that are satellite galaxies, all as a fuction of distance to a massive host. ------------------------------------------------------------------------------------ Observations Description ------------------------ The observations included ACS/WFC and WFC3/UVIS imaging in the F606W and F814W filters. The data will be used to confirm that the targets are galaxies, measure the distances to the systems from resolved stars (TRGB and/or Horizontal Branch methods), characterize the stellar properites (star formation histories and metallicities), and measure the structural parameters of the galaxies. The parallel pointings will allow us to observe a field region next to our targets. We will thus be able to estimate more precisely the number of background/foreground contaminants present in our ACS fields. 17481( 14) - 24-Jun-2024 14:38:34 - [ 2] Each of the 6 targets will be observed for 1 orbit. We use a 5x5 pixel dither implemented using pos-targ (equivalent to the ACS WFC DITHER LINE pattern #14) to reject cosmic rays and handle hot pixels. The first pointing is executed with both filters in ACS and with both filters in WFC3 parallel fields. After the dither, the observations are then repeated. The exposure time per orbit is split roughly equally between the F606W and F814W filters. In order to obtain 4 exposures in both ACS and WFC3 in one orbit and accomodate buffer dumps during exposures, we have added a special requirement to the visibility intervals, which has been approved via PCR 92614. Each visit is 1-orbit. We have place ORIENT constraints to ensure we maximum coverage of the stellar disk and prevent the galaxy centers from falling in the ACS chip gap, while avoiding nearby bright stars. ------------------------------------------------------------------------------------ 17481( 14) - 24-Jun-2024 14:38:34 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 CETUS-K GALAXY, DWARF RA=01H57M47.4724S, J2000 V = 17 SPHEROIDAL DEC=-13D47'6.54" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 7 CETUS-K-UPDA GALAXY, DWARF RA=01H57M47.0395S, J2000 V = 17 TE SPHEROIDAL DEC=-13D47'18.02" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 LEO-B GALAXY, DWARF RA=11H22M27.3807S, J2000 V = 17 SPHEROIDAL DEC=+05D49'36.16" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 CANES-VENATI GALAXY, DWARF RA=12H17M39.4373S, J2000 V = 17 CI-C SPHEROIDAL DEC=+33D20'49.68" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 4 ERIDANUS-M GALAXY, DWARF RA=04H23M42.1937S, J2000 V = 17 SPHEROIDAL DEC=-35D27'34.22" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 5 VIRGO-S GALAXY, DWARF RA=12H38M35.3510S, J2000 V = 17 SPHEROIDAL DEC=-02D33'15.99" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 6 SCULPTOR-Y GALAXY, DWARF RA=00H57M52.7392S, J2000 V = 17 SPHEROIDAL DEC=-35D51'11.02" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 17481( 14) - 24-Jun-2024 14:38:34 - [ 4] Visit: 01 (CETUS-K) Visit Requirements: ORIENT 84D TO 88 D; VISIBILITY INTERVAL 3267 S On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CETUS-K ACS/WFC ACCUM WFC F606W 1 370 S (370 GS ACQ SCENARIO BASE1B3; S) PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 410 S (410 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CETUS-K ACS/WFC ACCUM WFC F814W 1 670 S (670 PAR 4 WITH 3 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CETUS-K ACS/WFC ACCUM WFC F606W 1 670 S (670 POS TARG 0.247, 0.267; S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 CETUS-K ACS/WFC ACCUM WFC F814W 1 337 S (337 SAME POS AS 5; PAR 8 S) WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F814W FLASH=11 1 410 S (410 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ CETUS-K 1 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S CETUS-K 3 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S CETUS-K 5 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S CETUS-K 7 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 8 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S 17481( 14) - 24-Jun-2024 14:38:34 - [ 5] Visit: 03 (CANES-VENATICI-C) Visit Requirements: ORIENT 250D TO 263 D; ORIENT 276D TO 290 D; VISIBILITY INTERVAL 3260 S On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CANES-VENAT ACS/WFC ACCUM WFC F606W 1 350 S (350 PAR 2 WITH 1 ICI-C S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 410 S (410 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CANES-VENAT ACS/WFC ACCUM WFC F814W 1 670 S (670 PAR 4 WITH 3 ICI-C S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CANES-VENAT ACS/WFC ACCUM WFC F606W 1 670 S (670 POS TARG 0.247, 0.267; ICI-C S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 CANES-VENAT ACS/WFC ACCUM WFC F814W 1 350 S (350 SAME POS AS 5; PAR 8 ICI-C S) WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F814W FLASH=11 1 410 S (410 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ CANES-VENATICI-C 1 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S CANES-VENATICI-C 3 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S CANES-VENATICI-C 5 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S CANES-VENATICI-C 7 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 8 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S 17481( 14) - 24-Jun-2024 14:38:34 - [ 6] Visit: 04 (ERIDANUS-M) Visit Requirements: ORIENT 340D TO 14 D; ORIENT 30D TO 46 D; VISIBILITY INTERVAL 3260 S On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ERIDANUS-M ACS/WFC ACCUM WFC F606W 1 350 S (350 PAR 2 WITH 1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 410 S (410 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ERIDANUS-M ACS/WFC ACCUM WFC F814W 1 670 S (670 PAR 4 WITH 3 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ERIDANUS-M ACS/WFC ACCUM WFC F606W 1 670 S (670 POS TARG 0.247, 0.267; S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ERIDANUS-M ACS/WFC ACCUM WFC F814W 1 350 S (350 SAME POS AS 5; PAR 8 S) WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F814W FLASH=11 1 410 S (410 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ ERIDANUS-M 1 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S ERIDANUS-M 3 