18438( 5) - 05-Oct-2026 18:00:16 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18438 Version: 5 Check-in Time: 05-Oct-2026 18:00:16 STScI Edit Number: 2 Title Late-Time HST Imaging of Nearby Supernovae: Toward a Legacy Sample of Supernova Progenitors ------------------------------------------------------------------------------------ Type Cycle SNAP 34 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Christoffer Fremling California Institute of Technology Y CoI: Dr. Kaustav Kashyap Das Harvard and Smithsonian Center for N Astrophysics CoI: Dr. Yu-jing Qin California Institute of Technology Y ------------------------------------------------------------------------------------ Abstract We propose an HST snapshot program to obtain late-time high-resolution imaging of nearby supernova sites with deep pre-explosion images from HST and JWST. Over the past three decades, archival space-based imaging has enabled the direct detection of SN progenitors, providing a unique link between stellar evolution theories and supernova subtypes. However, progress remains limited by the lack of late-time observations required to confirm progenitor candidates, characterize their properties, or place robust upper limits. We target recent SNe within 40 Mpc that either lack adequate post-explosion imaging or have reported progenitor candidates requiring final confirmation. Each observation yields a decisive outcome: either identifying a progenitor candidate through precise astrometric registration, confirming or rejecting a literature candidate via disappearance or dimming, or constraining residual emission from circumstellar interaction, surviving companions, or bound remnants. The proposed program will transform a large but underexploited archival dataset into a homogeneous and well-vetted sample of progenitor detections and limits across different SN subtypes. The resulting sample will enable critical tests of stellar evolution and explosion models, including the statistical significance of the red supergiant problem in SNe II and the progenitor channels of stripped-envelope SNe. Because the nearby SN rate is intrinsically limited, each well-chosen late-time epoch has lasting value. This program will establish a legacy dataset that directly links progenitor systems to the diversity of SN outcomes. ------------------------------------------------------------------------------------ Observations Description ------------------------ The proposed HST snapshot program will use WFC3 to obtain late-time imaging of nearby supernova sites, with the aim of recovering supernova progenitors in pre-explosion images or confirming claimed progenitor candidates in the literature through their final disappearance. The sample consists of 25 nearby SNe within 40 Mpc, including 14 cases lacking adequate post-explosion space-based imaging to precisely localize their progenitors and 11 cases with reported progenitor candidates requiring confirmation through disappearance or dimming. We will observe one target per orbit, and all observations will use either WFC3/UVIS or ACS/WFC, in the same filter (F555W or redder) as the deepest pre-explosion images. For brighter targets, the orbit may be split into 18438( 5) - 05-Oct-2026 18:00:16 - [ 2] multiple exposures in filters matched to the pre-explosion images when sufficient signal-to-noise ratio can be achieved. For fainter targets, we extend the exposure time to ensure a robust test of disappearance or fading in a single filter, while keeping the total exposure time within one orbit. This strategy ensures that each visit provides a decisive constraint on the presence or absence of the progenitor. ------------------------------------------------------------------------------------ 18438( 5) - 05-Oct-2026 18:00:16 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2022ACKO EXT-STAR, SUPERNOVA RA=03H19M38.9899S, J2000 F814W > 26.33 ABMAG (local pre-SN DEC=-19D23'42.68" 5-sigma limit) Reference Frame: ICRS Comments: NGC 1300, SN II, z=0.005264 ------------------------------------------------------------------------------------------------------------------------------------ 3 SN2017GKK EXT-STAR, SUPERNOVA RA=09H13M44.5699S, J2000 F814W > 25.15 ABMAG (local pre-SN DEC=+76D28'44.54" 5-sigma limit) Reference Frame: ICRS Comments: NGC 2748, SN IIb, z=0.004923 ------------------------------------------------------------------------------------------------------------------------------------ 4 SN2022CRV EXT-STAR, SUPERNOVA RA=09H54M25.9099S, J2000 F606W > 26.33 ABMAG (local pre-SN DEC=-25D42'11.16" 5-sigma limit) Reference Frame: ICRS Comments: NGC 3054, SN Ib, z=0.008091 ------------------------------------------------------------------------------------------------------------------------------------ 5 SN2019YVR EXT-STAR, SUPERNOVA RA=12H45M8.1353S, J2000 F814W > 24.58 ABMAG (local pre-SN DEC=-00D27'32.83" 5-sigma limit) Reference