17529( 6) - 03-Sep-2025 15:37:27 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17529 Version: 6 Check-in Time: 03-Sep-2025 15:37:27 STScI Edit Number: 1 Title Adding the Stripped-Envelope Supernova iPTF 13bvn to the Ongoing Search for Surviving Companion Stars ------------------------------------------------------------------------------------ Type Cycle GO 31 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Ori Dosovitz Fox Space Telescope Science Institute Y CoI: Dr. Jennifer Andrews NOIRLab - Gemini North (HI) N CoI: Dr. Kyra Azalee Bostroem University of Arizona N CoI: Maria Drout University of Toronto N CoI: Prof. Alex V. Filippenko University of California - Berkeley N CoI: Dr. Patrick Kelly University of Minnesota - Twin Cities N CoI: Dr. Dan Milisavljevic Purdue University N CoI: Prof. Selma E. de Mink Max Planck Institute for Astrophysics N CoI: Dr. Stuart Ryder Macquarie University N CoI: Dr. Nathan Smith University of Arizona N CoI: Dr. Niharika Sravan Drexel University N CoI: Dr. Schuyler D. Van Dyk California Institute of Technology N CoI: Dr. Benjamin F. Williams University of Washington N CoI: Dr. Emmanouil Zapartas FORTH - Institute of Astrophysics N CoI: Dr. WeiKang Zheng University of California - Berkeley N CoI: Dr. Sebastian Gomez University of Texas at Austin N CoI: Dr. Justin Pierel Space Telescope Science Institute N CoI: Dr. Melissa Shahbandeh Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract The mass-loss mechanism for stripped-envelope supernovae (SESNe) remains debated, but evidence is starting to mount in support of binary star mass-transfer. There are now five direct post-explosion detections of surviving companions. A statistically complete sample of companion-masses can provide important constraints on the underlying physics used in binary evolution models, which have implications on many stellar systems, including merger sources for gravitational waves. The sample is still too small. Every additional data point is impactful. But building the proper dataset is a tedious and painstaking process given the small number of reasonable candidates each year. We confirm that all other viable nearby SESNe at <20 Mpc have already been targeted. Here we propose optical+UV observations of the next most feasible and interesting target, iPTF 13bvn at 22 Mpc, to detect (or place meaningful limits on) any surviving companion. iPTF 13bvn was the very first SN Ib to have a progenitor identification, but the details have remained shrouded in ambiguity. A follow-up search for a surviving companion was never fully explored because the distance initially seemed prohibitive. We show that despite these limitations, deep UV/F336W imaging can now offer an optimum detection strategy for the expected hot, blue stellar companion, while optical imaging can constrain the companion star model, rule out shock interaction contributions, and probe less likely, but possible, cooler star companions. Given HST's time horizon and the requisite waiting period to allow new SNe to fade before conducting a companion search, now is the time to take full advantage of HST's unique UV capabilities. ------------------------------------------------------------------------------------ 17529( 6) - 03-Sep-2025 15:37:27 - [ 2] Observations Description ------------------------ WFC3: - Use entire array to aquire fiducial stars for alignment purposes - Use 512_UVIS2_CTE aperture to minimize photon transfer losses - When scheduled, please have CS contact PI to finalize pos_tag based on final orientation - EXPTIME (actual): -SN iPTF13bvn (12 orbits) -F336W (17500 s) -F555W (13500 s) - FLASH = varies with aim of minimizing photon transfer losses and read noise - Here is the situation: *We are trying to detect a single, very faint source (surviving star from a supernova). We only care about one position, not the entire field. *We have placed the pointing in the center of the UVIS2-512C-CTE aperture, so that will help with the CTE. *We are not sure what the background from the galaxy looks like, but it may contribute to the flux slightly (or not at all). *It is easy to adjust the Flash value in APT to turn the warning off, but we are hoping we aren't adding too much noise unnecessarily, as this source is faint. -For dithering, we use 5 different POS TARGS instead *Impact of Gyros* We have considered the impact of reduced gyro operations on our program, which has 12 orbits requested. We were able to successfully reduce this target to 4 visits, each with 3 orits per visit. The only condition is that all filters must be obtained in the same orientation for several reasons, including time variablility and optimized sampling and reductions. Therefore, we have added the constraint that all be scheduled within 1 day of each other. ------------------------------------------------------------------------------------ 17529( 6) - 03-Sep-2025 15:37:27 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 IPTF-13BVN EXT-STAR, SUPERNOVA RA=15H00M0.1520S, J2000 V = 25 TYPE IB DEC=+01D52'53.17" Reference Frame: Other: SIMBAD 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) 2015.5 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 17529( 6) - 03-Sep-2025 15:37:27 - [ 4] 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 ------------------------------------------------------------------------------------------------------------------------------------ 17529( 6) - 03-Sep-2025 15:37:27 - [ 5] Visit: 01 (iPTF13bvn_1) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 0, 0 S 2C-CTE see below (1383 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 0, 0 S 2C-CTE see below (1050 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1383.