14528( 3) - 21-Jun-2016 15:08:20 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14528 Version: 3 Check-in Time: 21-Jun-2016 15:08:20 STScI Edit Number: 0 Title Caustic Crossing of a Strongly Lensed Massive Star ------------------------------------------------------------------------------------ Type Cycle GO/DD 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Patrick Kelly University of California - Berkeley Y CoI: Dr. Steven A. Rodney University of South Carolina Research N Foundation CoI: Dr. Jose M. Diego Instituto de Fisica de Cantabria N CoI: Prof. thomas J. broadhurst University of the Basque Country N CoI: Prof. Masamune Oguri Institute for Physics and Mathematics of N the Universe CoI: Dr. Adi Zitrin California Institute of Technology N CoI: Dr. Saurabh W. Jha Rutgers the State University of New Jersey N CoI: Mr. Jonatan Selsing University of Copenhagen, Niels Bohr N Institute CoI: Prof. Jean-Paul Richard Kneib Ecole Polytechnique Federale de Lausanne N CoI: Dr. Mathilde Jauzac Durham Univ. N CoI: Dr. Brenda Louise Frye University of Arizona N CoI: Prof. Alex V. Filippenko University of California - Berkeley N CoI: Dr. Nathan Smith University of Arizona N CoI: Dr. Adam Riess The Johns Hopkins University N CoI: Dr. Benjamin Weiner University of Arizona N CoI: Dr. Laurent Pueyo Space Telescope Science Institute N CoI: Dr. Colin A. Norman The Johns Hopkins University N CoI: Dr. Stephen Bradley Cenko NASA Goddard Space Flight Center N CoI: Prof. Pablo G. Perez-Gonzalez Universidad Complutense de Madrid N CoI: Dr. Alberto Molino Molino Instituto de Astronomia, Geofisica e N Ciencias Atmosfericas ------------------------------------------------------------------------------------ Abstract During a WFC3-IR visit to the MACS J1149 galaxy-cluster field in late April, we discovered a new transient approximately 5 arcseconds from the reappearance of SN Refsdal. The new object lies at the intersection of a star-forming arm of the host-galaxy of SN Refsdal at redshift z=1.49 and the critical curve of the galaxy cluster (<0.1 arcsec). Applying orbits from the RefsdalRedux program, we now have a light curve spanning several months which shows a sustained rise followed by multiple abrupt (< 2 days) changes in flux of ~1 magnitude. To determine the nature of the lensed source, we acquired optical imaging with the FrontierSN program and the rest-frame UV-through-optical spectral energy distribution is consistent with that of a B supergiant star with a pronounced Balmer break at redshift z=1.49. We have concluded that the object is likely the first example of a star observed crossing a cluster caustic and is probably magnified by a factor of hundreds of thousands to more than a million. We propose observations which will explain the origin of the strong fluctuations in the transient's light curve, and constrain the composition of dark matter as well as the population of stars and planets in the intracluster medium. 14528( 3) - 21-Jun-2016 15:08:20 - [ 2] ------------------------------------------------------------------------------------ Observations Description ------------------------ To construct the light curve and improve constraints on the spectral energy distribution of the likely caustic-crossing event in the MACS1149 galaxy-cluster field, the program will acquire WFC3 imaging in five separate single-orbit visits beginning the week of July 11th through July 23rd 2016. Three of the visits will have an even split between WFC3-IR F125W and WFC3-IR F160W integrations to provide a match with observations from the RefsdalRedux program (PID: 14199), while the remaining two will be evenly split between WFC3-IR F125W and WFC3-UVIS F606W. The WFC3-IR F125W and WFC3-UVIS F606W observations will span the clear Balmer break and confirm early observations indicating that the SED does not show substantial change, as expected for gravitational lensing. ------------------------------------------------------------------------------------ 14528( 3) - 21-Jun-2016 15:08:20 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 CAUSTICCROSS EXT-STAR, B6-B9.5 III-I RA=11H49M35.6580S, J2000 V = 26 +/- 5 Transient source is INGCANDIDATE DEC=+22D23'48.04" changing in brightness rapidly. Current J Band magnitude ~ 26 AB. Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 14528( 3) - 21-Jun-2016 15:08:20 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.135 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 14528( 3) - 21-Jun-2016 15:08:20 - [ 5] Visit: 01 (Caustic Crossing F125W/F606W 7/11) Visit Requirements: SCHED 100%; ORIENT 107D TO 108 D; BETWEEN 11-JUL-2016:00:00:00 AND 12-JUL-2016:00:00:00 On Hold Comments: Additional Comments: 3 short WFC3-IR F125W and 3 short WFC3-UVIS F606W exposures of the caustic-crossing event in MACS1149. preferred orient = 107 or 109 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 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF GS ACQ SCENARIO ONEB1B3 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=8, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (352.935 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=8, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (352.935 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CAUSTICCROS WFC3/UVI ACCUM UVIS F606W 1 370 S PATTERN 1 4 SINGCANDIDA S see below TE (1136 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAUSTICCROSSINGCAND 1 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 2 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 3 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 4 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 383 S IDATE S CAUSTICCROSSINGCAND 4 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 383 S IDATE S CAUSTICCROSSINGCAND 4 WFC3/UVI ACCUM UVIS F606W 3 none none none 1 370.0 S IDATE S 14528( 3) - 21-Jun-2016 15:08:20 - [ 6] Visit: 02 (Caustic Crossing F125W/F160W 7/14) Visit Requirements: SCHED 100%; ORIENT 107D TO 108 D; BETWEEN 14-JUL-2016:00:00:00 AND 15-JUL-2016:00:00:00 On Hold Comments: Additional Comments: 3 short WFC3-IR F125W and 3 short WFC3-IR F160W exposures of the caustic-crossing event in MACS1149. preferred orient = 107 or 109 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 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF GS ACQ SCENARIO ONEB1B3 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.451, 0.403 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CAUSTICCROS WFC3/IR MULTIAC IR F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CAUSTICCROS WFC3/IR MULTIAC IR F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 1.353, 1.209 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 6 CAUSTICCROS WFC3/IR MULTIAC IR F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 1.804, 1.612 SINGCANDIDA CUM (402.936 TE 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAUSTICCROSSINGCAND 1 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 2 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 3 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 4 WFC3/IR MULTIAC IR F160W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 5 WFC3/IR MULTIAC IR F160W none none none none 1 N/A IDATE CUM 14528( 3) - 21-Jun-2016 15:08:20 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAUSTICCROSSINGCAND 6 WFC3/IR MULTIAC IR F160W none none none none 1 N/A IDATE CUM 14528( 3) - 21-Jun-2016 15:08:20 - [ 8] Visit: 03 (Caustic Crossing F125W/F160W 7/17) Visit Requirements: SCHED 100%; ORIENT 97D TO 103 D; BETWEEN 17-JUL-2016:00:00:00 AND 18-JUL-2016:00:00:00 On Hold Comments: Additional Comments: 3 short WFC3-IR F125W and 3 short WFC3-IR F160W exposures of the caustic-crossing event in MACS1149. preferred orient = 102.1 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 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF GS ACQ SCENARIO ONEB1B3 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.451, 0.403 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CAUSTICCROS WFC3/IR MULTIAC IR F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CAUSTICCROS WFC3/IR MULTIAC IR F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 1.353, 1.209 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 6 CAUSTICCROS WFC3/IR MULTIAC IR F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 1.804, 1.612 SINGCANDIDA CUM (402.936 TE 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAUSTICCROSSINGCAND 1 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 2 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 3 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 4 WFC3/IR MULTIAC IR F160W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 5 WFC3/IR MULTIAC IR F160W