12503( 7) - 19-Oct-2012 15:13:17 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 12503 Version: 7 Check-in Time: 19-Oct-2012 15:13:17 STScI Edit Number: 4 Title The True Origin of Hypervelocity Stars ------------------------------------------------------------------------------------ Type Cycle GO 19 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Oleg Y. Gnedin University of Michigan Y CoI: Dr. Jay Anderson Space Telescope Science Institute N CoI: Dr. Howard E. Bond Space Telescope Science Institute N CoI: Dr. Warren R. Brown Smithsonian Institution Astrophysical N Observatory CoI: Dr. Margaret Geller Smithsonian Institution Astrophysical N Observatory CoI: Dr. Scott J. Kenyon Smithsonian Institution Astrophysical N Observatory CoI: Dr. Judith Cohen California Institute of Technology N ------------------------------------------------------------------------------------ Abstract We propose to obtain WFC3 images of 4 hypervelocity stars in the Galactic halo, in order to conclusively establish their origin. This will be a final epoch of a long-term program to measure precise proper motions in an absolute inertial frame. The origin of these unique stars with extremely large positive radial velocities, in excess of the escape speed from the Galaxy, is consistent only with being ejected by the massive black hole at the Galactic center. Reconstructing the full three-dimensional space motion of these stars, through astrometric proper motions, provides a unique opportunity to measure the shape of the triaxial dark matter halo, at larger distances than is afforded by tidal streams. In Cycles 15 and 17 our team obtained two epochs of observations for these stars with ACS. The accuracy of the proper motion measurement was affected by the CTE degradation in ACS and the unexpected change in the PSF after SM4. The CTE error of HVS3 was unfortunately amplified by the need to use different guide stars and take the second-epoch observations at a 180 degree different orientation. We request third-epoch observations for 4 targets with WFC3 to double the proper motion baseline to 5-6 years and to reduce the systematic error using our newly-developed CTE correction. The new measurement will conclusively confirm or reject the Galactocentric origin of HVSs. ------------------------------------------------------------------------------------ Observations Description ------------------------ These are 3rd-epoch images of 4 hypervelocity stars, aimed at determining precise proper motions relative to background galaxies. The 1st and 2nd epochs were observed with ACS, but for the 3rd epoch we are changing to WFC3/UVIS. We will spend 2 orbits on each of the 4 targets. During the first orbit, we take dithered exposures centered around the center of the UVIS1 chip, and during the 2nd orbit they are dithered around the center of the UVIS2 chip. We have specified ORIENT angles such that the long direction of the chips will be 12503( 7) - 19-Oct-2012 15:13:17 - [ 2] parallel to what we used for the long direction of the ACS chips at the 1st and 2nd epochs. We also use the same filters that were used with ACS (F814W for 3 of the stars, F850LP for one of them). The AFTER dates are set so that we will observed about 3 years since the more recent ACS observation. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 12503( 7) - 19-Oct-2012 15:13:17 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ090745. STAR, BP, HALO RA=09H07M44.9900S +/- 0.1", J2000 V = 19.96 +/- 0.2 0+024507 DEC=+02D45'6.40" +/- 0.1" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ093320. STAR, BP, HALO RA=09H33M20.8800S +/- 0.1", J2000 V = 19 +/- 0.2 86+441705.4 DEC=+44D17'5.50" +/- 0.1" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 HE0437-5439 STAR, BP, HALO RA=04H38M12.7700S +/- 0.1", J2000 V = 16.2 +/- 0.2 DEC=-54D33'11.80" +/- 0.1" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ091301. STAR, BP, HALO RA=09H13M1.0000S +/- 0.1", J2000 V = 18.59 +/- 0.2 0+305120 DEC=+30D51'20.20" +/- 0.1" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 12503( 7) - 19-Oct-2012 15:13:17 - [ 4] Visit: 01 Visit Requirements: SCHED 70%; ORIENT 54.941093D TO 54.941093 D; ORIENT 234.941093D TO 234.941093 D; AFTER 30-SEP-2012 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 SDSSJ090745 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.23702, .0+024507 S see below -0.13447 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ090745 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.11851, .0+024507 S see below -0.20786 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ090745 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.25677, .0+024507 S see below 0.13586 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ090745 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.09876, .0+024507 S see below 0.24854 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ090745 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.23702, .0+024507 S see below -0.13447 ------------------------------------------------------------------------------------------------------------------------------------ 6 SDSSJ090745 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.11851, .0+024507 S see below -0.20786 ------------------------------------------------------------------------------------------------------------------------------------ 7 SDSSJ090745 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.25677, .0+024507 S see below 0.13586 ------------------------------------------------------------------------------------------------------------------------------------ 8 SDSSJ090745 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.09876, .0+024507 S see below 0.24854 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ090745.0+02450 1 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 598.0 S 7 S SDSSJ090745.0+02450 2 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 598.0 S 7 S SDSSJ090745.0+02450 3 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 598.0 S 7 S SDSSJ090745.0+02450 4 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 598.0 S 7 S SDSSJ090745.0+02450 5 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 626.0 S 7 S 12503( 7) - 19-Oct-2012 15:13:17 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ090745.0+02450 6 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 626.0 S 7 S SDSSJ090745.0+02450 7 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 626.0 S 7 S SDSSJ090745.0+02450 8 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 626.0 S 7 S 12503( 7) - 19-Oct-2012 15:13:17 - [ 6] Visit: 02 Visit Requirements: SCHED 60%; ORIENT 98D TO 98 D; ORIENT 278D TO 278 D; AFTER 15-SEP-2012 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 SDSSJ093320 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.23702, .86+441705. S see below -0.13447 4 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ093320 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.11851, .86+441705. S see below -0.20786 4 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ093320 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.25677, .86+441705. S see below 0.13586 4 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ093320 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.09876, .86+441705. S see below 0.24854 4 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ093320 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.23702, .86+441705. S see below -0.13447 4 ------------------------------------------------------------------------------------------------------------------------------------ 6 SDSSJ093320 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.11851, .86+441705. S see below -0.20786 4 ------------------------------------------------------------------------------------------------------------------------------------ 7 SDSSJ093320 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.25677, .86+441705. S see below 0.13586 4 ------------------------------------------------------------------------------------------------------------------------------------ 8 SDSSJ093320 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.09876, .86+441705. S see below 0.24854 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ093320.86+4417 1 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 613.0 S 05.4 S SDSSJ093320.86+4417 2 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 613.0 S 05.4 S 12503( 7) - 19-Oct-2012 15:13:17 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ093320.86+4417 3 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 613.0 S 05.4 S SDSSJ093320.86+4417 4 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 613.0 S 05.4 S SDSSJ093320.86+4417 5 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 641.0 S 05.4 S SDSSJ093320.86+4417 6 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 641.0 S 05.4 S SDSSJ093320.86+4417 7 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 641.0 S 05.4 S SDSSJ093320.86+4417 8 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 641.0 S 05.4 S 12503( 7) - 19-Oct-2012 15:13:17 - [ 8] Visit: 03 Visit Requirements: SCHED 60%; ORIENT 170.014702D TO 170.014702 D; ORIENT 350.014702D TO 350.014702 D; ORIENT 80.014702D TO 80.014702 D; ORIENT 260.014702D TO 260.014702 D; AFTER 01-SEP-2012 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 HE0437-5439 WFC3/UVI ACCUM UVIS1 F850LP CR-SPLIT=NO 1 350 S POS TARG -25, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 2 HE0437-5439 WFC3/UVI ACCUM UVIS1 F850LP CR-SPLIT=NO 1 350 S POS TARG -15, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 3 HE0437-5439 WFC3/UVI ACCUM UVIS1 F850LP CR-SPLIT=NO 1 350 S POS TARG -5, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 4 HE0437-5439 WFC3/UVI ACCUM UVIS1 F850LP CR-SPLIT=NO 1 350 S POS TARG 5, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 5 HE0437-5439 WFC3/UVI ACCUM UVIS1 F850LP CR-SPLIT=NO 1 350 S POS TARG 15, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 6 HE0437-5439 WFC3/UVI ACCUM UVIS1 F850LP CR-SPLIT=NO 1 350 S POS TARG 25, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 7 HE0437-5439 WFC3/UVI ACCUM UVIS2 F850LP CR-SPLIT=NO 1 350 S POS TARG -25, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 8 HE0437-5439 WFC3/UVI ACCUM UVIS2 F850LP CR-SPLIT=NO 1 350 S POS TARG -15, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 9 HE0437-5439 WFC3/UVI ACCUM UVIS2 F850LP CR-SPLIT=NO 1 350 S POS TARG -5, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 