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1050.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 6] Visit: 02 (iPTF13bvn_1) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 0.1719, 0.1970 S 2C-CTE see below (1381 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 0.1719, 0.1970 S 2C-CTE see below (1051 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1381.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1051.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 7] Visit: 03 (iPTF13bvn_1) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 0.3437, 0.3542 S 2C-CTE see below (1381 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 0.3437, 0.3542 S 2C-CTE see below (1051 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1381.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1051.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 8] Visit: 04 (iPTF13bvn_2) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 1, 0 S 2C-CTE see below (1383 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 1, 0 S 2C-CTE see below (1050 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1383.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1050.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 9] Visit: 05 (iPTF13bvn_2) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 1.1719, 0.1970 S 2C-CTE see below (1381 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 1.1719, 0.1970 S 2C-CTE see below (1051 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1381.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1051.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 10] Visit: 06 (iPTF13bvn_2) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 1.3437, 0.3542 S 2C-CTE see below (1381 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 1.3437, 0.3542 S 2C-CTE see below (1051 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1381.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1051.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 11] Visit: 07 (iPTF13bvn_3) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 0, 1 S 2C-CTE see below (1383 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 0, 1 S 2C-CTE see below (1050 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1383.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1050.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 12] Visit: 08 (iPTF13bvn_3) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 0.1719, 1.1970 S 2C-CTE see below (1381 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 0.1719, 1.1970 S 2C-CTE see below (1051 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1381.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1051.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 13] Visit: 09 (iPTF13bvn_3) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 0.3437, 1.3542 S 2C-CTE see below (1381 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 0.3437, 1.3542 S 2C-CTE see below (1051 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1381.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1051.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 14] Visit: 10 (iPTF13bvn_4) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 1, 1 S 2C-CTE see below (1383 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 1, 1 S 2C-CTE see below (1050 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1383.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1050.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 15] Visit: 11 (iPTF13bvn_4) 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 1.1719, 1.1970 S 2C-CTE see below (1381 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 1.1719, 1.1970 S 2C-CTE see below (1051 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1381.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1051.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 16] Visit: 12 (iPTF13bvn_4) Visit Requirements: GROUP 12, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11 WITHIN 7D 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 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F336W FLASH=12 1 2500 S POS TARG 1.3437, 1.3542 S 2C-CTE see below (1381 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 IPTF-13BVN WFC3/UVI ACCUM UVIS2-C51 F555W 1 2500 S POS TARG 1.3437, 1.3542 S 2C-CTE see below (1051 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 | ------------------------------------------------------------------------------------------------------------------------------------ IPTF-13BVN 1 WFC3/UVI ACCUM UVIS2-C5 F336W none none none none 1 1381.0 S S 12C-CTE IPTF-13BVN 2 WFC3/UVI ACCUM UVIS2-C5 F555W none none none none 1 1051.0 S S 12C-CTE 17529( 6) - 03-Sep-2025 15:37:27 - [ 17] Summary Form for Proposal 17529 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2-C512C-CTE ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=12 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GROUP 12, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11 WITHIN 7D, POS TARG 0, 0, POS TARG 0, 1, POS TARG 0.1719, 0.1970, POS TARG 0.1719, 1.1970, POS TARG 0.3437, 0.3542, POS TARG 0.3437, 1.3542, POS TARG 1, 0, POS TARG 1, 1, POS TARG 1.1719, 0.1970, POS TARG 1.1719, 1.1970, POS TARG 1.3437, 0.3542, POS TARG 1.3437, 1.3542 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F336W, F555W ------------------------------------------------------------------------------------------------------------------------------------ Target Names IPTF-13BVN ------------------------------------------------------------------------------------------------------------------------------------