Frame: ICRS Comments: NGC 4666, SN Ib, z=0.005047 ------------------------------------------------------------------------------------------------------------------------------------ 6 SN2013DF EXT-STAR, SUPERNOVA RA=12H26M29.3300S, J2000 F814W > 25.48 ABMAG (local pre-SN DEC=+31D13'38.30" 5-sigma limit) Reference Frame: ICRS Comments: NGC 4414, SN IIb, z=0.002362 ------------------------------------------------------------------------------------------------------------------------------------ 7 SN2016COK EXT-STAR, SUPERNOVA RA=11H20M19.0329S, J2000 F814W > 25.12 ABMAG (local pre-SN DEC=+12D58'56.64" 5-sigma limit) Reference Frame: ICRS Comments: MESSIER 066, SN IIP, z=0.002408 ------------------------------------------------------------------------------------------------------------------------------------ 8 SN2020JFO EXT-STAR, SUPERNOVA RA=12H21M50.4799S, J2000 F814W > 25.68 ABMAG (local pre-SN DEC=+04D28'54.05" 5-sigma limit) Reference Frame: ICRS Comments: MESSIER 061, SN II, z=0.005224 ------------------------------------------------------------------------------------------------------------------------------------ 9 SN2024ABFL EXT-STAR, SUPERNOVA RA=06H18M1.1400S, J2000 F814W > 26.35 ABMAG (local pre-SN DEC=+78D22'1.52" 5-sigma limit) Reference Frame: ICRS Comments: NGC 2146, SN II, z=0.002999 ------------------------------------------------------------------------------------------------------------------------------------ 10 SN2026FOV EXT-STAR, SUPERNOVA RA=22H28M27.2376S, J2000 F814W > 26.19 ABMAG (local pre-SN DEC=+30D17'54.46" 5-sigma limit) Reference Frame: ICRS Comments: NGC 7292, SN II, z=0.003292 ------------------------------------------------------------------------------------------------------------------------------------ 11 SN2017GAX EXT-STAR, SUPERNOVA RA=04H45M49.5000S, J2000 F435W > 27.12 ABMAG (local pre-SN DEC=-59D14'42.50" 5-sigma limit) Reference Frame: ICRS Comments: NGC 1672, SN Ib/c, z=0.004440 18438( 5) - 05-Oct-2026 18:00:16 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 13 SN2024PXL EXT-STAR, SUPERNOVA RA=17H32M27.3499S, J2000 F435W > 27.48 ABMAG (local pre-SN DEC=+07D03'44.68" 5-sigma limit) Reference Frame: ICRS Comments: NGC 6384, SN Iax 02cx-like, z=0.005554 ------------------------------------------------------------------------------------------------------------------------------------ 14 SN2022XLP EXT-STAR, SUPERNOVA RA=11H52M49.5770S, J2000 F555W > 26.75 ABMAG (local pre-SN DEC=+44D06'3.51" 5-sigma limit) Reference Frame: ICRS Comments: NGC 3938, SN Iax 02cx-like, z=0.002695 ------------------------------------------------------------------------------------------------------------------------------------ 15 SN2025AHQR EXT-STAR, SUPERNOVA RA=11H11M25.9979S, J2000 F606W > 25.45 ABMAG (local pre-SN DEC=+55D40'29.94" 5-sigma limit) Reference Frame: ICRS Comments: MESSIER 108, SN Iax 02cx-like, z=0.002322 ------------------------------------------------------------------------------------------------------------------------------------ 16 SN2025AECV EXT-STAR, SUPERNOVA RA=12H27M19.9268S, J2000 F814W > 25.61 ABMAG (local pre-SN DEC=+64D48'12.05" 5-sigma limit) Reference Frame: ICRS Comments: NGC 4441, SN II, z=0.009080 ------------------------------------------------------------------------------------------------------------------------------------ 17 SN2018GWO EXT-STAR, SUPERNOVA RA=12H08M38.8200S, J2000 F555W > 27.19 ABMAG (local pre-SN DEC=+68D46'44.47" 5-sigma limit) Reference Frame: ICRS Comments: NGC 4128, SN Ic calcium-rich, z=0.007442 ------------------------------------------------------------------------------------------------------------------------------------ 18 SN2022PRU EXT-STAR, SUPERNOVA RA=11H59M7.6500S, J2000 F814W > 25.45 ABMAG (local pre-SN DEC=+52D41'58.49" 5-sigma limit) Reference Frame: ICRS Comments: UGC 06983, SN II, z=0.003606 ------------------------------------------------------------------------------------------------------------------------------------ 21 SN2008CN EXT-STAR, SUPERNOVA RA=12H40M55.6600S, J2000 F814W > 26.22 ABMAG (local pre-SN DEC=-40D58'12.10" 5-sigma limit) Reference Frame: ICRS Comments: NGC 4603, SN II, z=0.008647 ------------------------------------------------------------------------------------------------------------------------------------ 22 SN2025AJMZ EXT-STAR, SUPERNOVA RA=11H56M30.1858S, J2000 F555W > 27.59 ABMAG (local pre-SN DEC=+55D06'54.26" 5-sigma limit) Reference Frame: ICRS Comments: NGC 3982, SN IIn, z=0.003741 ------------------------------------------------------------------------------------------------------------------------------------ 23 SN2018GJ EXT-STAR, SUPERNOVA RA=16H32M2.2999S, J2000 F814W > 26.67 ABMAG (local pre-SN DEC=+78D12'40.93" 5-sigma limit) Reference Frame: ICRS Comments: NGC 6217, SN II, z=0.004516 ------------------------------------------------------------------------------------------------------------------------------------ 