12937( 7) - 13-Dec-2013 13:48:45 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12937 Version: 7 Check-in Time: 13-Dec-2013 13:48:45 STScI Edit Number: 3 Title Direct Confirmation of Intracluster Stars as SN Ia Progenitors ------------------------------------------------------------------------------------ Type Cycle GO 20 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Dennis Zaritsky University of Arizona Y CoI: Dr. Melissa Lynn Graham University of California - Santa Barbara Y CoI: Prof. David J. Sand Texas Tech University N CoI: Dr. Christopher J. Pritchet University of Victoria N ------------------------------------------------------------------------------------ Abstract To help resolve the progenitor problem for Type Ia supernovae (SNe Ia) and ensure their dependability as cosmological standard candles, we seek direct confirmation that SNe Ia explode in >2 Gyr old stellar populations. The Multi-Epoch Nearby Cluster Survey (MENeaCS) monitored 60 low redshift, rich galaxy clusters for two years, and spectroscopically confirmed four apparently hostless cluster SNe Ia. The intracluster medium hosts a purer population of old stars than elliptical galaxies, which have been shown to often harbor low levels of star formation. We propose to obtain deep HST images at the locations of these four SNe Ia (now faded), to confirm that they are truly associated with the population of intracluster stars, and not hosted by a faint cluster galaxy or globular cluster. This proposal will also provide the necessary support for the use of IC SNe - as bright representatives of IC stars - in determining the fraction of IC stellar mass and light, which has low surface brightness and is difficult to measure directly. The required observations are only possible with HST, which has both the necessary resolution to limit contamination from background sources, and the sensitivity to detect or rule out the presence of a faint cluster galaxy or globular cluster at the SNe Ia locations. We have now been authorized to obtain parallel observations with WFC3. We use the same filters and the same exposure times as our ACS images. This data will provide additional cluster faint source number counts for our statistical analysis of any detection at our targeted coordinates, and contribute to our auxiliary science goals. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will obtain deep images, V=28.2 to 28.9 (F606W) and I=27.2 to 27.9 (F814W), for each of our four targets with the Advanced Camera for Surveys. Our four targets are the locations of apparently hostless Type Ia supernovae (SNeIa) in the central regions of rich galaxy clusters. The SNeIa have now faded so these observations will either detect a faint host, or confirm the SNeIa's association with the intracluster stellar population. Telescope orientations have been chosen to avoid possible star diffraction spikes from coming within 50-200 pixels of our target coordinates (tolerance depends on star magnitude). Total required integration times are divided into multiple exposures to avoid cosmic rays, and dithered to avoid possible hot pixels. Aperture "WFC1" was chosen as the target position on the CCD because amplifier "B" on WFC1 has the 12937( 7) - 13-Dec-2013 13:48:45 - [ 2] lowest read noise. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- We have been authorized to include parallel observations with WFC3. These have been set to the same filters and exposure times of our ACS observations. The orientations have been further constrained so that WFC3 will be closer to the clusters' centers than ACS. ------------------------------------------------------------------------------------ 12937( 7) - 13-Dec-2013 13:48:45 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 ABELL1650-9- CLUSTER OF GALAXIES, RA=12H59M1.3300S +/- 0.1", J2000 Z = V = 29 +/- 0 13-0 RICH CLUSTER DEC=-01D45'51.68" +/- 0.1" 0.0836 Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 ABELL2495-5- CLUSTER OF GALAXIES, RA=22H50M26.3300S +/- 0.1", J2000 Z = V = 29 +/- 0 13-0 RICH CLUSTER DEC=+10D54'41.70" +/- 0.1" 0.0796 Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 ABELL399-3-1 CLUSTER OF GALAXIES, RA=02H57M26.4100S +/- 0.1", J2000 Z = V = 29 +/- 0 4-0 RICH CLUSTER DEC=+12D58'7.63" +/- 0.1" 0.0613 Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 4 ABELL85-6-08 CLUSTER OF GALAXIES, RA=00H42M2.3900S +/- 0.1", J2000 Z = V = 29 +/- 0 -0 RICH CLUSTER DEC=-09D26'58.00" +/- 0.1" 0.0617 Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 12937( 7) - 13-Dec-2013 13:48:45 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 2 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 45 Angle_Between_Sides Center_Pattern NO Pattern_Comments: The intent is to simply have small scale dithers; we do not need to fill in the gap. ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 2 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 45 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 12937( 7) - 13-Dec-2013 13:48:45 - [ 5] Visit: 01 Visit Requirements: SCHED 100%; ORIENT 205D TO 269 D On Hold Comments: Additional Comments: Use of LOW-SKY suggested by HST staff (was not in our Phase I). Orientations set to avoid nearby very bright stars being aligned along x or y axis with target coordinates. Orientations then further constrained to put WFC3 closer to the cluster center than ACS. 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 ABELL1650-9 ACS/WFC ACCUM WFC1 F606W 1 600 S LOW-SKY; GS ACQ SCENARIO -13-0 (1800 S) BASE1B3; PATTERN 2 1-2; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 720 S S see below (1980 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ABELL1650-9 ACS/WFC ACCUM WFC1 F606W 1 690 S LOW-SKY; PATTERN 2 3-4; -13-0 (2070 S) PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 775 S S see below (1980 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ABELL1650-9 ACS/WFC ACCUM WFC1 F814W 1 670 S LOW-SKY; PATTERN 2 5-6; -13-0 (2010 S) PAR 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F814W 1 750 S S see below (1980 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ABELL1650-9 ACS/WFC ACCUM WFC1 F814W 1 680 S LOW-SKY; PATTERN 2 7-8; -13-0 (2040 S) PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F814W 1 770 S S see below (1980 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 ABELL1650-9 ACS/WFC ACCUM WFC1 F814W 1 690 S LOW-SKY; PATTERN 2 9-10; -13-0 (2070 S) PAR 10 WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY WFC3/UVI ACCUM UVIS F814W 1 770 S S see below (1980 S) ------------------------------------------------------------------------------------------------------------------------------------ 12937( 7) - 13-Dec-2013 13:48:45 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ ABELL1650-9-13-0 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 N/A ABELL1650-9-13-0 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 N/A ABELL1650-9-13-0 1 ACS/WFC ACCUM WFC1 F606W 3 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 600.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 700.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 3 none none none 1 680.0 S S ABELL1650-9-13-0 3 ACS/WFC ACCUM WFC1 F606W 1 none none none 2 N/A ABELL1650-9-13-0 3 ACS/WFC ACCUM WFC1 F606W 2 none none none 2 N/A ABELL1650-9-13-0 3 ACS/WFC ACCUM WFC1 F606W 3 none none none 2 N/A ANY 4 WFC3/UVI ACCUM UVIS F606W 1 none none none 2 600.