14510( 3) - 01-Aug-2016 19:34:05 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14510 Version: 3 Check-in Time: 01-Aug-2016 19:34:05 STScI Edit Number: 0 Title ACS UV Contamination Monitor ------------------------------------------------------------------------------------ Type Cycle CAL/ACS 24 ------------------------------------------------------------------------------------ Investigators Contact? PI: Roberto Avila Space Telescope Science Institute Y ------------------------------------------------------------------------------------ Abstract The observations consist of SBC imaging and spectroscopy of the cluster NGC 6681 in order to monitor the temporal evolution of the UV sensitivity. All six filters and the two prisms will be used. Two SBC dark frames will follow the orbits. ------------------------------------------------------------------------------------ Observations Description ------------------------ The SBC observations will be through all six filters (F115LP, F122M, F125LP, F140LP, F150LP, F165LP) and the prisms PR110L and PR130L. These observations will be taken once during the cycle. Two SBC dark frames will follow the SBC orbits. The main objective is to monitor possible variations of UV throughput with time. The secondary objective is to monitor the behavior of the SBC darks. ------------------------------------------------------------------------------------ 14510( 3) - 01-Aug-2016 19:34:05 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6681 CALIBRATION, DETECTOR RA=18H43M12.7500S +/- 0.05", J2000 V = 15. +/- 0 F-CONT(1600)=2.5e-15 SENSITIVITY TEST, DEC=-32D17'32.76" +/- 0.05" INSTRUMENT SENSITIVITY TEST, PHOTOMETRIC Reference Frame: ICRS Comments: Fluxes are for brightest star from Watson et al (1994 Ap.J., 435, L55) ------------------------------------------------------------------------------------------------------------------------------------ 14510( 3) - 01-Aug-2016 19:34:05 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-SBC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.472 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 44.4 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type ACS-SBC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.179 Line_Spacing 0.116 Coordinate_Frame POS-TARG Pattern_Orient 20.02 Angle_Between_Sides 63.65 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 14510( 3) - 01-Aug-2016 19:34:05 - [ 4] Visit: 01 Visit Requirements: ORIENT 230D TO 250 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC6681 ACS/SBC ACCUM SBC PR130L 1 250 S (500 SHADOW; PATTERN 1 1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6681 ACS/SBC ACCUM SBC F115LP 1 35 S (70 PATTERN 1 2 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC6681 ACS/SBC ACCUM SBC F125LP 1 40 S (80 PATTERN 1 3 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC6681 ACS/SBC ACCUM SBC F140LP 1 47 S (94 PATTERN 1 4 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC6681 ACS/SBC ACCUM SBC F150LP 1 70 S (140 PATTERN 1 5 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC6681 ACS/SBC ACCUM SBC F165LP 1 375 S (750 PATTERN 1 6 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 DARK ACS/SBC ACCUM SBC DEF 2 1020 S (2040 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC6681 1 ACS/SBC ACCUM SBC PR130L 1 none none none 1 N/A NGC6681 1 ACS/SBC ACCUM SBC PR130L 2 none none none 1 N/A NGC6681 2 ACS/SBC ACCUM SBC F115LP 1 none none none 1 N/A NGC6681 2 ACS/SBC ACCUM SBC F115LP 2 none none none 1 N/A NGC6681 3 ACS/SBC ACCUM SBC F125LP 1 none none none 1 N/A NGC6681 3 ACS/SBC ACCUM SBC F125LP 2 none none none 1 N/A NGC6681 4 ACS/SBC ACCUM SBC F140LP 1 none none none 1 N/A NGC6681 4 ACS/SBC ACCUM SBC F140LP 2 none none none 1 N/A NGC6681 5 ACS/SBC ACCUM SBC F150LP 1 none none none 1 N/A NGC6681 5 ACS/SBC ACCUM SBC F150LP 2 none none none 1 N/A NGC6681 6 ACS/SBC ACCUM SBC F165LP 1 none none none 1 N/A NGC6681 6 ACS/SBC ACCUM SBC F165LP 2 none none none 1 N/A DARK 7 ACS/SBC ACCUM SBC DEF none none 1 none 1 N/A DARK 7 ACS/SBC ACCUM SBC DEF none none 2 none 1 N/A 14510( 3) - 01-Aug-2016 19:34:05 - [ 5] Visit: 02 Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC6681 ACS/SBC ACCUM SBC PR110L 1 220 S (440 SHADOW; PATTERN 1 1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6681 ACS/SBC ACCUM SBC F122M 1 430 S PATTERN 2 2 (1720 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 DARK ACS/SBC ACCUM SBC DEF 2 1020 S (2040 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC6681 1 ACS/SBC ACCUM SBC PR110L 1 none none none 1 N/A NGC6681 1 ACS/SBC ACCUM SBC PR110L 2 none none none 1 N/A NGC6681 2 ACS/SBC ACCUM SBC F122M 1 none none none 1 N/A NGC6681 2 ACS/SBC ACCUM SBC F122M 2 none none none 1 N/A NGC6681 2 ACS/SBC ACCUM SBC F122M 3 none none none 1 N/A NGC6681 2 ACS/SBC ACCUM SBC F122M 4 none none none 1 N/A DARK 3 ACS/SBC ACCUM SBC DEF none none 1 none 1 N/A DARK 3 ACS/SBC ACCUM SBC DEF none none 2 none 1 N/A 14510( 3) - 01-Aug-2016 19:34:05 - [ 6] Summary Form for Proposal 14510 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures SBC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/SBC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 230D TO 250 D, PATTERN 1 1, PATTERN 1 2, PATTERN 1 3, PATTERN 1 4, PATTERN 1 5, PATTERN 1 6, PATTERN 2 2, SAME ORIENT AS 01, SHADOW ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements DEF, F115LP, F122M, F125LP, F140LP, F150LP, F165LP, PR110L, PR130L ------------------------------------------------------------------------------------------------------------------------------------ Target Names DARK, NGC6681 ------------------------------------------------------------------------------------------------------------------------------------