18080( 3) - 15-Aug-2025 20:05:37 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18080 Version: 3 Check-in Time: 15-Aug-2025 20:05:37 STScI Edit Number: 1 Title The High Redshift Lyman Continuum Survey ------------------------------------------------------------------------------------ Type Cycle GO 33 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Claudia Scarlata University of Minnesota - Twin Cities Y CoI: Prof. Matthew James Hayes Stockholm University N CoI: Dr. Harry Teplitz California Institute of Technology N CoI: Dr. Vihang Mehta California Institute of Technology N CoI: Yu-Heng Lin California Institute of Technology N CoI: Dr. Annalisa Citro University of Minnesota - Twin Cities N CoI: Alexandra Le Reste University of Minnesota - Twin Cities N CoI: Dr. Alberto Saldana-Lopez Stockholm University N CoI: Dr. Alaina L. Henry Space Telescope Science Institute N CoI: Dr. Alexander Beckett Space Telescope Science Institute N CoI: Dr. Anahita Alavi California Institute of Technology N CoI: Prof. Stephan Robert McCandliss The Johns Hopkins University N CoI: Dr. Keunho J. Kim California Institute of Technology N CoI: Prof. Daniel Schaerer University of Geneva, Department of N Astronomy CoI: Dr. Marc Rafelski Space Telescope Science Institute N CoI: Dr. Ricardo Amorin Universidad de La Serena N CoI: Sara Mascia Institute of Science and Technology N Austria CoI: Mr. Mason Huberty University of Minnesota - Twin Cities N CoI: Dr. Laura Pentericci INAF - Osservatorio Astronomico di Roma N CoI: Prof. Anne Jaskot Williams College N ------------------------------------------------------------------------------------ Abstract The epoch of reionization (EoR) is a crucial event in the cosmic history. While the James Webb Space Telescope (JWST) is advancing our knowledge of reionization sources, a key factor in modeling reionization is the escape fraction of hydrogen-ionizing Lyman continuum (LyC) radiation (fesc). f_esc cannot be measured for galaxies at redshifts z>4. HST observations have provided insights into fesc and its calibrators in local galaxies, but the evolution of galaxy properties over time raises uncertainty about the application of these calibrations to EoR systems. We propose the High redshift LyC survey (HzLCS), a program designed to measure fesc and its indirect estimators at z=3.1-3.5. With 53 orbits of HST WFC3/UVIS and 24hours of JWST NIRISS(F200W) Wide Field Slitless Spectroscopy and imaging we will measure fesc for ~140 galaxies at these redshifts. The survey will target 20 well-separated fields, providing HST deep F336W images covering LyC wavelengths, as well as two HST optical bands, and JWST spectroscopy for redshift and galaxies' physical property measurements. By minimizing systematic uncertainties, our strategy cuts the uncertainty in fesc to 15%, matching local-universe precision and unlocking evolutionary studies just 1 Gyr after reionization ended. 18080( 3) - 15-Aug-2025 20:05:37 - [ 2] We make our data public immediately. ------------------------------------------------------------------------------------ Observations Description ------------------------ This program images 7 fields with existing deep NIRISS spectroscopy with the WFC3/UVIS F336W filter to obtain rest-frame UV imaging data. Full orbit integrations are obtained in order to minimize post-flash and read-noise and maximize the total depth. Therefore 3 orbit vists are required to enable fully cleaning the cosmic rays. Exposures are post-flashed by 9e- to help mitigate the CTE, and reach 20e- backgrounds per pixel. We utilize a combination of a 4 point box and 3 point line, which is similar to the 7 point pattern in ISR WFC3-2020-7. However, since the two visits may not be executed at the same position angle, we avoid trying to obtain the improved sub-pixel phasing from the 7 point pattern from that supplemental ISR as a slight change in orientation removes the benefits. We still will well sampled sub-pixel dithers in each visit which will combine sufficiently well together. The dither pattern per visit is set 19 and 15 times larger than the default to help minimize the blotchy pattern observed in F336W imaging (i.e., similar to that seen in Rafelski et al. 2015, AJ, 150 31, Figure 15) and to dither over the chip gap with maximal number of exposures covering the chip gap while minimizing reduced FOV from lack of overlap at the edges. In our phase I we requested an orient relative to the original NIRISS fields, but relax them (remove) here for easier scheduling as the larger WFC3 FOV over the NIRISS FOV still assures high overlap. However, we still require that the second visit for each field is wtihin +-10 degrees of the first visit, as non-overlap regions will not have sufficient exposures to fully clean the cosmic rays from orbit long exposures. If the second visit of any field is executed at a different orient, then the dither pattern would need to be revisited. Our program is not significantly affected by the possibility of one gyro mode. If we were to go into one gyro mode, it may affect the schedulability of the second orientation. We could accept the same orient or 180 degree rotation instead of the 90 degree rotation we are currently using. Note: if we did switch orients, we would need to add an offset for the second visit to maximize the dither pattern usefullness. ------------------------------------------------------------------------------------ 18080( 3) - 15-Aug-2025 20:05:37 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 PAR617 GALAXY, EMISSION LINE RA=14H20M28.2017S, J2000 V = 25 NEBULA DEC=+52D45'8.37" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 PAR28 GALAXY, EMISSION LINE RA=10H00M20.9777S, J2000 V = 