18438( 5) - 05-Oct-2026 18:00:16 - [ 5] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 24 SN2012EC EXT-STAR, SUPERNOVA RA=02H45M59.8700S, J2000 F814W > 24.07 ABMAG (local pre-SN DEC=-07D34'24.10" 5-sigma limit) Reference Frame: ICRS Comments: NGC 1084, SN IIP, z=0.004707 ------------------------------------------------------------------------------------------------------------------------------------ 25 SN2013EJ EXT-STAR, SUPERNOVA RA=01H36M48.1600S, J2000 F814W > 26.25 ABMAG (local pre-SN DEC=+15D45'31.00" 5-sigma limit) Reference Frame: ICRS Comments: MESSIER 074, SN IIP, z=0.002192 ------------------------------------------------------------------------------------------------------------------------------------ 26 SN2008AX EXT-STAR, SUPERNOVA RA=12H30M40.8000S, J2000 F814W > 24.52 ABMAG (local pre-SN DEC=+41D38'14.50" 5-sigma limit) Reference Frame: ICRS Comments: NGC 4490, SN IIb, z=0.001885 ------------------------------------------------------------------------------------------------------------------------------------ 27 SN2017EAW EXT-STAR, SUPERNOVA RA=20H34M44.2399S, J2000 F814W > 26.26 ABMAG (local pre-SN DEC=+60D11'35.84" 5-sigma limit) Reference Frame: ICRS Comments: NGC 6946, SN II, z=0.000133 ------------------------------------------------------------------------------------------------------------------------------------ 28 SN2016GKG EXT-STAR, SUPERNOVA RA=01H34M14.4401S, J2000 F606W > 26.41 ABMAG (local pre-SN DEC=-29D26'24.22" 5-sigma limit) Reference Frame: ICRS Comments: NGC 613, SN IIb, z=0.004940 ------------------------------------------------------------------------------------------------------------------------------------ 30 SN2023RVE STAR, SUPERNOVA RA=02H46M18.1300S, J2000 F814W > 25.11 ABMAG (pre-SN local 50% DEC=-30D14'22.16" recovery; site source not yet confirmed) Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 31 SN2024ABFO STAR, SUPERNOVA RA=03H57M25.6220S, J2000 F814W = 22.30 ABMAG (published pre-SN DEC=-46D11'7.67" candidate; late flux unknown) Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18438( 5) - 05-Oct-2026 18:00:16 - [ 6] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 32 SN2023BVJ STAR, SUPERNOVA RA=09H50M56.0400S, J2000 F814W > 24.22 ABMAG (pre-SN local 50% DEC=+33D33'10.94" recovery; site source not yet confirmed) Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 34 SN2023ABDG STAR, SUPERNOVA RA=22H56M51.7900S, J2000 F606W > 26.18 ABMAG (pre-SN local 50% DEC=-37D20'20.36" recovery; site source not yet confirmed) Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 35 SN2009MD STAR, SUPERNOVA RA=10H48M26.2800S, J2000 F814W = 24.99 VEGAMAG (2012 ACS DEC=+12D32'2.80" source; current flux unknown) Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 36 AT2016JBU STAR, SUPERNOVA RA=07H36M25.9600S, J2000 F814W = 25.855 VEGAMAG (2021 HST DEC=-69D32'55.25" residual; current flux unknown) Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 37 SN2009KR STAR, SUPERNOVA RA=05H12M3.3000S, J2000 F555W = 23.96 mag, F814W = 23.08 mag DEC=-15D41'52.19" (2012 ACS source; Maund et al. 2015) Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 38 SN2024PXG STAR, SUPERNOVA RA=16H52M46.4200S, J2000 F606W > 25.96 ABMAG (local pre-SN DEC=-59D13'26.94" 5-sigma limit) Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 18438( 5) - 05-Oct-2026 18:00:16 - [ 7] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 0.135 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.145 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 3.034 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 85.29 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 18438( 5) - 05-Oct-2026 18:00:16 - [ 8] Visit: 01 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 SN2023RVE ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2023RVE 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2023RVE 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 9] Visit: 02 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 SN2024ABFO WFC3/UVI ACCUM UVIS2 F814W 1 1240 S PATTERN 2 1 S (2480 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2024ABFO 1 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2024ABFO 1 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 10] Visit: 03 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 SN2022ACKO ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2022ACKO 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2022ACKO 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 11] Visit: 04 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 SN2022ACKO ACS/WFC ACCUM WFC1 F606W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2022ACKO 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 N/A SN2022ACKO 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 12] Visit: 05 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 SN2017GKK WFC3/UVI ACCUM UVIS2 