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 2 none none none 2 700.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 3 none none none 2 680.0 S S ABELL1650-9-13-0 5 ACS/WFC ACCUM WFC1 F814W 1 none none none 3 N/A ABELL1650-9-13-0 5 ACS/WFC ACCUM WFC1 F814W 2 none none none 3 N/A ABELL1650-9-13-0 5 ACS/WFC ACCUM WFC1 F814W 3 none none none 3 N/A ANY 6 WFC3/UVI ACCUM UVIS F814W 1 none none none 3 600.0 S S ANY 6 WFC3/UVI ACCUM UVIS F814W 2 none none none 3 700.0 S S ANY 6 WFC3/UVI ACCUM UVIS F814W 3 none none none 3 680.0 S S ABELL1650-9-13-0 7 ACS/WFC ACCUM WFC1 F814W 1 none none none 4 N/A ABELL1650-9-13-0 7 ACS/WFC ACCUM WFC1 F814W 2 none none none 4 N/A ABELL1650-9-13-0 7 ACS/WFC ACCUM WFC1 F814W 3 none none none 4 N/A ANY 8 WFC3/UVI ACCUM UVIS F814W 1 none none none 4 600.0 S S ANY 8 WFC3/UVI ACCUM UVIS F814W 2 none none none 4 700.0 S S ANY 8 WFC3/UVI ACCUM UVIS F814W 3 none none none 4 680.0 S S ABELL1650-9-13-0 9 ACS/WFC ACCUM WFC1 F814W 1 none none none 5 N/A ABELL1650-9-13-0 9 ACS/WFC ACCUM WFC1 F814W 2 none none none 5 N/A ABELL1650-9-13-0 9 ACS/WFC ACCUM WFC1 F814W 3 none none none 5 N/A ANY 10 WFC3/UVI ACCUM UVIS F814W 1 none none none 5 600.0 S S 12937( 7) - 13-Dec-2013 13:48:45 - [ 7] 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 10 WFC3/UVI ACCUM UVIS F814W 2 none none none 5 700.0 S S ANY 10 WFC3/UVI ACCUM UVIS F814W 3 none none none 5 680.0 S S 12937( 7) - 13-Dec-2013 13:48:45 - [ 8] Visit: 02 Visit Requirements: ORIENT 41D TO 58 D; ORIENT 66D TO 86 D; ORIENT 92D TO 112 D On Hold Comments: Additional Comments: Use of LOW-SKY suggested by HST staff (was not in our Phase I). Orientations set to avoid nearby stars being aligned along x or y axis with target coordinates. We found that further constraints to force WFC3 closer to the cluster center than ACS (as done for other visits) resulted in just a 16 day range in the Visit Planner, so we have not included these constraints for this target. Instead, we impose additional orientation contraints to force a nearby cluster galaxy onto ACS-WFC2. This will be scientifically useful and still allows for a wide time span for scheduling. 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 ABELL2495-5 ACS/WFC ACCUM WFC1 F606W 1 780 S LOW-SKY; PATTERN 1 1-2; -13-0 see below PAR 2 WITH 1 (1476 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 770 S S see below (1606 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ABELL2495-5 ACS/WFC ACCUM WFC1 F606W 1 780 S LOW-SKY; PATTERN 1 3-4; -13-0 see below PAR 4 WITH 3 (1508 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F606W 1 770 S S see below (1568 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ABELL2495-5 ACS/WFC ACCUM WFC1 F814W 1 770 S LOW-SKY; PATTERN 1 5-6; -13-0 see below PAR 6 WITH 5 (1440 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F814W 1 750 S S see below (1540 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ABELL2495-5 ACS/WFC ACCUM WFC1 F814W 1 750 S LOW-SKY; PATTERN 2 7-8; -13-0 (2250 S) PAR 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F814W 1 840 S S see below (2380 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 ABELL2495-5 ACS/WFC ACCUM WFC1 F814W 1 760 S LOW-SKY; PATTERN 2 9-10; -13-0 (2280 S) PAR 10 WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 12937( 7) - 13-Dec-2013 13:48:45 - [ 9] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY WFC3/UVI ACCUM UVIS F814W 1 840 S S see below (2400 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 | ------------------------------------------------------------------------------------------------------------------------------------ ABELL2495-5-13-0 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 728.0 S ABELL2495-5-13-0 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 748.0 S ANY 2 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 828.