15507( 5) - 16-Dec-2019 17:11:41 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15507 Version: 5 Check-in Time: 16-Dec-2019 17:11:41 STScI Edit Number: 0 Title Proper Motions of the Crater-Leo Group: Testing the Group Infall Scenario ------------------------------------------------------------------------------------ Type Cycle GO 26 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Sangmo Tony Sohn Space Telescope Science Institute Y CoI: Dr. Marcel Pawlowski Leibniz-Institut fur Astrophysik Potsdam N (AIP) CoI: Dr. Gurtina Besla University of Arizona N CoI: Dr. Roeland P. van der Marel Space Telescope Science Institute N CoI: Prof. Stacy S. McGaugh Case Western Reserve University N ------------------------------------------------------------------------------------ Abstract While substantial progress has been made in studying the dynamical properties of individual Milky Way (MW) satellites, groups of satellites have gained much interests only recently although such groups have long been predicted by cosmological simulations. Testing the picture of group infall requires the identification of candidate systems and measurement of their full 6D phase-space coordinates to assess the validity of a common orbital history. The Crater-Leo group of MW satellites (Crater 1/2, Leo II, IV, and V) constitute the best such candidates. Their numbers, positions, distances, line-of-sight velocities, and star formation histories (SFHs) are all indicative of a common origin. However, proper motion (PM) is the one key ingredient missing to study these valuable objects in great detail. Leo II has existing multi-epoch data in the archive and Leo IV will soon have PMs from our ongoing HST program. We propose to measure the PMs of the other 3 objects that belong to the Crater-Leo Group: Crater 1/2 and Leo V. These PMs will allow us to definitively confirm or rule out associations. There is a high chance that our measurements will identify the first known group of low-mass MW satellites, a key milestone towards ratifying LCDM theory. This finding will revolutionize research in near field cosmology by allowing to study the formation histories of dwarf galaxy having originated from, and interacted with, the same group environment. Regardless of the outcome, the newly defined orbits of these systems will furthermore place powerful constraints on the potential of the MW halo at distances where few probes exist. In Cycle 24, we will obtain first-epoch images for the two galaxies Crater 2 and Leo V. The deep F606W and F814W observations will allow us to create astrometric/photometric catalogs, construct CMDs, and study SFHs of the target galaxies in detail. ------------------------------------------------------------------------------------ Observations Description ------------------------ The final goal of this program is to measure absolute proper motions for 3 target objects: globular cluster Crater 1, and dwarf galaxies Crater 2 and Leo V. In the current Cycle 26 program (GO-15507), we will obtain second-epoch data for Crater 1, Crater 2, and Leo V. We will observe the three target objects using the F606W filter to measure proper motions. Crater 1 and 2 will observed for 3 orbits, and Leo V will be observed for 5 orbits. Each orbit will be split 15507( 5) - 16-Dec-2019 17:11:41 - [ 2] into one short and two long exposures. Individual exposures will be dithered via POS-TARG following a customized dithered pattern . To maximize the time baseline between exisiting first-epoch (Cycle 24) and these second-epoch observations, we added Timing Requirements for all visits. We also added Orientation Requirements for all visits to align with the first-epoch images. ------------------------------------------------------------------------------------ 15507( 5) - 16-Dec-2019 17:11:41 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 CRATER-1 STELLAR CLUSTER, RA=11H36M15.8530S +/- 0.1", J2000 V = 15.8 +/- 0.2 GLOBULAR CLUSTER DEC=-10D51'32.95" +/- 0.1" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 CRATER-2 GALAXY, DWARF RA=11H49M14.4000S +/- 0.1", J2000 V = 12.15 +/- 0.1 ELLIPTICAL, HALO DEC=-18D24'46.80" +/- 0.1" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 LEO-V GALAXY, DWARF RA=11H31M9.6000S +/- 0.1", J2000 V = 16.0 +/- 0.4 SPHEROIDAL, HALO DEC=+02D13'12.00" +/- 0.1" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 15507( 5) - 16-Dec-2019 17:11:41 - [ 4] Visit: 01 (CRATER1-F606W-EP2) Visit Requirements: ORIENT 288.42D TO 289.42 D; AFTER 01-SEP-2019:00:00:00 On Hold Comments: Additional Comments: This is the second-epoch visit for the globular cluster Crater 1. In this visit, we will image Crater 1 using the F606W filter for both primary ACS/WFC and parallel WFC3/UVIS observations. Three orbits are required to complete this visit. Each orbit will consist of one short and two long exposures. To maximize the time baseline between the first-epoch (Nov 2014) and these second-epoch observations, we added Timing Requirements of "After 01-SEP-2019" for this visit. This will ensure that our second-epoch observations are carried as late as possible. We have also added Orient Ranges requirements to align our second-epoch images with the first-epoch ones. We implemented a custom-designed dither pattern via the POS-TARG requirement. 