18360( 3) - 24-Aug-2026 15:42:19 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18360 Version: 3 Check-in Time: 24-Aug-2026 15:42:19 STScI Edit Number: 0 Title A Pilot HST Reverberation Mapping Campaign for a 30,000 Solar Mass Black Hole ------------------------------------------------------------------------------------ Type Cycle GO 34 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Hengxiao Guo Shanghai Astronomical Observatory, CAS Y CoI: Dr. Jingbo Sun Universiteit Leiden N CoI: Dr. Vivian U California Institute of Technology N CoI: Wenke Ren Shanghai Astronomical Observatory, CAS N CoI: Dr. Wenwen Zuo Chinese Academy of Sciences N CoI: Dr. Paulina Lira Universidad de Chile N CoI: Dr. Mar Mezcua Institute of Space Sciences (ICE-CSIC) N CoI: Prof. Luka C. Popovic Astronomical Observatory Belgrade N CoI: Dragana Davidovic University of Southern California N CoI: Dr. Joseph Masiero California Institute of Technology N CoI: Prof. Andjelka Kovacevic University of Belgrade N CoI: Prof. Alok C. Gupta Aryabhatta Research Institute of N Observational Sci CoI: Philip Edwards Australia Telescope National Facility, N CSIRO CoI: Dr. Shu Wang University of Southampton N CoI: Prof. Minfeng Gu Shanghai Astronomical Observatory, CAS N CoI: Dr. Paula Sanchez Saez European Southern Observatory - Germany N ------------------------------------------------------------------------------------ Abstract We propose a dedicated photometric reverberation mapping (RM) campaign targeting an intermediate-mass black hole (IMBH) using HST/WFC3 in a 30-day monitoring program. By conducting broad Balmer line RM of a nearby IMBH candidate with a single-epoch BH mass estimate of around 30, 000 solar mass, we aim to accurately measure its mass and confirm its IMBH nature. If successful, this would be the second IMBH confirmed via RM, and potentially the lowest-mass BH measured by this method. This campaign will demonstrate HST's unique capability to conduct RM for IMBHs with weak variability and short time lags, serving as a critical proof of concept for future space-based RM efforts. ------------------------------------------------------------------------------------ Observations Description ------------------------ We request 30 epochs of WFC3/UVIS imaging in three filters: F673N, F438W, and F621M, with exposure times of ~500, 600, and 1, 200 seconds per epoch, respectively. Each epoch fits within a single orbit, including all overheads. We also request a two-orbit STIS/G750M spectroscopic visit, with a total exposure time of ~4500 seconds and a spectral resolution of approximately 5, 000, to measure the contemporaneous H-alpha line width with a signal-to-noise ratio greater than 10. The program therefore requires 32 orbits in total. We request a nominal cadence of one epoch per day, with a tolerance of plus or 18360( 3) - 24-Aug-2026 15:42:19 - [ 2] minus 12 hours, over the 30-epoch monitoring campaign. According to the Phase II visibility tool, the target is observable between January 9 and April 27, 2027. If uninterrupted daily monitoring is difficult to schedule, one or two short gaps of 1 to 2 days would remain acceptable and should not significantly affect the lag measurement. ------------------------------------------------------------------------------------ 18360( 3) - 24-Aug-2026 15:42:19 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 RGG2013-123 GALAXY, SEYFERT RA=15H34M25.5883S, J2000 V = 18.22 DEC=+04D08'6.73" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 2.8273605629576544E-5 -4.1600003441999434E-4 1.874E-4 ------------------------------------------------------------------------------------------------------------------------------------ 18360( 3) - 24-Aug-2026 15:42:19 - [ 4] Visit: 01 (spec) Visit Requirements: BEFORE 26-APR-2027:00:00:00 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 RGG2013-123 STIS/CCD ACQ F28X50LP MIRROR 1 40 S (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 STIS/CCD ACCUM 52X0.2 G750M 6768 1 4474 S see below (4474 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A RGG2013-123 2 STIS/CCD ACCUM 52X0.2 G750M 6768 none none none 1 1 1925.0 S RGG2013-123 2 STIS/CCD ACCUM 52X0.2 G750M 6768 none none none 2 2 2549.0 S 18360( 3) - 24-Aug-2026 15:42:19 - [ 5] Visit: 02 (phot) Visit Requirements: NO SINGLE STAR GUIDING; BEFORE 01-MAR-2027:00:00:00 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 6] Visit: 03 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 02 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 7] Visit: 04 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 03 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 8] Visit: 05 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 04 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 9] Visit: 06 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 05 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 10] Visit: 07 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 06 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 11] Visit: 08 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 07 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 