F814W 1 860 S PATTERN 1 1 S (2580 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2017GKK 1 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2017GKK 1 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S SN2017GKK 1 WFC3/UVI ACCUM UVIS2 F814W 3 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 13] Visit: 06 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 SN2017GKK WFC3/UVI ACCUM UVIS2 F606W 1 860 S PATTERN 1 1 S (2580 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2017GKK 1 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 N/A S SN2017GKK 1 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 N/A S SN2017GKK 1 WFC3/UVI ACCUM UVIS2 F606W 3 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 14] Visit: 07 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 SN2022CRV ACS/WFC ACCUM WFC1 F606W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2022CRV 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 N/A SN2022CRV 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 15] Visit: 08 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 SN2022CRV ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2022CRV 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2022CRV 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 16] Visit: 09 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 SN2019YVR ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2019YVR 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2019YVR 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 17] Visit: 10 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 SN2013DF ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2013DF 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2013DF 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 18] Visit: 11 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 SN2013DF ACS/WFC ACCUM WFC1 F555W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2013DF 1 ACS/WFC ACCUM WFC1 F555W 1 none none none 1 N/A SN2013DF 1 ACS/WFC ACCUM WFC1 F555W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 19] Visit: 12 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 SN2016COK ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2016COK 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2016COK 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 20] Visit: 13 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 SN2020JFO ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2020JFO 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2020JFO 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 21] Visit: 14 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 SN2024ABFL WFC3/UVI ACCUM UVIS2 F814W 1 1300 S PATTERN 2 1 S (2600 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2024ABFL 1 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2024ABFL 1 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 22] Visit: 15 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 SN2026FOV WFC3/UVI ACCUM UVIS2 F606W 1 580 S PATTERN 2 1-2 S (1160 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2026FOV WFC3/UVI ACCUM UVIS2 F814W FLASH=10 1 520 S S (1040 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2026FOV 1 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 N/A S SN2026FOV 1 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 N/A S SN2026FOV 2 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2026FOV 2 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 23] Visit: 16 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 SN2017GAX ACS/WFC ACCUM WFC1 F435W 1 1120 S PATTERN 3 1 (2240 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2017GAX 1 ACS/WFC ACCUM WFC1 F435W 1 none none none 1 N/A SN2017GAX 1 ACS/WFC ACCUM WFC1 F435W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 24] Visit: 17 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 SN2024ABFL WFC3/UVI ACCUM UVIS2 F606W 1 1300 S PATTERN 2 1 S (2600 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2024ABFL 1 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 N/A S SN2024ABFL 1 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 25] Visit: 18 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 SN2009MD ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2009MD 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2009MD 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 26] Visit: 19 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 SN2024PXL ACS/WFC ACCUM WFC1 F435W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2024PXL 1 ACS/WFC ACCUM WFC1 F435W 1 none none none 1 N/A SN2024PXL 1 ACS/WFC ACCUM WFC1 F435W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 27] Visit: 20 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 SN2024PXL ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2024PXL 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2024PXL 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 