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 CRATER-1 ACS/WFC ACCUM WFC F606W 1 145 S (145 POS TARG 0.0000, 0.0000; S) SEQ 1-6 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CRATER-1 ACS/WFC ACCUM WFC F606W 1 1075 S POS TARG 0.0000, 0.0000; (1075 S) PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 1000 S S (1000 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CRATER-1 ACS/WFC ACCUM WFC F606W 1 1075 S POS TARG 0.1647, 0.0124; (1075 S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 1000 S S (1000 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 CRATER-1 ACS/WFC ACCUM WFC F606W 1 149 S (149 POS TARG 0.3293, 0.0248; S) SEQ 7-12 NON-INT; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CRATER-1 ACS/WFC ACCUM WFC F606W 1 1130 S POS TARG 0.3293, 0.0248; (1130 S) PAR 10 WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 CRATER-1 ACS/WFC ACCUM WFC F606W 1 1130 S POS TARG 0.0747, 0.1294; (1130 S) PAR 12 WITH 11 15507( 5) - 16-Dec-2019 17:11:41 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 12 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 CRATER-1 ACS/WFC ACCUM WFC F606W 1 149 S (149 POS TARG 0.2393, 0.1418; S) SEQ 13-18 NON-INT; PAR 14 WITH 13 ------------------------------------------------------------------------------------------------------------------------------------ 14 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 15 CRATER-1 ACS/WFC ACCUM WFC F606W 1 1130 S POS TARG 0.2393, 0.1418; (1130 S) PAR 16 WITH 15 ------------------------------------------------------------------------------------------------------------------------------------ 16 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 17 CRATER-1 ACS/WFC ACCUM WFC F606W 1 1130 S POS TARG 0.4039, 0.1541; (1130 S) PAR 18 WITH 17 ------------------------------------------------------------------------------------------------------------------------------------ 18 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 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 | ------------------------------------------------------------------------------------------------------------------------------------ CRATER-1 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 CRATER-1 3 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S CRATER-1 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 CRATER-1 7 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S CRATER-1 9 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 10 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S CRATER-1 11 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 12 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S 15507( 5) - 16-Dec-2019 17:11:41 - [ 6] 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 | ------------------------------------------------------------------------------------------------------------------------------------ CRATER-1 13 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 14 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S CRATER-1 15 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 16 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S CRATER-1 17 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 18 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S 15507( 5) - 16-Dec-2019 17:11:41 - [ 7] Visit: 02 (CRATER2-F606W-EP2) Visit Requirements: ORIENT 285.81D TO 286.81 D; AFTER 01-SEP-2019:00:00:00 On Hold Comments: Additional Comments: This is the second-epoch visit for the dwarf galaxy Crater 2. In this visit, we will image Crater 2 using the F606W filter for both primary ACS/WFC and parallel WFC3/UVIS observations. Three orbits are required to complete this visit. Each orbit will consist of one short and two long exposures. To maximize the time baseline between the first-epoch (Dec 2016) and these second-epoch observations, we added Timing Requirements of "After 01-SEP-2019" for this visit. This will ensure that our second-epoch observations are carried as late as possible. We have also added Orient Ranges requirements to align our second-epoch images with the first-epoch ones. We implemented a custom-designed dither pattern via the POS-TARG requirement. 