14398( 8) - 07-Jul-2016 11:36:38 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14398 Version: 8 Check-in Time: 07-Jul-2016 11:36:38 STScI Edit Number: 1 Title ACS External CTE Monitor ------------------------------------------------------------------------------------ Type Cycle CAL/ACS 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Marco Chiaberge Space Telescope Science Institute - ESA Y ------------------------------------------------------------------------------------ Abstract This program will obtain a direct calibration of photometric losses due to imperfect CTE by imaging stars in 47 Tuc. ------------------------------------------------------------------------------------ Observations Description ------------------------ For each pointing we will obtain 2 CR-SPLITs to allow cosmic ray rejection and provide a set of clean stars for the analysis of CTE effects on photometry. More specifically, since the CTE also depends on the background level, we will obtain 5 different background levels, using the F502N and F606W filters and different exposure times, from 30s to 400s per exposure. In this way, we will obtain background levels ranging from ~0 to ~50 e-/pixel. Thus the total number of exposures is 5 (bkg levels) x2 (CR-SPLIT) x 3 (positions on the sky) = 30. Since it is crucial to obtain an almost constant sky level, we will request low sky. Four to five images can be done each orbit so the total orbit request is 8 orbit. One field located closer to the nucleus of the cluster (~2' off-center) will also be imaged with the same technique. A series of short (30s) exposures with be taken with F502N in order to obtain a larger number of stars in the field of view. This will allow us to better characterize the effects of CTE for extremely low background values. ------------------------------------------------------------------------------------ 14398( 8) - 07-Jul-2016 11:36:38 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC104 STELLAR CLUSTER, RA=00H22M38.2500S +/- 1", J2000 V = 17.5 +/- 0.1 GLOBULAR CLUSTER DEC=-72D03'54.00" +/- 1" Reference Frame: ICRS Comments: Field 6' W of cluster centre. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 0.0 0 0 0 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104-F502N STELLAR CLUSTER, RA=00H23M38.0000S +/- 0.1", J2000 V = 4.91 GLOBULAR CLUSTER DEC=-72D06'6.00" +/- 0.1" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 14398( 8) - 07-Jul-2016 11:36:38 - [ 3] Visit: 01 Visit Requirements: SEQ 01, 02, 03, 04 WITHIN 2 D On Hold Comments: Additional Comments: USE SINGLE GUIDE STAR IF NECESSARY.VISIT SHOULD USE CONTIGUOUS ORBITS DO NO BREAK ORBITS 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 NGC104 ACS/WFC ACCUM WFC F502N CR-SPLIT=2 1 60.0 S (60 POS TARG 101.17, 8.19; S) LOW-SKY; GS ACQ SCENARIO BASE1B3; SAME OBSET 1-8; SEQ 1-3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=2 1 800.0 S POS TARG 101.17, 8.19; (800 S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC104 ACS/WFC ACCUM WFC F502N CR-SPLIT=NO 1 30.0 S (30 POS TARG 0.0, 0.0; S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC104 ACS/WFC ACCUM WFC F502N CR-SPLIT=NO 1 30.0 S (30 POS TARG 0.0, 0.0; S) LOW-SKY; SEQ 4-6 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=2 1 800.0 S POS TARG 0.0, 0.0; (800 S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC104 ACS/WFC ACCUM WFC F502N CR-SPLIT=2 1 60.0 S (60 POS TARG 0.0, 103.64; S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=2 1 800.0 S POS TARG 0.0, 103.64; (800 S) LOW-SKY; SEQ 7 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC104 ACS/WFC ACCUM WFC F502N CR-SPLIT=2 1 720.0 S POS TARG 101.17, 8.19; (720 S) LOW-SKY; SEQ 8 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 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 1 ACS/WFC ACCUM WFC F502N none none none 1 1 N/A NGC104 1 ACS/WFC ACCUM WFC F502N none none none 2 1 N/A NGC104 2 ACS/WFC ACCUM WFC F606W none none none 1 1 N/A NGC104 2 ACS/WFC ACCUM WFC F606W none none none 2 1 N/A NGC104 3 ACS/WFC ACCUM WFC F502N none none none none 1 N/A NGC104 4 ACS/WFC ACCUM WFC F502N none none none none 2 N/A NGC104 5 ACS/WFC ACCUM WFC F606W none none none 1 2 N/A NGC104 5 ACS/WFC ACCUM WFC F606W none none none 2 2 N/A NGC104 6 ACS/WFC ACCUM WFC F502N none none none 1 2 N/A 14398( 8) - 07-Jul-2016 11:36:38 - [ 4] 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 6 ACS/WFC ACCUM WFC F502N none none none 2 2 N/A NGC104 7 ACS/WFC ACCUM WFC F606W none none none 1 3 N/A NGC104 7 ACS/WFC ACCUM WFC F606W none none none 2 3 