28] Visit: 21 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 SN2022XLP WFC3/UVI ACCUM UVIS2 F555W 1 810 S PATTERN 1 1 S (2430 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2022XLP 1 WFC3/UVI ACCUM UVIS2 F555W 1 none none none 1 N/A S SN2022XLP 1 WFC3/UVI ACCUM UVIS2 F555W 2 none none none 1 N/A S SN2022XLP 1 WFC3/UVI ACCUM UVIS2 F555W 3 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 29] Visit: 22 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 SN2022XLP WFC3/UVI ACCUM UVIS2 F814W 1 810 S PATTERN 1 1 S (2430 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2022XLP 1 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2022XLP 1 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S SN2022XLP 1 WFC3/UVI ACCUM UVIS2 F814W 3 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 30] Visit: 23 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 SN2025AHQR WFC3/UVI ACCUM UVIS2 F606W 1 560 S PATTERN 2 1-2 S (1120 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2025AHQR WFC3/UVI ACCUM UVIS2 F814W FLASH=10 1 560 S S (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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2025AHQR 1 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 N/A S SN2025AHQR 1 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 N/A S SN2025AHQR 2 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2025AHQR 2 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 31] Visit: 24 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 SN2025AECV WFC3/UVI ACCUM UVIS2 F814W 1 620 S PATTERN 2 1-2 S (1240 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2025AECV WFC3/UVI ACCUM UVIS2 F606W 1 530 S S (1060 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2025AECV 1 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2025AECV 1 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S SN2025AECV 2 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 N/A S SN2025AECV 2 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 32] Visit: 25 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 SN2018GWO ACS/WFC ACCUM WFC1 F555W 1 1160 S PATTERN 3 1 (2320 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2018GWO 1 ACS/WFC ACCUM WFC1 F555W 1 none none none 1 N/A SN2018GWO 1 ACS/WFC ACCUM WFC1 F555W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 33] Visit: 26 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 SN2018GWO ACS/WFC ACCUM WFC1 F814W 1 1160 S PATTERN 3 1 (2320 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2018GWO 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2018GWO 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 34] Visit: 27 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 SN2022PRU ACS/WFC ACCUM WFC1 F814W 1 1130 S PATTERN 3 1 (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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2022PRU 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2022PRU 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 35] Visit: 28 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 SN2009KR ACS/WFC ACCUM WFC1 F555W 1 520 S PATTERN 3 1-2 (1040 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2009KR ACS/WFC ACCUM WFC1 F814W 1 420 S (840 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2009KR 1 ACS/WFC ACCUM WFC1 F555W 1 none none none 1 N/A SN2009KR 1 ACS/WFC ACCUM WFC1 F555W 2 none none none 1 N/A SN2009KR 2 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2009KR 2 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 36] Visit: 29 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 SN2024PXG ACS/WFC ACCUM WFC1 F606W 1 1130 S PATTERN 3 1 (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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2024PXG 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 N/A SN2024PXG 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 37] Visit: 30 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 SN2023ABDG ACS/WFC ACCUM WFC1 F606W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2023ABDG 1 ACS/WFC ACCUM WFC1 F606W 1 none none none 1 N/A SN2023ABDG 1 ACS/WFC ACCUM WFC1 F606W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 38] Visit: 31 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 SN2008CN ACS/WFC ACCUM WFC1 F814W 1 1115 S PATTERN 3 1 (2230 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2008CN 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2008CN 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 39] Visit: 32 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 SN2025AJMZ WFC3/UVI ACCUM UVIS2 F555W 1 825 S PATTERN 1 1 S (2475 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2025AJMZ 1 WFC3/UVI ACCUM UVIS2 F555W 1 none none none 1 N/A S SN2025AJMZ 1 WFC3/UVI ACCUM UVIS2 F555W 2 none none none 1 N/A S SN2025AJMZ 1 WFC3/UVI ACCUM UVIS2 F555W 3 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 40] Visit: 33 