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 778.0 S S ABELL2495-5-13-0 3 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 738.0 S ABELL2495-5-13-0 3 ACS/WFC ACCUM WFC1 F606W 2 none none none 2 770.0 S ANY 4 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 768.0 S S ANY 4 WFC3/UVI ACCUM UVIS F606W 2 none none none 2 800.0 S S ABELL2495-5-13-0 5 ACS/WFC ACCUM WFC1 F814W 1 none none none 2 730.0 S ABELL2495-5-13-0 5 ACS/WFC ACCUM WFC1 F814W 2 none none none 2 710.0 S ANY 6 WFC3/UVI ACCUM UVIS F814W 1 none none none 2 780.0 S S ANY 6 WFC3/UVI ACCUM UVIS F814W 2 none none none 2 760.0 S S ABELL2495-5-13-0 7 ACS/WFC ACCUM WFC1 F814W 1 none none none 3 N/A ABELL2495-5-13-0 7 ACS/WFC ACCUM WFC1 F814W 2 none none none 3 N/A ABELL2495-5-13-0 7 ACS/WFC ACCUM WFC1 F814W 3 none none none 3 N/A ANY 8 WFC3/UVI ACCUM UVIS F814W 1 none none none 3 800.0 S S ANY 8 WFC3/UVI ACCUM UVIS F814W 2 none none none 3 800.0 S S ANY 8 WFC3/UVI ACCUM UVIS F814W 3 none none none 3 780.0 S S ABELL2495-5-13-0 9 ACS/WFC ACCUM WFC1 F814W 1 none none none 4 N/A ABELL2495-5-13-0 9 ACS/WFC ACCUM WFC1 F814W 2 none none none 4 N/A ABELL2495-5-13-0 9 ACS/WFC ACCUM WFC1 F814W 3 none none none 4 N/A ANY 10 WFC3/UVI ACCUM UVIS F814W 1 none none none 4 800.0 S S ANY 10 WFC3/UVI ACCUM UVIS F814W 2 none none none 4 800.0 S S ANY 10 WFC3/UVI ACCUM UVIS F814W 3 none none none 4 800.0 S S 12937( 7) - 13-Dec-2013 13:48:45 - [ 10] Visit: 03 Visit Requirements: SCHED 100%; ORIENT 10D TO 29 D; ORIENT 39D TO 61 D On Hold Comments: Additional Comments: Use of LOW-SKY suggested by HST staff (was not in our Phase I). Orientations set to keep nearby bright stars out of the field of view. Orientations then further constrained to put WFC3 closer to the cluster center than ACS. 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 ABELL399-3- ACS/WFC ACCUM WFC1 F606W 1 600 S LOW-SKY; PATTERN 2 1-2; 14-0 (1800 S) PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 720 S S see below (2100 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ABELL399-3- ACS/WFC ACCUM WFC1 F814W 1 660 S LOW-SKY; PATTERN 2 3-4; 14-0 (1980 S) PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 750 S S see below (2190 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 | ------------------------------------------------------------------------------------------------------------------------------------ ABELL399-3-14-0 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 N/A ABELL399-3-14-0 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 N/A ABELL399-3-14-0 1 ACS/WFC ACCUM WFC1 F606W 3 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 700.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 700.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 3 none none none 1 700.0 S S ABELL399-3-14-0 3 ACS/WFC ACCUM WFC1 F814W 1 none none none 2 N/A ABELL399-3-14-0 3 ACS/WFC ACCUM WFC1 F814W 2 none none none 2 N/A ABELL399-3-14-0 3 ACS/WFC ACCUM WFC1 F814W 3 none none none 2 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W 1 none none none 2 730.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 2 none none none 2 730.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 3 none none none 2 730.0 S S 12937( 7) - 13-Dec-2013 13:48:45 - [ 11] Visit: 04 Visit Requirements: SCHED 100%; ORIENT 251D TO 292 D; ORIENT 298D TO 309 D; ORIENT 315D TO 341 D On Hold Comments: Additional Comments: Use of LOW-SKY suggested by HST staff (was not in our Phase I). Orientations set to avoid nearby stars being aligned along x or y axis with target coordinates. Orientations then further constrained to put WFC3 closer to the cluster center than ACS. 