N/A NGC104 8 ACS/WFC ACCUM WFC F502N none none none 1 3 N/A NGC104 8 ACS/WFC ACCUM WFC F502N none none none 2 3 N/A 14398( 8) - 07-Jul-2016 11:36:38 - [ 5] Visit: 02 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: USE SINGLE GUIDE STAR IF NECESSARY.VISIT SHOULD USE CONTIGUOUS ORBITS DO NO BREAK ORBITS 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 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=2 1 80.0 S (80 POS TARG 101.17, 8.19; S) LOW-SKY; GS ACQ SCENARIO BASE1B3; SAME OBSET 1-6; SEQ 1-3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104 ACS/WFC ACCUM WFC F502N CR-SPLIT=2 1 720.0 S POS TARG 0.0, 0.0; (720 S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 40.0 S (40 POS TARG 0.0, 0.0; S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=NO 1 40.0 S (40 POS TARG 0.0, 0.0; S) LOW-SKY; SEQ 4-6 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=2 1 80.0 S (80 POS TARG 0.0, 103.64; S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC104 ACS/WFC ACCUM WFC F502N CR-SPLIT=2 1 720.0 S POS TARG 0.0, 103.64; (720 S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 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 1 ACS/WFC ACCUM WFC F606W none none none 1 1 N/A NGC104 1 ACS/WFC ACCUM WFC F606W none none none 2 1 N/A NGC104 2 ACS/WFC ACCUM WFC F502N none none none 1 1 N/A NGC104 2 ACS/WFC ACCUM WFC F502N none none none 2 1 N/A NGC104 3 ACS/WFC ACCUM WFC F606W none none none none 1 N/A NGC104 4 ACS/WFC ACCUM WFC F606W none none none none 2 N/A NGC104 5 ACS/WFC ACCUM WFC F606W none none none 1 2 N/A NGC104 5 ACS/WFC ACCUM WFC F606W none none none 2 2 N/A NGC104 6 ACS/WFC ACCUM WFC F502N none none none 1 2 N/A NGC104 6 ACS/WFC ACCUM WFC F502N none none none 2 2 N/A 14398( 8) - 07-Jul-2016 11:36:38 - [ 6] Visit: 03 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: USE SINGLE GUIDE STAR IF NECESSARY.VISIT SHOULD USE CONTIGUOUS ORBITS DO NO BREAK ORBITS 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 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=2 1 300.0 S POS TARG 101.17, 8.19; (300 S) LOW-SKY; GS ACQ SCENARIO BASE1B3; SAME OBSET 1-3; SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=2 1 300.0 S POS TARG 0.0, 0.0; (300 S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC104 ACS/WFC ACCUM WFC F606W CR-SPLIT=2 1 300.0 S POS TARG 0.0, 103.64; (300 S) LOW-SKY; SEQ 3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 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 1 ACS/WFC ACCUM WFC F606W none none none 1 1 N/A NGC104 1 ACS/WFC ACCUM WFC F606W none none none 2 1 N/A NGC104 2 ACS/WFC ACCUM WFC F606W none none none 1 1 N/A NGC104 2 ACS/WFC ACCUM WFC F606W none none none 2 1 N/A NGC104 3 ACS/WFC ACCUM WFC F606W none none none 1 2 N/A NGC104 3 ACS/WFC ACCUM WFC F606W none none none 2 2 N/A 14398( 8) - 07-Jul-2016 11:36:38 - [ 7] Visit: 04 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: USE SINGLE GUIDE STAR IF NECESSARY.VISIT SHOULD USE CONTIGUOUS ORBITS DO NO BREAK ORBITS 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 NGC104-F502 ACS/WFC ACCUM WFC F502N CR-SPLIT=2 1 60.0 S (60 POS TARG 0.0, 0.0; N S) LOW-SKY; GS ACQ SCENARIO BASE1B3; SAME OBSET 1-2; SEQ 1-2 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC104-F502 ACS/WFC ACCUM WFC F502N CR-SPLIT=2 1 60.0 S (60 POS TARG 0.0, 103.64; N S) LOW-SKY ------------------------------------------------------------------------------------------------------------------------------------ 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-F502N 1 ACS/WFC ACCUM WFC F502N none none none 1 1 N/A NGC104-F502N 1 ACS/WFC ACCUM WFC F502N none none none 2 1 N/A NGC104-F502N 2 ACS/WFC ACCUM WFC F502N none none none 1 1 N/A NGC104-F502N 2 ACS/WFC ACCUM WFC F502N none none none 2 1 N/A 14398( 8) - 07-Jul-2016 11:36:38 - [ 8] Summary Form for Proposal 14398 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures WFC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=2, CR-SPLIT=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO BASE1B3, LOW-SKY, POS TARG 0.0, 0.0, POS TARG 0.0, 103.64, POS TARG 101.17, 8.19, SAME OBSET 1-2, SAME OBSET 1-3, SAME OBSET 1-6, SAME OBSET 1-8, SAME ORIENT AS 01, SEQ 01, 02, 03, 04 WITHIN 2 D, SEQ 1-2 NON-INT, SEQ 1-3 NON-INT, SEQ 3 NON-INT, SEQ 4-6 NON-INT, SEQ 7 NON-INT, SEQ 8 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F502N, F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC104, NGC104-F502N ------------------------------------------------------------------------------------------------------------------------------------