10 HE0437-5439 WFC3/UVI ACCUM UVIS2 F850LP CR-SPLIT=NO 1 350 S POS TARG 5, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 11 HE0437-5439 WFC3/UVI ACCUM UVIS2 F850LP CR-SPLIT=NO 1 350 S POS TARG 15, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 12 HE0437-5439 WFC3/UVI ACCUM UVIS2 F850LP CR-SPLIT=NO 1 350 S POS TARG 25, 0 S see below ------------------------------------------------------------------------------------------------------------------------------------ 12503( 7) - 19-Oct-2012 15:13:17 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HE0437-5439 1 WFC3/UVI ACCUM UVIS1 F850LP none none none none 1 379.0 S S HE0437-5439 2 WFC3/UVI ACCUM UVIS1 F850LP none none none none 1 379.0 S S HE0437-5439 3 WFC3/UVI ACCUM UVIS1 F850LP none none none none 1 379.0 S S HE0437-5439 4 WFC3/UVI ACCUM UVIS1 F850LP none none none none 1 379.0 S S HE0437-5439 5 WFC3/UVI ACCUM UVIS1 F850LP none none none none 1 379.0 S S HE0437-5439 6 WFC3/UVI ACCUM UVIS1 F850LP none none none none 1 379.0 S S HE0437-5439 7 WFC3/UVI ACCUM UVIS2 F850LP none none none none 2 397.0 S S HE0437-5439 8 WFC3/UVI ACCUM UVIS2 F850LP none none none none 2 397.0 S S HE0437-5439 9 WFC3/UVI ACCUM UVIS2 F850LP none none none none 2 397.0 S S HE0437-5439 10 WFC3/UVI ACCUM UVIS2 F850LP none none none none 2 397.0 S S HE0437-5439 11 WFC3/UVI ACCUM UVIS2 F850LP none none none none 2 397.0 S S HE0437-5439 12 WFC3/UVI ACCUM UVIS2 F850LP none none none none 2 397.0 S S 12503( 7) - 19-Oct-2012 15:13:17 - [ 10] Visit: 04 Visit Requirements: SCHED 60%; ORIENT 160D TO 160 D; AFTER 01-OCT-2012 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 SDSSJ091301 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.23702, .0+305120 S see below -0.13447; GS ACQ SCENARIO BASE1B3 ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ091301 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.11851, .0+305120 S see below -0.20786 ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ091301 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.25677, .0+305120 S see below 0.13586 ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ091301 WFC3/UVI ACCUM UVIS1 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.09876, .0+305120 S see below 0.24854 ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ091301 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.23702, .0+305120 S see below -0.13447 ------------------------------------------------------------------------------------------------------------------------------------ 6 SDSSJ091301 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.11851, .0+305120 S see below -0.20786 ------------------------------------------------------------------------------------------------------------------------------------ 7 SDSSJ091301 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG 0.25677, .0+305120 S see below 0.13586 ------------------------------------------------------------------------------------------------------------------------------------ 8 SDSSJ091301 WFC3/UVI ACCUM UVIS2 F814W CR-SPLIT=NO, FLASH=9 1 600 S POS TARG -0.09876, .0+305120 S see below 0.24854 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ091301.0+30512 1 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 604.0 S 0 S SDSSJ091301.0+30512 2 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 604.0 S 0 S SDSSJ091301.0+30512 3 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 604.0 S 0 S SDSSJ091301.0+30512 4 WFC3/UVI ACCUM UVIS1 F814W none none none none 1 604.0 S 0 S SDSSJ091301.0+30512 5 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 632.0 S 0 S 12503( 7) - 19-Oct-2012 15:13:17 - [ 11] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ091301.0+30512 6 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 632.0 S 0 S SDSSJ091301.0+30512 7 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 632.0 S 0 S SDSSJ091301.0+30512 8 WFC3/UVI ACCUM UVIS2 F814W none none none none 2 632.0 S 0 S 12503( 7) - 19-Oct-2012 15:13:17 - [ 12] Summary Form for Proposal 12503 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS1, UVIS2 ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO, FLASH=9 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01-OCT-2012, AFTER 01-SEP-2012, AFTER 15-SEP-2012, AFTER 30-SEP-2012, GS ACQ SCENARIO BASE1B3, ORIENT 160D TO 160 D, ORIENT 170.014702D TO 170.014702 D, ORIENT 234.941093D TO 234.941093 D, ORIENT 260.014702D TO 260.014702 D, ORIENT 278D TO 278 D, ORIENT 350.014702D TO 350.014702 D, ORIENT 54.941093D TO 54.941093 D, ORIENT 80.014702D TO 80.014702 D, ORIENT 98D TO 98 D, POS TARG -0.09876, 0.24854, POS TARG -0.23702, -0.13447, POS TARG -15, 0, POS TARG -25, 0, POS TARG -5, 0, POS TARG 0.11851, -0.20786, POS TARG 0.25677, 0.13586, POS TARG 15, 0, POS TARG 25, 0, POS TARG 5, 0, SCHED 60%, SCHED 70% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F814W, F850LP ------------------------------------------------------------------------------------------------------------------------------------ Target Names HE0437-5439, SDSSJ090745.0+024507, SDSSJ091301.0+305120, SDSSJ093320.86+441705.4 ------------------------------------------------------------------------------------------------------------------------------------