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S ERIDANUS-M 5 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S ERIDANUS-M 7 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 8 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S 17481( 14) - 24-Jun-2024 14:38:34 - [ 7] Visit: 05 (VIRGO-S) Visit Requirements: ORIENT 110D TO 120 D; VISIBILITY INTERVAL 3247 S On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 VIRGO-S ACS/WFC ACCUM WFC F606W 1 350 S (350 PAR 2 WITH 1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 410 S (410 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 VIRGO-S ACS/WFC ACCUM WFC F814W 1 670 S (670 PAR 4 WITH 3 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 VIRGO-S ACS/WFC ACCUM WFC F606W 1 670 S (670 POS TARG 0.247, 0.267; S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 VIRGO-S ACS/WFC ACCUM WFC F814W 1 337 S (337 SAME POS AS 5; PAR 8 S) WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F814W FLASH=11 1 410 S (410 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ VIRGO-S 1 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S VIRGO-S 3 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S VIRGO-S 5 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S VIRGO-S 7 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 8 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S 17481( 14) - 24-Jun-2024 14:38:34 - [ 8] Visit: 06 (SCULPTOR-Y) Visit Requirements: ORIENT 188D TO 237 D; ORIENT 6D TO 132 D; VISIBILITY INTERVAL 3260 S On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 SCULPTOR-Y ACS/WFC ACCUM WFC F606W 1 350 S (350 PAR 2 WITH 1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 410 S (410 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SCULPTOR-Y ACS/WFC ACCUM WFC F814W 1 670 S (670 PAR 4 WITH 3 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SCULPTOR-Y ACS/WFC ACCUM WFC F606W 1 670 S (670 POS TARG 0.247, 0.267; S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 SCULPTOR-Y ACS/WFC ACCUM WFC F814W 1 350 S (350 SAME POS AS 5; PAR 8 S) WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F814W FLASH=11 1 410 S S see below (508 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 | ------------------------------------------------------------------------------------------------------------------------------------ SCULPTOR-Y 1 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S SCULPTOR-Y 3 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S SCULPTOR-Y 5 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S SCULPTOR-Y 7 ACS/WFC ACCUM WFC F814W none none none none 1 N/A 17481( 14) - 24-Jun-2024 14:38:34 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ ANY 8 WFC3/UVI ACCUM UVIS F814W none none none none 1 508.0 S S 17481( 14) - 24-Jun-2024 14:38:34 - [ 10] Visit: 07 (LEO-B) Visit Requirements: VISIBILITY INTERVAL 3128 S On Hold Comments: Additional Comments: exposure times adjusted to accomodate reduced gyro mode. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 LEO-B ACS/WFC ACCUM WFC F606W 1 234 S (234 PAR 2 WITH 1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6 1 289 S (289 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 LEO-B ACS/WFC ACCUM WFC F814W 1 670 S (670 PAR 4 WITH 3 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 LEO-B ACS/WFC ACCUM WFC F606W 1 670 S (670 POS TARG 0.247, 0.267; S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 LEO-B ACS/WFC ACCUM WFC F814W 1 337 S (337 SAME POS AS 5; PAR 8 S) WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F814W FLASH=11 1 410 S (410 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ LEO-B 1 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S LEO-B 3 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S LEO-B 5 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S LEO-B 7 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 8 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S 17481( 14) - 24-Jun-2024 14:38:34 - [ 11] Visit: 51 (CETUS-K) Visit Requirements: ORIENT 80D TO 95 D; VISIBILITY INTERVAL 3197 S On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CETUS-K-UPD ACS/WFC ACCUM WFC F606W 1 300 S (300 GS ACQ SCENARIO BASE1B3; ATE S) PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6 1 355 S (355 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CETUS-K-UPD ACS/WFC ACCUM WFC F814W 1 670 S (670 PAR 4 WITH 3 ATE S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CETUS-K-UPD ACS/WFC ACCUM WFC F606W 1 670 S (670 POS TARG 0.247, 0.267; ATE S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 730 S (730 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 CETUS-K-UPD ACS/WFC ACCUM WFC F814W 1 337 S (337 SAME POS AS 5; PAR 8 ATE S) WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F814W FLASH=11 1 410 S (410 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ CETUS-K-UPDATE 1 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S CETUS-K-UPDATE 3 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S CETUS-K-UPDATE 5 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S CETUS-K-UPDATE 7 ACS/WFC ACCUM WFC F814W none none none none 1 N/A ANY 8 WFC3/UVI ACCUM UVIS F814W none none none none 1 N/A S 17481( 14) - 24-Jun-2024 14:38:34 - [ 12] Summary Form for Proposal 17481 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS, WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=11, FLASH=6 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1B3, ORIENT 110D TO 120 D, ORIENT 188D TO 237 D, ORIENT 250D TO 263 D, ORIENT 276D TO 290 D, ORIENT 30D TO 46 D, ORIENT 340D TO 14 D, ORIENT 6D TO 132 D, ORIENT 80D TO 95 D, ORIENT 84D TO 88 D, PAR 2 WITH 1, PAR 4 WITH 3, PAR 6 WITH 5, PAR 8 WITH 7, POS TARG 0.247, 0.267, SAME POS AS 5, VISIBILITY INTERVAL 3128 S, VISIBILITY INTERVAL 3197 S, VISIBILITY INTERVAL 3247 S, VISIBILITY INTERVAL 3260 S, VISIBILITY INTERVAL 3267 S ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names ANY, CANES-VENATICI-C, CETUS-K, CETUS-K-UPDATE, ERIDANUS-M, LEO-B, SCULPTOR-Y, VIRGO-S ------------------------------------------------------------------------------------------------------------------------------------