17820( 10) - 22-Jul-2025 15:35:36 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17820 Version: 10 Check-in Time: 22-Jul-2025 15:35:36 STScI Edit Number: 2 Title First mass measurement of black holes in a globular cluster ------------------------------------------------------------------------------------ Type Cycle GO 32 ------------------------------------------------------------------------------------ Investigators Contact? PI: Casey Lam Carnegie Institution of Washington Y CoI: Dr. Kyle Kremer University of California - San Diego Y CoI: Dr. Andrea Bellini Space Telescope Science Institute N CoI: Dr. Mattia Libralato INAF - Osservatorio Astronomico di Padova N CoI: Dr. Kareem El-Badry California Institute of Technology N ------------------------------------------------------------------------------------ Abstract We propose to perform astrometric follow-up of two black hole candidates in the Galactic globular cluster NGC 3201. Globular clusters are dense and dynamic stellar systems that are expected to harbor populations of stellar mass black holes. These black holes play an important role in the evolution of the cluster, as well as sourcing a variety of high-energy phenomena, such as binary black hole mergers. Two black hole candidates were identified through a radial velocity survey of the nearby globular cluster NGC 3201. However, because of a degeneracy between the orbital inclination and mass, only a lower limit on the black hole candidate masses can be derived from the existing radial velocities. In contrast, an astrometric orbit can break this degeneracy and enable a direct mass measurement of these black holes. We propose to use HST WFC3-UVIS imaging to obtain 10 measurements with an astrometric precision of 0.1 - 0.2 mas in order to map out the orbits of the two black hole candidates, measure their orbital inclinations, and most importantly, their masses. This will lead to the first mass measurement of black holes in a globular cluster, which will enable comparisons to the properties of black holes in field environments, insight into gravitational wave sources, and the dynamical evolution of globular clusters. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will obtain 10 epochs of WFC3-UVIS imaging of NGC 3201 BH1 and BH2 in order to measure their orbital motions and their masses. We will use the F606W filter and the UVIS2-2K2C-SUB subarray. For the observations, we wil dither small amounts (approximately 10 pixels) to sample the pixel phase, mitigate the effect of bad pixels, and maximize the SNR without saturating our brighter target (F606W = 17.57). ------------------------------------------------------------------------------------ 17820( 10) - 22-Jul-2025 15:35:36 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-3201 STELLAR CLUSTER, RA=10H17M36.5856S, J2000 V = 18.6 GLOBULAR CLUSTER DEC=-46D25'14.20" Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 2.22E-4 ------------------------------------------------------------------------------------------------------------------------------------ 17820( 10) - 22-Jul-2025 15:35:36 - [ 3] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type SPIRAL Pattern_Purpose DITHER Number_Of_Points 8 Point_Spacing 0.38 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 45 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 17820( 10) - 22-Jul-2025 15:35:36 - [ 4] Visit: 01 Visit Requirements: BETWEEN 15-NOV-2024:00:00:00 AND 30-NOV-2024:00:00:00 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 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 120 S (960 PATTERN 1 1 S C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 N/A S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 5] Visit: 02 Visit Requirements: BETWEEN 12-DEC-2024:00:00:00 AND 16-DEC-2024:00:00:00 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 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 140 S PATTERN 1 1 S C-SUB (1120 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 N/A S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 6] Visit: 03 Visit Requirements: BETWEEN 07-JAN-2025:00:00:00 AND 11-JAN-2025:00:00:00 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 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 140 S PATTERN 1 1 S C-SUB (1120 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 N/A S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 7] Visit: 04 Visit Requirements: BETWEEN 31-JAN-2025:00:00:00 AND 04-FEB-2025:00:00:00 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 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 140 S PATTERN 1 1 S C-SUB (1120 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 N/A S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 8] Visit: 05 Visit Requirements: BETWEEN 19-MAR-2025:00:00:00 AND 24-MAR-2025:00:00:00 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 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 140 S PATTERN 1 1 S C-SUB (1120 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 N/A S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 9] Visit: 06 Visit Requirements: ORIENT 124D TO 135 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 140 S PATTERN 1 1 S C-SUB see below (1272 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 159.0 S S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 159.0 S S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 159.0 S S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 159.0 S S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 159.0 S S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 159.0 S S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 159.0 S S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 159.0 S S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 10] Visit: 07 Visit Requirements: BETWEEN 20-JUL-2025:00:00:00 AND 24-JUL-2025:00:00:00 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 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 120 S (960 PATTERN 1 1 S C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 N/A S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 11] Visit: 08 Visit Requirements: BETWEEN 04-AUG-2025:00:00:00 AND 09-AUG-2025:00:00:00 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 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 120 S (960 PATTERN 1 1 S C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 N/A S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 12] Visit: 09 Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 04-NOV-2025:00:00:00 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 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 120 S (960 PATTERN 1 1 S C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 N/A S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 13] Visit: 10 Visit Requirements: ORIENT 280D TO 300 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-3201 WFC3/UVI ACCUM UVIS2-2K2 F606W FLASH=40 1 120 S (960 PATTERN 1 1 S C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 1 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 2 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 3 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 4 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 5 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 6 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 7 none none none 1 N/A S 2C-SUB NGC-3201 1 WFC3/UVI ACCUM UVIS2-2K F606W 8 none none none 1 N/A S 2C-SUB 17820( 10) - 22-Jul-2025 15:35:36 - [ 14] Summary Form for Proposal 17820 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2-2K2C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=40 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 01-NOV-2025:00:00:00 AND 04-NOV-2025:00:00:00, BETWEEN 04-AUG-2025:00:00:00 AND 09-AUG-2025:00:00:00, BETWEEN 07-JAN-2025:00:00:00 AND 11-JAN-2025:00:00:00, BETWEEN 12-DEC-2024:00:00:00 AND 16-DEC-2024:00:00:00, BETWEEN 15-NOV-2024:00:00:00 AND 30-NOV-2024:00:00:00, BETWEEN 19-MAR-2025:00:00:00 AND 24-MAR-2025:00:00:00, BETWEEN 20-JUL-2025:00:00:00 AND 24-JUL-2025:00:00:00, BETWEEN 31-JAN-2025:00:00:00 AND 04-FEB-2025:00:00:00, ORIENT 124D TO 135 D, ORIENT 280D TO 300 D, PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F606W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC-3201 ------------------------------------------------------------------------------------------------------------------------------------