18440( 2) - 19-Aug-2026 14:11:37 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18440 Version: 2 Check-in Time: 19-Aug-2026 14:11:37 STScI Edit Number: 1 Title Catch Them While They're Hot (And Then Not): An HST Search for Hot Failed Supernovae ------------------------------------------------------------------------------------ Type Cycle GO 34 ------------------------------------------------------------------------------------ Investigators Contact? PI: Maria Drout University of Toronto Y CoI: Shannon Bowes University of Toronto N CoI: Dr. Anna O'Grady Carnegie Mellon University N CoI: Dr. Avishai Gilkis University of Cambridge N CoI: Dr. Charles Kilpatrick Northwestern University N CoI: Dr. Eva Laplace Heidelberg Institute for Theoretical N Studies ------------------------------------------------------------------------------------ Abstract Through their lives and deaths, massive stars shape nearly every area of astrophysics: chemical enrichment, ionizing radiation, compact-object formation, and gravitational-wave sources. Recent binary population models coupled with neutrino-driven explosion calculations suggest that a large fraction of massive stars at solar metallicity---of order 20--40%---may end as direct collapse to a black hole without a successful supernova (a "failed supernova"), rather than as a normal core-collapse explosion. Observational campaigns to date have produced only a handful of candidate failed SNe and have largely relied on red/optical imaging, including the largest HST search to date in F814W. Yet the same class of models predicts that well over half of failed supernovae at solar metallicity should be hot, hydrogen-poor Wolf--Rayet progenitors, with spectral energy distributions peaked in the ultraviolet. Such progenitors are faint in the filters used by past surveys, so a large fraction of failed supernovae may have evaded detection. We propose WFC3/UVIS F336W monitoring of a sample of nearby galaxies that already have deep, multi-epoch ultraviolet imaging from HST, enabling a search for luminous blue stars that disappear between epochs. The combination of HST's angular resolution in crowded environments and its UV sensitivity is critical for this test and will yield new constraints on failed-supernova rates and their implications for black-hole formation and stellar feedback. ------------------------------------------------------------------------------------ Observations Description ------------------------ This program will obtain new WFC3 F336W images for 40 fields overlapping nearby galaxies in order to search for failed supernova (i.e. the collapse of a massive star without a luminous explosion). We specifically chose a blue filter in order to increase our sensitivity to hot massive stars (e.g. Wolf-Rayet stars) that could have been missed by previous suveys. Our fields were chosen such that they have (i) at least two epochs of prior HST F336W imaging and (ii) prior imaging in at least 3 filters spanning NUV to red-optical. This will allow for more detailed characterization of any candidate luminous massive star that is absent in our new observations. We do 18440( 2) - 19-Aug-2026 14:11:37 - [ 2] not specify orientations in order to facilitate scheduling in reduced gyro mode. We use the standard 4-point WFC3-UVIS-DITHER BOX pattern. ------------------------------------------------------------------------------------ 18440( 2) - 19-Aug-2026 14:11:37 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC0247 GALAXY, SPIRAL RA=00H47M10.3222S, J2000 V = 9.11 DEC=-20D46'9.47" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC1291-1 GALAXY, SPIRAL RA=03H17M17.5137S, J2000 V = 9.3 DEC=-41D03'52.20" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC1291-2 GALAXY, SPIRAL RA=03H16M58.5958S, J2000 V = 9.3 DEC=-41D04'46.47" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC1313-1 GALAXY, SPIRAL RA=03H18M29.9820S, J2000 V = 9.2 DEC=-66D28'40.49" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 5 IC1954 GALAXY, SPIRAL RA=03H31M31.8056S, J2000 V = 10.0 DEC=-51D54'14.15" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC1512-1 GALAXY, SPIRAL RA=04H03M55.6072S, J2000 V = 11.1 DEC=-43D20'43.77" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC1512-2 GALAXY, SPIRAL RA=04H03M34.0736S, J2000 V = 11.1 DEC=-43D23'42.26" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 8 NGC1566 GALAXY, SPIRAL RA=04H20M0.5300S, J2000 V = 10.33 DEC=-54D56'13.80" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC1637 GALAXY, SPIRAL RA=04H41M28.1784S, J2000 V = 16 DEC=-02D51'28.66" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 10 NGC1808 GALAXY, SPIRAL RA=05H07M42.3432S, J2000 V = 16 DEC=-37D30'46.98" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC2903-1 GALAXY, SPIRAL RA=09H32M10.9802S, J2000 V = 9.07 DEC=+21D30'19.61" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 12 NGC2903-2 GALAXY, SPIRAL RA=09H32M9.1387S, J2000 V = 9.07 DEC=+21D28'59.87" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 18440( 2) - 19-Aug-2026 14:11:37 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC2997-1 GALAXY, SPIRAL RA=09H45M32.5279S, J2000 V = 16 DEC=-31D11'26.11" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 14 NGC3031-1 GALAXY, SPIRAL RA=09H55M24.9499S, J2000 V = 16 DEC=+69D01'13.40" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 15 NGC3031-2 GALAXY, SPIRAL RA=09H56M7.7071S, J2000 V = 16 DEC=+69D06'58.13" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 16 NGC3031-3 GALAXY, SPIRAL RA=09H55M8.1055S, J2000 V = 16 DEC=+69D08'57.13" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 17 NGC3137 GALAXY, SPIRAL RA=10H09M7.4784S, J2000 V = 16 DEC=-29D03'51.48" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 18 NGC3351 GALAXY, SPIRAL RA=10H43M58.0001S, J2000 V = 9.73 DEC=+11D42'17.76" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 19 NGC3521-1 GALAXY, SPIRAL RA=11H05M50.4019S, J2000 V = 16 DEC=-00D03'3.58" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 20 NGC3521-2 GALAXY, SPIRAL RA=11H05M46.0654S, J2000 V = 16 DEC=-00D00'43.02" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 21 NGC3621 GALAXY, SPIRAL RA=11H18M19.2972S, J2000 V = 9.56 DEC=-32D49'55.26" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 22 NGC3627 GALAXY, SPIRAL RA=11H20M14.9400S, J2000 V = 9.65 DEC=+12D57'53.81" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 23 NGC4449-1 GALAXY, AMORPHOUS RA=12H28M13.6000S, J2000 V = 9.99 IRREGULAR DEC=+44D05'35.14" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 24 NGC4449-2 GALAXY, AMORPHOUS RA=12H28M6.7663S, J2000 V = 9.99 IRREGULAR DEC=+44D05'6.10" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 18440( 2) - 19-Aug-2026 14:11:37 - [ 5] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 25 NGC4490-1 GALAXY, SPIRAL RA=12H30M36.1399S, J2000 V = 10.22 DEC=+41D38'30.40" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 26 NGC4490-2 GALAXY, SPIRAL RA=12H30M40.8000S, J2000 V = 10.22 DEC=+41D38'14.50" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 27 