none none none none 1 N/A IDATE CUM 14528( 3) - 21-Jun-2016 15:08:20 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAUSTICCROSSINGCAND 6 WFC3/IR MULTIAC IR F160W none none none none 1 N/A IDATE CUM 14528( 3) - 21-Jun-2016 15:08:20 - [ 10] Visit: 04 (Caustic Crossing F125W/F160W 7/20) Visit Requirements: SCHED 100%; ORIENT 97D TO 103 D; BETWEEN 20-JUL-2016:00:00:00 AND 21-JUL-2016:00:00:00 On Hold Comments: Additional Comments: 3 short WFC3-IR F125W and 3 short WFC3-IR F160W exposures of the caustic-crossing event in MACS1149. preferred orient = 102.1 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 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF GS ACQ SCENARIO ONEB1B3 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.451, 0.403 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CAUSTICCROS WFC3/IR MULTIAC IR F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CAUSTICCROS WFC3/IR MULTIAC IR F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 1.353, 1.209 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 6 CAUSTICCROS WFC3/IR MULTIAC IR F160W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF POS TARG 1.804, 1.612 SINGCANDIDA CUM (402.936 TE 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAUSTICCROSSINGCAND 1 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 2 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 3 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 4 WFC3/IR MULTIAC IR F160W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 5 WFC3/IR MULTIAC IR F160W none none none none 1 N/A IDATE CUM 14528( 3) - 21-Jun-2016 15:08:20 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAUSTICCROSSINGCAND 6 WFC3/IR MULTIAC IR F160W none none none none 1 N/A IDATE CUM 14528( 3) - 21-Jun-2016 15:08:20 - [ 12] Visit: 05 (Caustic Crossing F125W/F606W 7/23) Visit Requirements: SCHED 100%; ORIENT 97D TO 103 D; BETWEEN 23-JUL-2016:00:00:00 AND 24-JUL-2016:00:00:00 On Hold Comments: Additional Comments: 3 short WFC3-IR F125W and 3 short WFC3-UVIS F606W exposures of the caustic-crossing event in MACS1149. preferred orient = 102.1 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 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=9, SAMP-SEQ=SPARS50 1 DEF GS ACQ SCENARIO ONEB1B3 SINGCANDIDA CUM (402.936 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=8, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (352.935 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CAUSTICCROS WFC3/IR MULTIAC IR F125W NSAMP=8, SAMP-SEQ=SPARS50 1 DEF POS TARG 0.902, 0.806 SINGCANDIDA CUM (352.935 TE S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CAUSTICCROS WFC3/UVI ACCUM UVIS F606W 1 370 S PATTERN 1 4 SINGCANDIDA S see below TE (1136 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 | ------------------------------------------------------------------------------------------------------------------------------------ CAUSTICCROSSINGCAND 1 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 2 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 3 WFC3/IR MULTIAC IR F125W none none none none 1 N/A IDATE CUM CAUSTICCROSSINGCAND 4 WFC3/UVI ACCUM UVIS F606W 1 none none none 1 383 S IDATE S CAUSTICCROSSINGCAND 4 WFC3/UVI ACCUM UVIS F606W 2 none none none 1 383 S IDATE S CAUSTICCROSSINGCAND 4 WFC3/UVI ACCUM UVIS F606W 3 none none none 1 370.0 S IDATE S 14528( 3) - 21-Jun-2016 15:08:20 - [ 13] Summary Form for Proposal 14528 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR, UVIS ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=8, NSAMP=9, SAMP-SEQ=SPARS50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 11-JUL-2016:00:00:00 AND 12-JUL-2016:00:00:00, BETWEEN 14-JUL-2016:00:00:00 AND 15-JUL-2016:00:00:00, BETWEEN 17-JUL-2016:00:00:00 AND 18-JUL-2016:00:00:00, BETWEEN 20-JUL-2016:00:00:00 AND 21-JUL-2016:00:00:00, BETWEEN 23-JUL-2016:00:00:00 AND 24-JUL-2016:00:00:00, GS ACQ SCENARIO ONEB1B3, ORIENT 107D TO 108 D, ORIENT 97D TO 103 D, PATTERN 1 4, POS TARG 0.451, 0.403, POS TARG 0.902, 0.806, POS TARG 1.353, 1.209, POS TARG 1.804, 1.612, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F125W, F160W, F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names CAUSTICCROSSINGCANDIDATE ------------------------------------------------------------------------------------------------------------------------------------