17957( 4) - 25-Nov-2025 19:22:24 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17957 Version: 4 Check-in Time: 25-Nov-2025 19:22:24 STScI Edit Number: 2 Title WFC3 IR Linearity Monitor ------------------------------------------------------------------------------------ Type Cycle CAL/WFC3 33 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Joel David Green Space Telescope Science Institute Y CoI: Varun Bajaj Space Telescope Science Institute Y CoI: Ms. Jennifer Mack Space Telescope Science Institute Y CoI: Ky Huynh Space Telescope Science Institute Y ------------------------------------------------------------------------------------ Abstract The WFC3/IR detector exhibits a non-linear response to incident flux. The data reduction pipeline provides a correction for the non-linearity, which depends on accurate characterization of the response of the detector. To monitor the non-linearity of the WFC3/IR detector, we use a dark observation followed by two internal flats using the Tungsten lamp at different sampling rates, and a trailing dark. Any changes measured in the non-linearity will be updated in the calibration reference file, crucial to providing a correction for accurate photometry. This program is a continuation of the cycle 32 (program 17678) linearity calibration program, but has signficant changes in Cycle 33 (see proposal description). ------------------------------------------------------------------------------------ Observations Description ------------------------ Prior monitoring visits consisted of a dark observation followed by two internal flats using the Tungsten lamp through F126N (half SPARS10, half SPARS50) and F127M (half SPARS25, half SPARS10) for a total of 10 orbits. The narrow band flat is used to ensure that the lamp is warm and stable in preparation for the F127M exposure, but not so bright to cause persistence. A trailing dark is obtained to measure the persistence decay rate. This cycle (33), F127M flats will be taken in with SPARS5 and STEP25 to better sample the low fluence end of the linearity curve. Ten orbits in each SAMP-SEQ are needed to reduce systematic uncertainties. ------------------------------------------------------------------------------------ 17957( 4) - 25-Nov-2025 19:22:24 - [ 2] Visit: 01 (SPARS5a) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 3] Visit: 02 (SPARS5b) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 4] Visit: 03 (SPARS5c) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 5] Visit: 04 (SPARS5d) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 6] Visit: 05 (SPARS5e) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 7] Visit: 06 (SPARS5f) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 8] Visit: 07 (SPARS5g) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 9] Visit: 08 (SPARS5h) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 10] Visit: 09 (SPARS5i) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 11] Visit: 10 (SPARS5j) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=SPARS5, NSAMP=15 1 DEF CUM (72.943 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=14 1 DEF CUM (327.939 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 12] Visit: 11 (STEP25a) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 13] Visit: 12 (STEP25b) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 14] Visit: 13 (STEP25c) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 15] Visit: 14 (STEP25d) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 16] Visit: 15 (STEP25e) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 17] Visit: 16 (STEP25f) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 18] Visit: 17 (STEP25g) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 19] Visit: 18 (STEP25h) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 20] Visit: 19 (STEP25i) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 21] Visit: 20 (STEP25j) Visit Requirements: BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00 On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS100, NSAMP=3 1 DEF CUM (202.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TUNGSTEN WFC3/IR MULTIAC IR F126N SAMP-SEQ=SPARS50, NSAMP=2 1 DEF CUM (52.933 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TUNGSTEN WFC3/IR MULTIAC IR F127M SAMP-SEQ=STEP25, NSAMP=15 1 DEF CUM (274.235 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK WFC3/IR MULTIAC IR BLANK SAMP-SEQ=SPARS25, NSAMP=15 1 DEF CUM (352.94 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 | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM TUNGSTEN 2 WFC3/IR MULTIAC IR F126N none none none none 1 N/A CUM TUNGSTEN 3 WFC3/IR MULTIAC IR F127M none none none none 1 N/A CUM DARK 4 WFC3/IR MULTIAC IR BLANK none none none none 1 N/A CUM 17957( 4) - 25-Nov-2025 19:22:24 - [ 22] Summary Form for Proposal 17957 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=14, NSAMP=15, NSAMP=2, NSAMP=3, SAMP-SEQ=SPARS100, SAMP-SEQ=SPARS25, SAMP-SEQ=SPARS5, SAMP-SEQ=SPARS50, SAMP-SEQ=STEP25 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 01-NOV-2025:00:00:00 AND 01-DEC-2025:00:00:00, BETWEEN 01-NOV-2025:00:00:00 AND 01-JAN-2026:00:00:00 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements BLANK, F126N, F127M ------------------------------------------------------------------------------------------------------------------------------------ Target Names DARK, TUNGSTEN ------------------------------------------------------------------------------------------------------------------------------------