17920( 6) - 06-Mar-2025 21:46:21 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17920 Version: 6 Check-in Time: 06-Mar-2025 21:46:21 STScI Edit Number: 3 Title Constraining Composition, Clouds, and Hazes in a Long-Period Giant Planet ------------------------------------------------------------------------------------ Type Cycle GO 32 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Shreyas Vissapragada Carnegie Institution of Washington Y CoI: Dr. Nicole L. Wallack Carnegie Institution of Washington N CoI: Mr. Michael Greklek-McKeon California Institute of Technology N CoI: Dr. Jessica Spake Carnegie Institution of Washington N CoI: Julie Inglis California Institute of Technology N CoI: Dr. Renyu Hu Jet Propulsion Laboratory N CoI: Dr. Armen Tokadjian Jet Propulsion Laboratory N ------------------------------------------------------------------------------------ Abstract With TSM = 243, TOI-2134 c is by far the best known temperate (Teq < 400 K) planet for transmission spectroscopy with a precise mass constraint, largely because the host star is exceptionally bright (Ks = 6.1). We propose to measure the transmission spectrum of this uniquely important planet between 1.1-1.7 micron with WFC3/G141, where all available JWST observation modes would otherwise saturate. We expect that a WFC3/G141 spectrum of this planet will constrain the planet's NH3 abundance to a precision of 0.6 dex, providing unprecedented constraints on planet formation and evolution models. If the atmosphere of this temperate planet is cloudy, our data would instead provide the first constraints on water clouds in a planet or brown dwarf outside the Solar System. Finally, if the planetary atmosphere is hazy, this would be the coldest exoplanet for which hazes have been detected, allowing us an opportunity to bridge Solar System haze studies (e.g. in Titan) with the hazes detected in warmer exoplanets. Only WFC3/G141 can enable these exciting advances in exoplanet atmosphere studies, and it can do so in only 8 orbits. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will observe the transit of TOI-2134c, which lasts roughly 3.5 orbits. We require a full transit duration's worth of baseline, plus an extra orbit at the start of the visit to cover ramp effects, totaling 8 consecutive HST orbits to enable transmission spectroscopy of the target. We will use WFC3/G141 with a similar setup to dozens of exoplanet transit observations in the infrared with HST. We use the spatial scanning mode to extend exposure times, opting for the 512 subarray for improved observational efficiency on this bright source. Using PandExo, we identified the optimal sampling sequence and scan rate, choosing round-trip scans to improve efficiency. The resultant observtions are expected to hit the ~35 ppm noise floor (determined by Stevenson & Fowler) for WFC3/IR spectroscopic observations given the brightness of the host. We start each orbit sequence with a direct image for wavecal as is standard for WFC3/IR scan spectroscopy, and buffer with additional wavecal reads to ensure that there is a buffer dump exactly at the end of each orbit, maximizing 17920( 6) - 06-Mar-2025 21:46:21 - [ 2] observing efficiency. The remainder of the exposures in the orbit are science exposures. This strategy was adopted previously in GO 13501, which was a WFC3 spatial scan observation of another very bright source HD 97658. We adopt POS TARG X of -16.5 to roughly center the spectral trace on the detector (same setup as GO 15333 and GO 15255, both of which spatially scan for GRISM512 on similarly (very) bright sources), and POS TARG Y of -24 to capture the full spatially scanned trace on the detector in every image. ------------------------------------------------------------------------------------ 17920( 6) - 06-Mar-2025 21:46:21 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 BD+39-3325 STAR, EXTRA-SOLAR RA=18H07M44.4478S, J2000 V = 8.93 PLANET, EXTRA-SOLAR DEC=+39D04'26.92" PLANETARY SYSTEM, K III-I, K V-IV Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.004683226178797543 -0.283050999905754 0.0441087 ------------------------------------------------------------------------------------------------------------------------------------ 17920( 6) - 06-Mar-2025 21:46:21 - [ 4] Visit: 01 (TOI-2134c WFC3) Visit Requirements: SCHED 100%; Period 95.8528722 D AND ZERO-PHASE HJD2459718.969335 On Hold Comments: Additional Comments: WFC3 IR transit of TOI-2134c. We would like the transit to be scheduled with 8 continuous orbits, which is longer than the typical WFC3 IR spatial scan transit observation because of the unique nature of the target (an exceptionally long-period gas giant with a correspondingly long transit duration). 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 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=15 1 DEF PHASE 0.9967180604387424 CUM (12.795 S) TO 0.9973701014111778; SEQ 1-3 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=6 1 DEF (5.118 CUM S) ------------------------------------------------------------------------------------------------------------------------------------ 3 BD+39-3325 WFC3/IR MULTIAC GRISM512 G141 SAMP-SEQ=SPARS25, NSAMP=3 12 DEF POS TARG -16.5, -24; CUM (1120.693 SPATIAL SCAN 0.854369, S) 90.0 Degrees, Round trip ------------------------------------------------------------------------------------------------------------------------------------ 4 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=15 1 DEF SEQ 4-6 NON-INT CUM (12.795 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=6 1 DEF (5.118 CUM S) ------------------------------------------------------------------------------------------------------------------------------------ 6 BD+39-3325 WFC3/IR MULTIAC GRISM512 G141 SAMP-SEQ=SPARS25, NSAMP=3 12 DEF POS TARG -16.5, -24; CUM (1120.693 SPATIAL SCAN 0.854369, S) 90.0 Degrees, Round trip ------------------------------------------------------------------------------------------------------------------------------------ 7 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=15 1 DEF SEQ 7-9 NON-INT CUM (12.795 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=6 1 DEF (5.118 CUM S) ------------------------------------------------------------------------------------------------------------------------------------ 9 BD+39-3325 WFC3/IR MULTIAC