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 CRATER-2 ACS/WFC ACCUM WFC F606W 1 143 S (143 POS TARG 0.0000, 0.0000; S) SEQ 1-6 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1080 S POS TARG 0.0000, 0.0000; (1080 S) PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1080 S POS TARG 0.1647, 0.0124; (1080 S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 CRATER-2 ACS/WFC ACCUM WFC F606W 1 150 S (150 POS TARG 0.3293, 0.0248; S) SEQ 7-12 NON-INT; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1133 S POS TARG 0.3293, 0.0248; (1133 S) PAR 10 WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1133 S POS TARG 0.0747, 0.1294; (1133 S) PAR 12 WITH 11 15507( 5) - 16-Dec-2019 17:11:41 - [ 8] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 12 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 CRATER-2 ACS/WFC ACCUM WFC F606W 1 150 S (150 POS TARG 0.2393, 0.1418; S) SEQ 13-18 NON-INT; PAR 14 WITH 13 ------------------------------------------------------------------------------------------------------------------------------------ 14 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 15 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1133 S POS TARG 0.2393, 0.1418; (1133 S) PAR 16 WITH 15 ------------------------------------------------------------------------------------------------------------------------------------ 16 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 17 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1133 S POS TARG 0.4039, 0.1541; (1133 S) PAR 18 WITH 17 ------------------------------------------------------------------------------------------------------------------------------------ 18 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 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 | ------------------------------------------------------------------------------------------------------------------------------------ CRATER-2 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 CRATER-2 3 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S CRATER-2 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 CRATER-2 7 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S CRATER-2 9 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 10 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S CRATER-2 11 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 12 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S 15507( 5) - 16-Dec-2019 17:11:41 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CRATER-2 13 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 14 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S CRATER-2 15 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 16 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S CRATER-2 17 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 18 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S 15507( 5) - 16-Dec-2019 17:11:41 - [ 10] Visit: 03 (LEOV-F606W-EP2) Visit Requirements: SCHED 80%; ORIENT 83.5D TO 84.5 D; AFTER 01-SEP-2019:00:00:00 On Hold Comments: Additional Comments: This is the second-epoch visit for galaxy LeoV. In this visit, we will image Leo V using the F606W filter for both primary ACS/WFC and parallel WFC3/UVIS observations. Five orbits are required to complete this visit. Each orbit will consist of one short and two long exposures. To maximize the time baseline between the first-epoch (Mar 2017) and these second-epoch observations, we added Timing Requirements of "After 01-SEP-2019" for this visit. This will ensure that our second-epoch observations are carried as late as possible. The Schedulability was reduced to 80 to increase the schedulable windows under the specified Orient ranges. We implemented a custom-designed dither pattern via the POS-TARG requirement. 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-V ACS/WFC ACCUM WFC F606W 1 150 S (150 POS TARG 0.0000, 0.0000; S) SEQ 1-6 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 LEO-V ACS/WFC ACCUM WFC F606W 1 985 S (985 POS TARG 0.0000, 0.0000; S) PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 1000 S S (1000 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 LEO-V ACS/WFC ACCUM WFC F606W 1 985 S (985 POS TARG 0.0654, 0.2574; S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 1000 S S (1000 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 LEO-V ACS/WFC ACCUM WFC F606W 1 150 S (150 POS TARG 0.1391, 0.1689; S) SEQ 7-12 NON-INT; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 9 LEO-V ACS/WFC ACCUM WFC F606W 1 1040 S POS TARG 0.1391, 0.1689; (1040 S) PAR 10 WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 LEO-V ACS/WFC ACCUM WFC F606W 1 1040 S POS TARG 0.1550, 0.4225; (1040 S) PAR 12 WITH 11 15507( 5) - 16-Dec-2019 17:11:41 - [ 11] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 12 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 LEO-V ACS/WFC ACCUM WFC F606W 1 150 S (150 POS TARG 0.2177, 0.0857; S) SEQ 13-18 NON-INT; PAR 14 WITH 13 ------------------------------------------------------------------------------------------------------------------------------------ 14 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 15 LEO-V ACS/WFC ACCUM WFC F606W 1 1040 S POS TARG 0.2177, 0.0857; (1040 S) PAR 16 WITH 15 ------------------------------------------------------------------------------------------------------------------------------------ 16 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 17 LEO-V ACS/WFC ACCUM WFC F606W 1 1040 S POS TARG 0.2781, 0.3427; (1040 S) PAR 18 WITH 17 ------------------------------------------------------------------------------------------------------------------------------------ 18 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 19 LEO-V ACS/WFC ACCUM WFC F606W 1 150 S (150 POS TARG 0.3414, 0.1544; S) SEQ 19-24 NON-INT; PAR 20 WITH 19 ------------------------------------------------------------------------------------------------------------------------------------ 20 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 21 LEO-V ACS/WFC ACCUM WFC F606W 1 1040 S POS TARG 0.3414, 0.1544; (1040 S) PAR 22 WITH 21 ------------------------------------------------------------------------------------------------------------------------------------ 22 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 23 LEO-V ACS/WFC ACCUM WFC F606W 1 1040 S POS TARG 0.3567, 0.2595; (1040 S) PAR 24 WITH 23 ------------------------------------------------------------------------------------------------------------------------------------ 24 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 25 LEO-V ACS/WFC ACCUM WFC F606W 1 150 S (150 POS TARG 0.4216, 0.4178; S) SEQ 25-30 NON-INT; PAR 26 WITH 25 ------------------------------------------------------------------------------------------------------------------------------------ 15507( 5) - 16-Dec-2019 17:11:41 - [ 12] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 26 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 27 LEO-V ACS/WFC ACCUM WFC F606W 1 1040 S POS TARG 0.4216, 0.4178; (1040 S) PAR 28 WITH 27 ------------------------------------------------------------------------------------------------------------------------------------ 28 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 29 LEO-V ACS/WFC ACCUM WFC F606W 1 1040 S POS TARG 0.4802, 0.2787; (1040 S) PAR 30 WITH 29 ------------------------------------------------------------------------------------------------------------------------------------ 30 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 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-V 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-V 3 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S LEO-V 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-V 7 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S LEO-V 9 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 10 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S LEO-V 11 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 12 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S LEO-V 13 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 14 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S LEO-V 15 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 16 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S LEO-V 17 ACS/WFC ACCUM WFC F606W none none none none 3 N/A 15507( 5) - 16-Dec-2019 17:11:41 - [ 13] 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 18 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S LEO-V 19 ACS/WFC ACCUM WFC F606W none none none none 4 N/A ANY 20 WFC3/UVI ACCUM UVIS F606W none none none none 4 N/A S LEO-V 21 ACS/WFC ACCUM WFC F606W none none none none 4 N/A ANY 22 WFC3/UVI ACCUM UVIS F606W none none none none 4 N/A S LEO-V 23 ACS/WFC ACCUM WFC F606W none none none none 4 N/A ANY 24 WFC3/UVI ACCUM UVIS F606W none none none none 4 N/A S LEO-V 25 ACS/WFC ACCUM WFC F606W none none none none 5 N/A ANY 26 WFC3/UVI ACCUM UVIS F606W none none none none 5 N/A S LEO-V 27 ACS/WFC ACCUM WFC F606W none none none none 5 N/A ANY 28 WFC3/UVI ACCUM UVIS F606W none none none none 5 N/A S LEO-V 29 ACS/WFC ACCUM WFC F606W none none none none 5 N/A ANY 30 WFC3/UVI ACCUM UVIS F606W none none none none 5 N/A S 15507( 5) - 16-Dec-2019 17:11:41 - [ 14] Visit: 52 (CRATER2-F606W-EP2) Visit Requirements: ORIENT 285.81D TO 286.81 D; AFTER 01-SEP-2019:00:00:00 On Hold Comments: Additional Comments: This is the second-epoch visit for the dwarf galaxy Crater 2. In this visit, we will image Crater 2 using the F606W filter for both primary ACS/WFC and parallel WFC3/UVIS observations. Three orbits are required to complete this visit. Each orbit will consist of one short and two long exposures. To maximize the time baseline between the first-epoch (Dec 2016) and these second-epoch observations, we added Timing Requirements of "After 01-SEP-2019" for this visit. This will ensure that our second-epoch observations are carried as late as possible. We have also added Orient Ranges requirements to align our second-epoch images with the first-epoch ones. We implemented a custom-designed dither pattern via the POS-TARG requirement. 