25 NEBULA DEC=+02D25'6.71" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 PAR050 GALAXY, EMISSION LINE RA=12H36M43.2058S, J2000 V = 25 NEBULA DEC=+62D03'55.50" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 4 PAR052 GALAXY, EMISSION LINE RA=10H00M37.2530S, J2000 V = 25 NEBULA DEC=+02D02'30.62" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 5 PAR058 GALAXY, EMISSION LINE RA=11H50M1.0186S, J2000 V = 25 NEBULA DEC=+22D41'0.37" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 6 PAR054 GALAXY, EMISSION LINE RA=14H18M18.2234S, J2000 V = 25 NEBULA DEC=+52D16'46.86" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 7 PAR034 GALAXY, EMISSION LINE RA=12H41M36.7447S, J2000 V = 25 NEBULA DEC=+22D29'58.34" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 18080( 3) - 15-Aug-2025 20:05:37 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 3.287 Line_Spacing 2.128 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE-3PT Pattern_Purpose DITHER Number_Of_Points 3 Point_Spacing 2.025 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 18080( 3) - 15-Aug-2025 20:05:37 - [ 5] Visit: 01 (PAR617 4 orbit box) 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 PAR617 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 1 1 S ER see below (10482 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR617 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2638.0 S S TER PAR617 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2614.0 S S TER PAR617 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2616.0 S S TER PAR617 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 4 2614.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 6] Visit: 02 (PAR617 3 orbit line) Visit Requirements: ORIENT -10D TO 10D FROM 01 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 PAR617 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 2 1 S ER see below (7870 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR617 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2638.0 S S TER PAR617 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2616.0 S S TER PAR617 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2616.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 7] Visit: 03 (PAR28 4 orbit box) 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 PAR28 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 1 1 S ER see below (10294 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR28 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2591.0 S S TER PAR28 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2567.0 S S TER PAR28 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2569.0 S S TER PAR28 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 4 2567.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 8] Visit: 04 (PAR28 3 orbit line) Visit Requirements: ORIENT -10D TO 10D FROM 03 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 PAR28 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 2 1 S ER see below (7727 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR28 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2589.0 S S TER PAR28 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2569.0 S S TER PAR28 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2569.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 9] Visit: 05 (PAR50 4 orbit box) 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 PAR050 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 1 1 S ER see below (10634 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR050 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2676.0 S S TER PAR050 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2652.0 S S TER PAR050 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2654.0 S S TER PAR050 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 4 2652.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 10] Visit: 06 (PAR50 3 orbit line) Visit Requirements: ORIENT -10D TO 10D FROM 05 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 PAR050 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 2 1 S ER see below (7984 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR050 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2676.0 S S TER PAR050 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2654.0 S S TER PAR050 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2654.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 11] Visit: 07 (PAR52 3 orbit line) Visit Requirements: ORIENT -10D TO 10D FROM 08 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 PAR052 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 2 1 S ER see below (7727 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR052 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2590.0 S S TER PAR052 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2568.0 S S TER PAR052 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2569.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 12] Visit: 08 (PAR52 4 orbit box) 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 PAR052 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 1 1 S ER see below (10292 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR052 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2589.0 S S TER PAR052 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2567.0 S S TER PAR052 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2569.0 S S TER PAR052 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 4 2567.