12388( 2) - 27-Oct-2010 13:31:54 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12388 Version: 2 Check-in Time: 27-Oct-2010 13:31:54 STScI Edit Number: 0 Title ACS UV Contamination Monitor ------------------------------------------------------------------------------------ Type Cycle CAL/ACS 18 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Linda J. Smith Space Telescope Science Institute CoI: Dr. Leonardo Ubeda Space Telescope Science Institute N ------------------------------------------------------------------------------------ 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. The observations will be done using all six filters and the two prisms. Two SBC dark frames will follow the SBC 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. Real Time Justification ----------------------- Calibration Justification ------------------------- 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. Additional Comments ------------------- ------------------------------------------------------------------------------------ 12388( 2) - 27-Oct-2010 13:31:54 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 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" Reference Frame: ICRS Comments: Fluxes are for brightest star from Watson et al (1994, Ap.J. 435, L55) Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 0.0 0.0 0.0 0 ------------------------------------------------------------------------------------------------------------------------------------ 12388( 2) - 27-Oct-2010 13:31:54 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 12388( 2) - 27-Oct-2010 13:31:54 - [ 4] Visit: 01 Visit Requirements: GYRO MODE 3GOBAD 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 NGC6681 ACS/SBC ACCUM SBC PR130L 1 250.0 S SHADOW; PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6681 ACS/SBC ACCUM SBC F115LP 1 35.0 S PATTERN 1 2 ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC6681 ACS/SBC ACCUM SBC F125LP 1 40.0 S PATTERN 1 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC6681 ACS/SBC ACCUM SBC F140LP 1 47.0 S PATTERN 1 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC6681 ACS/SBC ACCUM SBC F150LP 1 70.0 S PATTERN 1 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC6681 ACS/SBC ACCUM SBC F165LP 1 375.0 S PATTERN 1 6 ------------------------------------------------------------------------------------------------------------------------------------ 7 DARK ACS/SBC ACCUM SBC DEF 2 1020.0 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 12388( 2) - 27-Oct-2010 13:31:54 - [ 5] Visit: 02 Visit Requirements: 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 NGC6681 ACS/SBC ACCUM SBC PR110L 1 220.0 S SHADOW; PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC6681 ACS/SBC ACCUM SBC F122M 1 430.0 S ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC6681 ACS/SBC ACCUM SBC F122M 1 430.0 S POS TARG 0.24000000000000002, 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC6681 ACS/SBC ACCUM SBC F122M 1 430.0 S POS TARG 0.24000000000000002, 0.24000000000000002 ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC6681 ACS/SBC ACCUM SBC F122M 1 430.0 S POS TARG 0.0, 0.24000000000000002 ------------------------------------------------------------------------------------------------------------------------------------ 6 DARK ACS/SBC ACCUM SBC DEF 2 1020.0 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 none none none none 1 N/A NGC6681 3 ACS/SBC ACCUM SBC F122M none none none none 1 N/A NGC6681 4 ACS/SBC ACCUM SBC F122M none none none none 1 N/A NGC6681 5 ACS/SBC ACCUM SBC F122M none none none none 1 N/A DARK 6 ACS/SBC ACCUM SBC DEF none none 1 none 1 N/A DARK 6 ACS/SBC ACCUM SBC DEF none none 2 none 1 N/A 12388( 2) - 27-Oct-2010 13:31:54 - [ 6] Summary Form for Proposal 12388 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures SBC ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/SBC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GYRO MODE 3GOBAD, PATTERN 1 1, PATTERN 1 2, PATTERN 1 3, PATTERN 1 4, PATTERN 1 5, PATTERN 1 6, POS TARG 0.0, 0.24000000000000002, POS TARG 0.24000000000000002, 0.0, POS TARG 0.24000000000000002, 0.24000000000000002, SHADOW ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements DEF, F115LP, F122M, F125LP, F140LP, F150LP, F165LP, PR110L, PR130L ------------------------------------------------------------------------------------------------------------------------------------ Target Names DARK, NGC6681 ------------------------------------------------------------------------------------------------------------------------------------