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 CRATER-2 ACS/WFC ACCUM WFC F606W 1 143 S (143 POS TARG 0.0000, 0.0000; S) SEQ 1-6 NON-INT; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1080 S POS TARG 0.0000, 0.0000; (1080 S) PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1080 S POS TARG 0.1647, 0.0124; (1080 S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F606W 1 1050 S S (1050 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 CRATER-2 ACS/WFC ACCUM WFC F606W 1 150 S (150 POS TARG 0.3293, 0.0248; S) SEQ 7-12 NON-INT; PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 9 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1133 S POS TARG 0.3293, 0.0248; (1133 S) PAR 10 WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1133 S POS TARG 0.0747, 0.1294; (1133 S) PAR 12 WITH 11 15507( 5) - 16-Dec-2019 17:11:41 - [ 15] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 12 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 CRATER-2 ACS/WFC ACCUM WFC F606W 1 150 S (150 POS TARG 0.2393, 0.1418; S) SEQ 13-18 NON-INT; PAR 14 WITH 13 ------------------------------------------------------------------------------------------------------------------------------------ 14 ANY WFC3/UVI ACCUM UVIS F606W FLASH=6.0 1 150 S (150 S S) ------------------------------------------------------------------------------------------------------------------------------------ 15 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1133 S POS TARG 0.2393, 0.1418; (1133 S) PAR 16 WITH 15 ------------------------------------------------------------------------------------------------------------------------------------ 16 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 17 CRATER-2 ACS/WFC ACCUM WFC F606W 1 1133 S POS TARG 0.4039, 0.1541; (1133 S) PAR 18 WITH 17 ------------------------------------------------------------------------------------------------------------------------------------ 18 ANY WFC3/UVI ACCUM UVIS F606W 1 1100 S S (1100 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 | ------------------------------------------------------------------------------------------------------------------------------------ CRATER-2 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 CRATER-2 3 ACS/WFC ACCUM WFC F606W none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F606W none none none none 1 N/A S CRATER-2 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 CRATER-2 7 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 8 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S CRATER-2 9 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 10 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S CRATER-2 11 ACS/WFC ACCUM WFC F606W none none none none 2 N/A ANY 12 WFC3/UVI ACCUM UVIS F606W none none none none 2 N/A S 15507( 5) - 16-Dec-2019 17:11:41 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CRATER-2 13 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 14 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S CRATER-2 15 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 16 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S CRATER-2 17 ACS/WFC ACCUM WFC F606W none none none none 3 N/A ANY 18 WFC3/UVI ACCUM UVIS F606W none none none none 3 N/A S 15507( 5) - 16-Dec-2019 17:11:41 - [ 17] Summary Form for Proposal 15507 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS, WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=6.0 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01-SEP-2019:00:00:00, ORIENT 285.81D TO 286.81 D, ORIENT 288.42D TO 289.42 D, ORIENT 83.5D TO 84.5 D, PAR 10 WITH 9, PAR 12 WITH 11, PAR 14 WITH 13, PAR 16 WITH 15, PAR 18 WITH 17, PAR 2 WITH 1, PAR 20 WITH 19, PAR 22 WITH 21, PAR 24 WITH 23, PAR 26 WITH 25, PAR 28 WITH 27, PAR 30 WITH 29, PAR 4 WITH 3, PAR 6 WITH 5, PAR 8 WITH 7, POS TARG 0.0000, 0.0000, POS TARG 0.0654, 0.2574, POS TARG 0.0747, 0.1294, POS TARG 0.1391, 0.1689, POS TARG 0.1550, 0.4225, POS TARG 0.1647, 0.0124, POS TARG 0.2177, 0.0857, POS TARG 0.2393, 0.1418, POS TARG 0.2781, 0.3427, POS TARG 0.3293, 0.0248, POS TARG 0.3414, 0.1544, POS TARG 0.3567, 0.2595, POS TARG 0.4039, 0.1541, POS TARG 0.4216, 0.4178, POS TARG 0.4802, 0.2787, SCHED 80%, SEQ 1-6 NON-INT, SEQ 13-18 NON-INT, SEQ 19-24 NON-INT, SEQ 25-30 NON-INT, SEQ 7-12 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names ANY, CRATER-1, CRATER-2, LEO-V ------------------------------------------------------------------------------------------------------------------------------------