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 13] Visit: 09 (PAR58 4 orbit box) 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 PAR058 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 1 1 S ER see below (10293 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR058 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2590.0 S S TER PAR058 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2567.0 S S TER PAR058 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2569.0 S S TER PAR058 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 4 2567.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 14] Visit: 10 (PAR58 3 orbit line) Visit Requirements: ORIENT -10D TO 10D FROM 09 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 PAR058 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 2 1 S ER see below (7729 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR058 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2591.0 S S TER PAR058 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2569.0 S S TER PAR058 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2569.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 15] Visit: 11 (PAR54 4 orbit box) 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 PAR054 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 1 1 S ER see below (10482 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR054 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2638.0 S S TER PAR054 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2614.0 S S TER PAR054 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2616.0 S S TER PAR054 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 4 2614.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 16] Visit: 12 (PAR54 3 orbit line) Visit Requirements: ORIENT -10D TO 10D FROM 11 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 PAR054 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 2 1 S ER see below (7870 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR054 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2638.0 S S TER PAR054 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2616.0 S S TER PAR054 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2616.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 17] Visit: 13 (PAR34 4 orbit box) 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 PAR034 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 1 1 S ER see below (10291 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR034 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2591.0 S S TER PAR034 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2567.0 S S TER PAR034 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2567.0 S S TER PAR034 1 WFC3/UVI ACCUM UVIS-CEN F336W 4 none none none 4 2566.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 18] Visit: 14 (PAR34 3 orbit line) Visit Requirements: ORIENT -10D TO 10D FROM 13 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 PAR034 WFC3/UVI ACCUM UVIS-CENT F336W FLASH=9 1 2500 S PATTERN 2 1 S ER see below (7729 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR034 1 WFC3/UVI ACCUM UVIS-CEN F336W 1 none none none 1 2591.0 S S TER PAR034 1 WFC3/UVI ACCUM UVIS-CEN F336W 2 none none none 2 2569.0 S S TER PAR034 1 WFC3/UVI ACCUM UVIS-CEN F336W 3 none none none 3 2569.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 19] Visit: 16 (PAR54 optical) Visit Requirements: ORIENT -10D TO 10D FROM 11 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 PAR054 WFC3/UVI ACCUM UVIS-CENT F625W 1 720 S PATTERN 2 1 S ER see below (2370 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 PAR054 WFC3/UVI ACCUM UVIS-CENT F814W 1 782 S PATTERN 2 2 S ER (2346 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR054 1 WFC3/UVI ACCUM UVIS-CEN F625W 1 none none none 1 930.0 S S TER PAR054 1 WFC3/UVI ACCUM UVIS-CEN F625W 2 none none none 1 N/A S TER PAR054 1 WFC3/UVI ACCUM UVIS-CEN F625W 3 none none none 1 N/A S TER PAR054 2 WFC3/UVI ACCUM UVIS-CEN F814W 1 none none none 2 N/A S TER PAR054 2 WFC3/UVI ACCUM UVIS-CEN F814W 2 none none none 2 N/A S TER PAR054 2 WFC3/UVI ACCUM UVIS-CEN F814W 3 none none none 2 N/A S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 20] Visit: 17 (PAR58 optical) Visit Requirements: ORIENT -10D TO 10D FROM 09 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 PAR058 WFC3/UVI ACCUM UVIS-CENT F625W 1 720 S PATTERN 2 1 S ER see below (2334 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 PAR058 WFC3/UVI ACCUM UVIS-CENT F814W 1 782 S PATTERN 2 2 S ER see below (2310 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 | ------------------------------------------------------------------------------------------------------------------------------------ PAR058 1 WFC3/UVI ACCUM UVIS-CEN F625W 1 none none none 1 918.0 S S TER PAR058 1 WFC3/UVI ACCUM UVIS-CEN F625W 2 none none none 1 708.0 S S TER PAR058 1 WFC3/UVI ACCUM UVIS-CEN F625W 3 none none none 1 708.0 S S TER PAR058 2 WFC3/UVI ACCUM UVIS-CEN F814W 1 none none none 2 770.0 S S TER PAR058 2 WFC3/UVI ACCUM UVIS-CEN F814W 2 none none none 2 770.0 S S TER PAR058 2 WFC3/UVI ACCUM UVIS-CEN F814W 3 none none none 2 770.0 S S TER 18080( 3) - 15-Aug-2025 20:05:37 - [ 21] Summary Form for Proposal 18080 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS-CENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=9 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT -10D TO 10D FROM 01, ORIENT -10D TO 10D FROM 03, ORIENT -10D TO 10D FROM 05, ORIENT -10D TO 10D FROM 08, ORIENT -10D TO 10D FROM 09, ORIENT -10D TO 10D FROM 11, ORIENT -10D TO 10D FROM 13, PATTERN 1 1, PATTERN 2 1, PATTERN 2 2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F336W, F625W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names PAR034, PAR050, PAR052, PAR054, PAR058, PAR28, PAR617 ------------------------------------------------------------------------------------------------------------------------------------