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 ABELL85-6-0 ACS/WFC ACCUM WFC1 F606W 1 600 S LOW-SKY; GS ACQ SCENARIO 8-0 (1800 S) BASE1B3; PATTERN 2 1-2; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F606W 1 720 S S see below (1960 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ABELL85-6-0 ACS/WFC ACCUM WFC1 F814W 1 675 S LOW-SKY; PATTERN 2 3-4; 8-0 (2025 S) PAR 4 WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F814W 1 750 S S see below (2100 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 | ------------------------------------------------------------------------------------------------------------------------------------ ABELL85-6-08-0 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 N/A ABELL85-6-08-0 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 N/A ABELL85-6-08-0 1 ACS/WFC ACCUM WFC1 F606W 3 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 600.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 700.0 S S ANY 2 WFC3/UVI ACCUM UVIS F606W 3 none none none 1 660.0 S S ABELL85-6-08-0 3 ACS/WFC ACCUM WFC1 F814W 1 none none none 2 N/A ABELL85-6-08-0 3 ACS/WFC ACCUM WFC1 F814W 2 none none none 2 N/A ABELL85-6-08-0 3 ACS/WFC ACCUM WFC1 F814W 3 none none none 2 N/A ANY 4 WFC3/UVI ACCUM UVIS F814W 1 none none none 2 700.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 2 none none none 2 700.0 S S ANY 4 WFC3/UVI ACCUM UVIS F814W 3 none none none 2 700.0 S S 12937( 7) - 13-Dec-2013 13:48:45 - [ 12] Visit: 54 Visit Requirements: SCHED 100%; ORIENT 298D TO 298 D On Hold Comments: Additional Comments: Use of LOW-SKY suggested by HST staff (was not in our Phase I). Orientations set to avoid nearby stars being aligned along x or y axis with target coordinates. Orientations then further constrained to put WFC3 closer to the cluster center than ACS. This is a repeat of the second orbit of visit 04. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ABELL85-6-0 ACS/WFC ACCUM WFC1 F814W 1 600 S LOW-SKY; GS ACQ SCENARIO 8-0 (1800 S) BASE1B3; PATTERN 2 1-2; PAR 2 WITH 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 ANY WFC3/UVI ACCUM UVIS F814W 1 750 S S see below (1900 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 | ------------------------------------------------------------------------------------------------------------------------------------ ABELL85-6-08-0 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A ABELL85-6-08-0 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A ABELL85-6-08-0 1 ACS/WFC ACCUM WFC1 F814W 3 none none none 1 N/A ANY 2 WFC3/UVI ACCUM UVIS F814W 1 none none none 1 600.0 S S ANY 2 WFC3/UVI ACCUM UVIS F814W 2 none none none 1 700.0 S S ANY 2 WFC3/UVI ACCUM UVIS F814W 3 none none none 1 600.0 S S 12937( 7) - 13-Dec-2013 13:48:45 - [ 13] Summary Form for Proposal 12937 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS, WFC1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1B3, LOW-SKY, ORIENT 10D TO 29 D, ORIENT 205D TO 269 D, ORIENT 251D TO 292 D, ORIENT 298D TO 298 D, ORIENT 298D TO 309 D, ORIENT 315D TO 341 D, ORIENT 39D TO 61 D, ORIENT 41D TO 58 D, ORIENT 66D TO 86 D, ORIENT 92D TO 112 D, PAR 10 WITH 9, PAR 2 WITH 1, PAR 4 WITH 3, PAR 6 WITH 5, PAR 8 WITH 7, PATTERN 1 1-2, PATTERN 1 3-4, PATTERN 1 5-6, PATTERN 2 1-2, PATTERN 2 3-4, PATTERN 2 5-6, PATTERN 2 7-8, PATTERN 2 9-10, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names ABELL1650-9-13-0, ABELL2495-5-13-0, ABELL399-3-14-0, ABELL85-6-08-0, ANY ------------------------------------------------------------------------------------------------------------------------------------