12] Visit: 09 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 08 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 13] Visit: 10 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 09 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 14] Visit: 11 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 10 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 15] Visit: 12 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 11 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 16] Visit: 13 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 12 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 17] Visit: 14 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 13 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 18] Visit: 15 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 14 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 19] Visit: 16 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 15 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 20] Visit: 17 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 16 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 21] Visit: 18 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 17 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 22] Visit: 19 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 18 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 23] Visit: 20 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 19 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 24] Visit: 21 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 20 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 25] Visit: 22 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 21 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 26] Visit: 23 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 22 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 27] Visit: 24 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 23 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 28] Visit: 25 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 24 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 29] Visit: 26 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 25 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 30] Visit: 27 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 26 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 31] Visit: 28 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 27 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 32] Visit: 29 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 28 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 33] Visit: 30 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 29 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG null, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 34] Visit: 31 (phot) Visit Requirements: NO SINGLE STAR GUIDING; AFTER 30 BY 12 H TO 36 H 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 RGG2013-123 WFC3/UVI ACCUM UVIS F438W FLASH=12 1 494 S (494 POS TARG 0.178, 12.406 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 RGG2013-123 WFC3/UVI ACCUM UVIS F621M FLASH=9 1 594 S (594 SAME POS AS 1 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 RGG2013-123 WFC3/UVI ACCUM UVIS F673N FLASH=13 1 1194 S SAME POS AS 1 S (1194 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 | ------------------------------------------------------------------------------------------------------------------------------------ RGG2013-123 1 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S RGG2013-123 2 WFC3/UVI ACCUM UVIS F621M none none none none 1 N/A S RGG2013-123 3 WFC3/UVI ACCUM UVIS F673N none none none none 1 N/A S 18360( 3) - 24-Aug-2026 15:42:19 - [ 35] Summary Form for Proposal 18360 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.2, F28X50LP, UVIS ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=12, FLASH=13, FLASH=9 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 02 BY 12 H TO 36 H, AFTER 03 BY 12 H TO 36 H, AFTER 04 BY 12 H TO 36 H, AFTER 05 BY 12 H TO 36 H, AFTER 06 BY 12 H TO 36 H, AFTER 07 BY 12 H TO 36 H, AFTER 08 BY 12 H TO 36 H, AFTER 09 BY 12 H TO 36 H, AFTER 10 BY 12 H TO 36 H, AFTER 11 BY 12 H TO 36 H, AFTER 12 BY 12 H TO 36 H, AFTER 13 BY 12 H TO 36 H, AFTER 14 BY 12 H TO 36 H, AFTER 15 BY 12 H TO 36 H, AFTER 16 BY 12 H TO 36 H, AFTER 17 BY 12 H TO 36 H, AFTER 18 BY 12 H TO 36 H, AFTER 19 BY 12 H TO 36 H, AFTER 20 BY 12 H TO 36 H, AFTER 21 BY 12 H TO 36 H, AFTER 22 BY 12 H TO 36 H, AFTER 23 BY 12 H TO 36 H, AFTER 24 BY 12 H TO 36 H, AFTER 25 BY 12 H TO 36 H, AFTER 26 BY 12 H TO 36 H, AFTER 27 BY 12 H TO 36 H, AFTER 28 BY 12 H TO 36 H, AFTER 29 BY 12 H TO 36 H, AFTER 30 BY 12 H TO 36 H, BEFORE 01-MAR-2027:00:00:00, BEFORE 26-APR-2027:00:00:00, NO SINGLE STAR GUIDING, POS TARG 0.178, 12.406, POS TARG null, 10, SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F438W, F621M, F673N, G750M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names RGG2013-123 ------------------------------------------------------------------------------------------------------------------------------------