12734( 3) - 01-Nov-2011 12:56:54 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12734 Version: 3 Check-in Time: 01-Nov-2011 12:56:54 STScI Edit Number: 0 Title ACS CCD Stability Monitor ------------------------------------------------------------------------------------ Type Cycle CAL/ACS 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Norman Grogin Space Telescope Science Institute CoI: Dr. Leonardo Ubeda Space Telescope Science Institute N CoI: Matt Mcmaster Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract A moderately crowded stellar field in the cluster 47 Tuc (6 arcmin West of the cluster core) is observed every four months with the WFC. The first visit exercises the full suite of broad and narrow band imaging filters and sub-array modes; following visits observe with only the six most popular Cycle 18 filters in full-frame mode. The positions and magnitudes of objects will be used to monitor local and large scale variations in the plate scale and the sensitivity of the detectors and to derive an independent measure of the detector CTE. One exposure in each sub-array mode with the WFC will allow us to verify that photometry obtained in full-frame and in sub-array modes are repeatable to better than 1%. This test is important for the ACS Photometric Cross-Calibration program, which uses sub-array exposures. ------------------------------------------------------------------------------------ Observations Description ------------------------ A moderately crowded stellar field in the cluster 47 Tuc (6 arcmin West of the cluster core) is observed every four months with the WFC. The first visit exercises the full suite of broad and narrow band imaging filters and sub-array modes; following visits observe with only the six most popular Cycle 19 filters in full-frame mode. The positions and magnitudes of objects will be used to monitor local and large scale variations in the plate scale and the sensitivity of the detectors and to derive an independent measure of the detector CTE. One exposure in each sub-array mode with the WFC will allow us to verify that photometry obtained in full-frame and in sub-array modes are repeatable to better than 1%. This test is important for the ACS Photometric Cross-Calibration program, which uses sub-array exposures. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- 12734( 3) - 01-Nov-2011 12:56:54 - [ 2] ------------------------------------------------------------------------------------ 12734( 3) - 01-Nov-2011 12:56:54 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC104-WFC STELLAR CLUSTER, RA=00H22M38.5000S +/- 1", J2000 V = 17.5 +/- 0.1 GLOBULAR CLUSTER DEC=-72D04'4.00" +/- 1" Reference Frame: ICRS Comments: Magnitude of main-sequence turn-off stars. Field 6' W of cluster centre. ------------------------------------------------------------------------------------------------------------------------------------ 12734( 3) - 01-Nov-2011 12:56:54 - [ 4] Visit: 01 Visit Requirements: GYRO MODE 3GOBAD; SCHED 40%; BETWEEN 24-NOV-2011:12:00:00 AND 03-DEC-2011:12:00:00 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC104-WFC ACS/WFC ACCUM WFC1-1K F606W 1 30.0 S POS TARG -74.59748050209527, -84.12280464446769 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104-WFC ACS/WFC ACCUM WFCENTER F555W CR-SPLIT=NO, GAIN=2.0, 1 200.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC104-WFC ACS/WFC ACCUM WFCENTER F502N CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC104-WFC ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC104-WFC ACS/WFC ACCUM WFCENTER F775W CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC104-WFC ACS/WFC ACCUM WFCENTER F850LP CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC104-WFC ACS/WFC ACCUM WFCENTER F475W CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC104-WFC ACS/WFC ACCUM WFC1-2K F606W 1 30.0 S POS TARG -48.7762870805303, -57.28585475031285 ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC104-WFC ACS/WFC ACCUM WFCENTER F625W CR-SPLIT=NO, GAIN=2.0, 1 300.