NGC4536-1 GALAXY, SPIRAL RA=12H34M29.9575S, J2000 V = 10.55 DEC=+02D10'58.04" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 28 NGC4781 GALAXY, SPIRAL RA=12H54M23.8008S, J2000 V = 16 DEC=-10D32'13.63" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 29 NGC5248 GALAXY, SPIRAL RA=13H37M32.0690S, J2000 V = 10.0 DEC=+08D53'6.22" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 30 IC5273 GALAXY, SPIRAL RA=22H59M26.4432S, J2000 V = 16 DEC=-37D42'19.58" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 31 NGC7793-1 GALAXY, SPIRAL RA=23H57M40.8600S, J2000 V = 9.89 DEC=-32D35'20.60" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 32 NGC7793-2 GALAXY, SPIRAL RA=23H57M51.2251S, J2000 V = 9.89 DEC=-32D35'13.90" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 33 NGC7793-3 GALAXY, SPIRAL RA=23H57M59.9400S, J2000 V = 9.89 DEC=-32D33'20.90" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 34 NGC7793-4 GALAXY, SPIRAL RA=23H58M4.6567S, J2000 V = 9.89 DEC=-32D36'8.44" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 35 NGC0685 GALAXY, SPIRAL RA=01H47M43.0136S, J2000 V = 10.0 DEC=-52D45'50.48" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 36 NGC1365 GALAXY, SPIRAL RA=03H33M37.3532S, J2000 V = 9.63 DEC=-36D08'35.06" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 18440( 2) - 19-Aug-2026 14:11:37 - [ 6] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 37 NGC2283 GALAXY, SPIRAL RA=06H45M52.7928S, J2000 V = 16 DEC=-18D12'38.88" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 38 NGC4496A GALAXY, SPIRAL RA=12H31M39.9624S, J2000 V = 16 DEC=+03D56'19.86" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 39 NGC7331-1 GALAXY, SPIRAL RA=22H37M5.5999S, J2000 V = 9.48 DEC=+34D24'31.90" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 40 NGC7331-2 GALAXY, SPIRAL RA=22H37M4.0805S, J2000 V = 9.48 DEC=+34D25'29.10" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 41 NGC4536-2 GALAXY, SPIRAL RA=12H34M20.1783S, J2000 V = 10.55 DEC=+02D12'11.65" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 42 NGC2997-2 GALAXY, RADIO GALAXY, RA=09H45M44.5683S, J2000 V = 16 SPIRAL DEC=-31D11'24.92" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 43 NGC1313-2 GALAXY, SPIRAL RA=03H18M9.6085S, J2000 V = 9.2 DEC=-66D30'3.47" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 18440( 2) - 19-Aug-2026 14:11:37 - [ 7] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.173 Line_Spacing 0.112 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 18440( 2) - 19-Aug-2026 14:11:37 - [ 8] Visit: 01 (NGC0247) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC0247 WFC3/UVI ACCUM UVIS-FIX F336W FLASH=15 1 564 S PATTERN 1 1 S (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC0247 1 WFC3/UVI ACCUM UVIS-FIX F336W 1 none none none 1 N/A S NGC0247 1 WFC3/UVI ACCUM UVIS-FIX F336W 2 none none none 1 N/A S NGC0247 1 WFC3/UVI ACCUM UVIS-FIX F336W 3 none none none 1 N/A S NGC0247 1 WFC3/UVI ACCUM UVIS-FIX F336W 4 none none none 1 N/A S 18440( 2) - 19-Aug-2026 14:11:37 - [ 9] Visit: 02 (NGC1921-POS1) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1291-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 570 S PATTERN 1 1 S ER (2280 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1291-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1291-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1291-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1291-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 10] Visit: 03 (NGC1912-POS2) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1291-2 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 570 S PATTERN 1 1 S ER (2280 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1291-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1291-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1291-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1291-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 11] Visit: 04 (NGC1313-POS1) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1313-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 593 S PATTERN 1 1 S ER (2372 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1313-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1313-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1313-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1313-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 12] Visit: 05 (IC1954) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IC1954 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 576 S PATTERN 1 1 S ER (2304 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 | ------------------------------------------------------------------------------------------------------------------------------------ IC1954 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER IC1954 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER IC1954 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER IC1954 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 13] Visit: 06 (NGC1512-POS1) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1512-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 570 S PATTERN 1 1 S ER (2280 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1512-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1512-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1512-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1512-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 14] Visit: 07 (NGC1512-POS2) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1512-2 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 570 S PATTERN 1 1 S ER (2280 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1512-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1512-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1512-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1512-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 15] Visit: 08 (NGC1566) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1566 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 576 S PATTERN 1 1 S ER (2304 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1566 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1566 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1566 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1566 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 16] Visit: 09 (NGC1637) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1637 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 564 S PATTERN 1 1 S ER (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1637 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1637 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1637 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1637 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 17] Visit: 10 (NGC1808) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1808 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 568 S PATTERN 1 1 S ER (2272 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1808 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1808 