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 SN2018GJ ACS/WFC ACCUM WFC1 F555W 1 510 S PATTERN 3 1-2 (1020 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2018GJ ACS/WFC ACCUM WFC1 F814W 1 520 S (1040 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2018GJ 1 ACS/WFC ACCUM WFC1 F555W 1 none none none 1 N/A SN2018GJ 1 ACS/WFC ACCUM WFC1 F555W 2 none none none 1 N/A SN2018GJ 2 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2018GJ 2 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 41] Visit: 34 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 SN2012EC ACS/WFC ACCUM WFC1 F814W 1 1105 S PATTERN 3 1 (2210 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2012EC 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2012EC 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 42] Visit: 35 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 SN2013EJ WFC3/UVI ACCUM UVIS2 F555W 1 560 S PATTERN 2 1-2 S (1120 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2013EJ WFC3/UVI ACCUM UVIS2 F814W 1 560 S S (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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2013EJ 1 WFC3/UVI ACCUM UVIS2 F555W 1 none none none 1 N/A S SN2013EJ 1 WFC3/UVI ACCUM UVIS2 F555W 2 none none none 1 N/A S SN2013EJ 2 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2013EJ 2 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 43] Visit: 36 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 SN2008AX WFC3/UVI ACCUM UVIS2 F438W 1 560 S PATTERN 2 1-2 S (1120 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2008AX WFC3/UVI ACCUM UVIS2 F814W 1 560 S S (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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2008AX 1 WFC3/UVI ACCUM UVIS2 F438W 1 none none none 1 N/A S SN2008AX 1 WFC3/UVI ACCUM UVIS2 F438W 2 none none none 1 N/A S SN2008AX 2 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2008AX 2 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 44] Visit: 37 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 SN2017EAW WFC3/UVI ACCUM UVIS2 F814W 1 380 S (760 PATTERN 2 1-2 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2017EAW WFC3/UVI ACCUM UVIS2 F275W FLASH=10 1 760 S S (1520 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2017EAW 1 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S SN2017EAW 1 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S SN2017EAW 2 WFC3/UVI ACCUM UVIS2 F275W 1 none none none 1 N/A S SN2017EAW 2 WFC3/UVI ACCUM UVIS2 F275W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 45] Visit: 38 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 SN2016GKG WFC3/UVI ACCUM UVIS2 F438W FLASH=15 1 550 S PATTERN 2 1-2 S (1100 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2016GKG WFC3/UVI ACCUM UVIS2 F606W 1 550 S S (1100 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2016GKG 1 WFC3/UVI ACCUM UVIS2 F438W 1 none none none 1 N/A S SN2016GKG 1 WFC3/UVI ACCUM UVIS2 F438W 2 none none none 1 N/A S SN2016GKG 2 WFC3/UVI ACCUM UVIS2 F606W 1 none none none 1 N/A S SN2016GKG 2 WFC3/UVI ACCUM UVIS2 F606W 2 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 46] Visit: 39 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 AT2016JBU WFC3/UVI ACCUM UVIS2 F814W 1 800 S PATTERN 1 1 S (2400 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 | ------------------------------------------------------------------------------------------------------------------------------------ AT2016JBU 1 WFC3/UVI ACCUM UVIS2 F814W 1 none none none 1 N/A S AT2016JBU 1 WFC3/UVI ACCUM UVIS2 F814W 2 none none none 1 N/A S AT2016JBU 1 WFC3/UVI ACCUM UVIS2 F814W 3 none none none 1 N/A S 18438( 5) - 05-Oct-2026 18:00:16 - [ 47] Visit: 40 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 SN2023BVJ ACS/WFC ACCUM WFC1 F814W 1 1100 S PATTERN 3 1 (2200 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2023BVJ 1 ACS/WFC ACCUM WFC1 F814W 1 none none none 1 N/A SN2023BVJ 1 ACS/WFC ACCUM WFC1 F814W 2 none none none 1 N/A 18438( 5) - 05-Oct-2026 18:00:16 - [ 48] Summary Form for Proposal 18438 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2, WFC1 ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=10, FLASH=15 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 2 1, PATTERN 2 1-2, PATTERN 3 1, PATTERN 3 1-2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F275W, F435W, F438W, F555W, F606W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names AT2016JBU, SN2008AX, SN2008CN, SN2009KR, SN2009MD, SN2012EC, SN2013DF, SN2013EJ, SN2016COK, SN2016GKG, SN2017EAW, SN2017GAX, SN2017GKK, SN2018GJ, SN2018GWO, SN2019YVR, SN2020JFO, SN2022ACKO, SN2022CRV, SN2022PRU, SN2022XLP, SN2023ABDG, SN2023BVJ, SN2023RVE, SN2024ABFL, SN2024ABFO, SN2024PXG, SN2024PXL, SN2025AECV, SN2025AHQR, SN2025AJMZ, SN2026FOV ------------------------------------------------------------------------------------------------------------------------------------