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC104-WFC ACS/WFC ACCUM WFCENTER F658N CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC104-WFC ACS/WFC ACCUM WFCENTER F550M CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC104-WFC ACS/WFC ACCUM WFCENTER F660N CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC104-WFC ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 12734( 3) - 01-Nov-2011 12:56:54 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 14 NGC104-WFC ACS/WFC ACCUM WFCENTER F435W CR-SPLIT=NO, GAIN=2.0, 1 339.0 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC104-WFC 1 ACS/WFC ACCUM WFC1-1K F606W none none none none 1 N/A NGC104-WFC 2 ACS/WFC ACCUM WFCENTER F555W none none none none 1 N/A NGC104-WFC 3 ACS/WFC ACCUM WFCENTER F502N none none none none 1 N/A NGC104-WFC 4 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A NGC104-WFC 5 ACS/WFC ACCUM WFCENTER F775W none none none none 1 N/A NGC104-WFC 6 ACS/WFC ACCUM WFCENTER F850LP none none none none 1 N/A NGC104-WFC 7 ACS/WFC ACCUM WFCENTER F475W none none none none 1 N/A NGC104-WFC 8 ACS/WFC ACCUM WFC1-2K F606W none none none none 2 N/A NGC104-WFC 9 ACS/WFC ACCUM WFCENTER F625W none none none none 2 N/A NGC104-WFC 10 ACS/WFC ACCUM WFCENTER F658N none none none none 2 N/A NGC104-WFC 11 ACS/WFC ACCUM WFCENTER F550M none none none none 2 N/A NGC104-WFC 12 ACS/WFC ACCUM WFCENTER F660N none none none none 2 N/A NGC104-WFC 13 ACS/WFC ACCUM WFCENTER F814W none none none none 2 N/A NGC104-WFC 14 ACS/WFC ACCUM WFCENTER F435W none none none none 2 N/A 12734( 3) - 01-Nov-2011 12:56:54 - [ 6] Visit: 02 Visit Requirements: GYRO MODE 3GOBAD; SCHED 40%; BETWEEN 19-MAR-2012:00:00:00 AND 28-MAR-2012:00:00:00 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC104-WFC ACS/WFC ACCUM WFCENTER F850LP CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104-WFC ACS/WFC ACCUM WFCENTER F775W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC104-WFC ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC104-WFC ACS/WFC ACCUM WFCENTER F475W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC104-WFC ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC104-WFC ACS/WFC ACCUM WFCENTER F435W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC104-WFC 1 ACS/WFC ACCUM WFCENTER F850LP none none none none 1 N/A NGC104-WFC 2 ACS/WFC ACCUM WFCENTER F775W none none none none 1 N/A NGC104-WFC 3 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A NGC104-WFC 4 ACS/WFC ACCUM WFCENTER F475W none none none none 1 N/A NGC104-WFC 5 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A NGC104-WFC 6 ACS/WFC ACCUM WFCENTER F435W none none none none 1 N/A 12734( 3) - 01-Nov-2011 12:56:54 - [ 7] Visit: 03 Visit Requirements: GYRO MODE 3GOBAD; SCHED 40%; BETWEEN 14-JUL-2012:00:00:00 AND 23-JUL-2012:00:00:00 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC104-WFC ACS/WFC ACCUM WFCENTER F850LP CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104-WFC ACS/WFC ACCUM WFCENTER F775W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC104-WFC ACS/WFC ACCUM WFCENTER F606W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC104-WFC ACS/WFC ACCUM WFCENTER F475W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC104-WFC ACS/WFC ACCUM WFCENTER F814W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC104-WFC ACS/WFC ACCUM WFCENTER F435W CR-SPLIT=NO, GAIN=2.0, 1 339 S COMPRESSION=NONE ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC104-WFC 1 ACS/WFC ACCUM WFCENTER F850LP none none none none 1 N/A NGC104-WFC 2 ACS/WFC ACCUM WFCENTER F775W none none none none 1 N/A NGC104-WFC 3 ACS/WFC ACCUM WFCENTER F606W none none none none 1 N/A NGC104-WFC 4 ACS/WFC ACCUM WFCENTER F475W none none none none 1 N/A NGC104-WFC 5 ACS/WFC ACCUM WFCENTER F814W none none none none 1 N/A NGC104-WFC 6 ACS/WFC ACCUM WFCENTER F435W none none none none 1 N/A 12734( 3) - 01-Nov-2011 12:56:54 - [ 8] Summary Form for Proposal 12734 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC1-1K, WFC1-2K, WFCENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters COMPRESSION=NONE, CR-SPLIT=NO, GAIN=2.0 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 14-JUL-2012:00:00:00 AND 23-JUL-2012:00:00:00, BETWEEN 19-MAR-2012:00:00:00 AND 28-MAR-2012:00:00:00, BETWEEN 24-NOV-2011:12:00:00 AND 03-DEC-2011:12:00:00, GYRO MODE 3GOBAD, POS TARG -48.7762870805303, -57.28585475031285, POS TARG -74.59748050209527, -84.12280464446769, SCHED 40% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F435W, F475W, F502N, F550M, F555W, F606W, F625W, F658N, F660N, F775W, F814W, F850LP ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC104-WFC ------------------------------------------------------------------------------------------------------------------------------------