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1808 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1808 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 18] Visit: 11 (NGC2903-POS1) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC2903-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 564 S PATTERN 1 1 S ER (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC2903-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC2903-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC2903-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC2903-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 19] Visit: 12 (NGC2903-POS2) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC2903-2 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 564 S PATTERN 1 1 S ER (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC2903-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC2903-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC2903-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC2903-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 20] Visit: 13 (NGC2997-POS1) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC2997-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 566 S PATTERN 1 1 S ER (2264 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC2997-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC2997-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC2997-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC2997-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 21] Visit: 14 (NGC3031-POS1) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3031-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 593 S PATTERN 1 1 S ER (2372 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3031-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC3031-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC3031-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC3031-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 22] Visit: 15 (NGC3031-POS2) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3031-2 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 593 S PATTERN 1 1 S ER (2372 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3031-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC3031-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC3031-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC3031-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 23] Visit: 16 (NGC3031-POS3) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3031-3 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 593 S PATTERN 1 1 S ER (2372 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3031-3 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC3031-3 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC3031-3 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC3031-3 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 24] Visit: 17 (NGC3137) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3137 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 565 S PATTERN 1 1 S ER (2260 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3137 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC3137 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC3137 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC3137 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 25] Visit: 18 (NGC3351) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3351 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 563 S PATTERN 1 1 S ER (2252 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3351 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC3351 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC3351 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC3351 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 26] Visit: 19 (NGC3521-POS1) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3521-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 564 S PATTERN 1 1 S ER (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3521-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC3521-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC3521-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC3521-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 27] Visit: 20 (NGC3521-POS2) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3521-2 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 564 S PATTERN 1 1 S ER (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3521-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC3521-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC3521-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC3521-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 28] Visit: 21 (NGC3621) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3621 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 566 S PATTERN 1 1 S ER (2264 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3621 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC3621 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC3621 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC3621 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 29] Visit: 22 (NGC3627) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC3627 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 563 S PATTERN 1 1 S ER (2252 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC3627 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC3627 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC3627 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC3627 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 30] Visit: 23 (NGC4449) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC4449-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 570 S PATTERN 1 1 S ER (2280 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC4449-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC4449-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC4449-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC4449-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 31] Visit: 24 (NGC4490) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC4490-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 570 S PATTERN 1 1 S ER (2280 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC4490-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC4490-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC4490-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC4490-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 32] Visit: 25 (NGC4536-POS1) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC4536-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 564 S PATTERN 1 1 S ER (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC4536-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC4536-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC4536-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC4536-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 33] Visit: 26 (NGC4536-POS2) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC4536-2 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 564 S PATTERN 1 1 S ER (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC4536-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC4536-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC4536-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC4536-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 34] Visit: 27 (NGC4781) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC4781 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 563 S PATTERN 1 1 S ER (2252 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC4781 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC4781 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC4781 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC4781 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 35] Visit: 28 (NGC5248) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5248 WFC3/UVI ACCUM UVIS-FIX F336W FLASH=15 1 564 S PATTERN 1 1 S (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC5248 1 WFC3/UVI ACCUM UVIS-FIX F336W 1 none none none 1 N/A S NGC5248 1 WFC3/UVI ACCUM UVIS-FIX F336W 2 none none none 1 N/A S NGC5248 1 WFC3/UVI ACCUM UVIS-FIX F336W 3 none none none 1 N/A S NGC5248 1 WFC3/UVI ACCUM UVIS-FIX F336W 4 none none none 1 N/A S 18440( 2) - 19-Aug-2026 14:11:37 - [ 36] Visit: 29 (IC5273) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 IC5273 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 568 S PATTERN 1 1 S ER (2272 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 | ------------------------------------------------------------------------------------------------------------------------------------ IC5273 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER IC5273 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER IC5273 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER IC5273 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 37] Visit: 30 (NGC7793-POS1) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC7793-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 566 S PATTERN 1 1 S ER (2264 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC7793-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC7793-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC7793-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC7793-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 38] Visit: 31 (NGC7793-POS2) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC7793-2 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 566 S PATTERN 1 1 S ER (2264 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC7793-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC7793-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC7793-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC7793-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 39] Visit: 32 (NGC685) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC0685 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 576 S PATTERN 1 1 S ER (2304 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC0685 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC0685 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC0685 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC0685 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 40] Visit: 33 (NGC1365) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1365 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 568 S PATTERN 1 1 S ER (2272 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1365 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1365 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1365 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1365 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 41] Visit: 34 (NGC2283) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC2283 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 564 S PATTERN 1 1 S ER (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC2283 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC2283 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC2283 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC2283 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 42] Visit: 35 (NGC4496A) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC4496A WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 564 S PATTERN 1 1 S ER (2256 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC4496A 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC4496A 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC4496A 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC4496A 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 43] Visit: 36 (NGC7331) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC7331-1 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 566 S PATTERN 1 1 S ER (2264 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC7331-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC7331-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC7331-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC7331-1 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 44] Visit: 37 (NGC2997-POS2) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC2997-2 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 566 S PATTERN 1 1 S ER (2264 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC2997-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC2997-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC2997-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC2997-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 45] Visit: 38 (NGC1313-POS2) Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1313-2 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=15 1 593 S PATTERN 1 1 S ER (2372 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1313-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 N/A S TER NGC1313-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 1 N/A S TER NGC1313-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 1 N/A S TER NGC1313-2 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 1 N/A S TER 18440( 2) - 19-Aug-2026 14:11:37 - [ 46] Summary Form for Proposal 18440 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS-CENTER, UVIS-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=15 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F336W ------------------------------------------------------------------------------------------------------------------------------------ Target Names IC1954, IC5273, NGC0247, NGC0685, NGC1291-1, NGC1291-2, NGC1313-1, NGC1313-2, NGC1365, NGC1512-1, NGC1512-2, NGC1566, NGC1637, NGC1808, NGC2283, NGC2903-1, NGC2903-2, NGC2997-1, NGC2997-2, NGC3031-1, NGC3031-2, NGC3031-3, NGC3137, NGC3351, NGC3521-1, NGC3521-2, NGC3621, NGC3627, NGC4449-1, NGC4490-1, NGC4496A, NGC4536-1, NGC4536-2, NGC4781, NGC5248, NGC7331-1, NGC7793-1, NGC7793-2 ------------------------------------------------------------------------------------------------------------------------------------