GRISM512 G141 SAMP-SEQ=SPARS25, NSAMP=3 13 DEF POS TARG -16.5, -24; CUM (1214.084 SPATIAL SCAN 0.854369, S) 90.0 Degrees, Round trip ------------------------------------------------------------------------------------------------------------------------------------ 10 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=15 1 DEF SEQ 10-12 NON-INT CUM (12.795 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=6 1 DEF (5.118 CUM S) ------------------------------------------------------------------------------------------------------------------------------------ 17920( 6) - 06-Mar-2025 21:46:21 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 12 BD+39-3325 WFC3/IR MULTIAC GRISM512 G141 SAMP-SEQ=SPARS25, NSAMP=3 13 DEF POS TARG -16.5, -24; CUM (1214.084 SPATIAL SCAN 0.854369, S) 90.0 Degrees, Round trip ------------------------------------------------------------------------------------------------------------------------------------ 13 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=15 1 DEF NEW OBSET; SEQ 13-15 CUM (12.795 S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 14 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=6 1 DEF (5.118 CUM S) ------------------------------------------------------------------------------------------------------------------------------------ 15 BD+39-3325 WFC3/IR MULTIAC GRISM512 G141 SAMP-SEQ=SPARS25, NSAMP=3 13 DEF POS TARG -16.5, -24; CUM (1214.084 SPATIAL SCAN 0.854369, S) 90.0 Degrees, Round trip ------------------------------------------------------------------------------------------------------------------------------------ 16 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=15 1 DEF SEQ 16-18 NON-INT CUM (12.795 S) ------------------------------------------------------------------------------------------------------------------------------------ 17 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=6 1 DEF (5.118 CUM S) ------------------------------------------------------------------------------------------------------------------------------------ 18 BD+39-3325 WFC3/IR MULTIAC GRISM512 G141 SAMP-SEQ=SPARS25, NSAMP=3 13 DEF POS TARG -16.5, -24; CUM (1214.084 SPATIAL SCAN 0.854369, S) 90.0 Degrees, Round trip ------------------------------------------------------------------------------------------------------------------------------------ 19 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=15 1 DEF SEQ 19-21 NON-INT CUM (12.795 S) ------------------------------------------------------------------------------------------------------------------------------------ 20 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=6 1 DEF (5.118 CUM S) ------------------------------------------------------------------------------------------------------------------------------------ 21 BD+39-3325 WFC3/IR MULTIAC GRISM512 G141 SAMP-SEQ=SPARS25, NSAMP=3 12 DEF POS TARG -16.5, -24; CUM (1120.693 SPATIAL SCAN 0.854369, S) 90.0 Degrees, Round trip ------------------------------------------------------------------------------------------------------------------------------------ 22 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=15 1 DEF SEQ 22-24 NON-INT CUM (12.795 S) ------------------------------------------------------------------------------------------------------------------------------------ 23 BD+39-3325 WFC3/IR MULTIAC GRISM512 F130N SAMP-SEQ=RAPID, NSAMP=6 1 DEF (5.118 CUM S) ------------------------------------------------------------------------------------------------------------------------------------ 24 BD+39-3325 WFC3/IR MULTIAC GRISM512 G141 SAMP-SEQ=SPARS25, NSAMP=3 12 DEF POS TARG -16.5, -24; CUM (1120.693 SPATIAL SCAN 0.854369, S) 90.0 Degrees, Round trip ------------------------------------------------------------------------------------------------------------------------------------ 17920( 6) - 06-Mar-2025 21:46:21 - [ 6] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 1 WFC3/IR MULTIAC GRISM512 F130N none none none none 1 N/A CUM BD+39-3325 2 WFC3/IR MULTIAC GRISM512 F130N none none none none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 1 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 1 N/A CUM BD+39-3325 3 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 1 N/A CUM BD+39-3325 4 WFC3/IR MULTIAC GRISM512 F130N none none none none 2 N/A CUM BD+39-3325 5 WFC3/IR MULTIAC GRISM512 F130N none none none none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 2 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 8] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 2 N/A CUM BD+39-3325 6 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 2 N/A CUM BD+39-3325 7 WFC3/IR MULTIAC GRISM512 F130N none none none none 3 N/A CUM BD+39-3325 8 WFC3/IR MULTIAC GRISM512 F130N none none none none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 3 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 13 none 3 N/A CUM BD+39-3325 9 WFC3/IR MULTIAC GRISM512 G141 none none 13 none 3 N/A CUM BD+39-3325 10 WFC3/IR MULTIAC GRISM512 F130N none none none none 4 N/A CUM BD+39-3325 11 WFC3/IR MULTIAC GRISM512 F130N none none none none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 4 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 10] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 13 none 4 N/A CUM BD+39-3325 12 WFC3/IR MULTIAC GRISM512 G141 none none 13 none 4 N/A CUM BD+39-3325 13 WFC3/IR MULTIAC GRISM512 F130N none none none none 5 N/A CUM BD+39-3325 14 WFC3/IR MULTIAC GRISM512 F130N none none none none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 5 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 11] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 13 none 5 N/A CUM BD+39-3325 15 WFC3/IR MULTIAC GRISM512 G141 none none 13 none 5 N/A CUM BD+39-3325 16 WFC3/IR MULTIAC GRISM512 F130N none none none none 6 N/A CUM BD+39-3325 17 WFC3/IR MULTIAC GRISM512 F130N none none none none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 6 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 12] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 13 none 6 N/A CUM BD+39-3325 18 WFC3/IR MULTIAC GRISM512 G141 none none 13 none 6 N/A CUM BD+39-3325 19 WFC3/IR MULTIAC GRISM512 F130N none none none none 7 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 13] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 20 WFC3/IR MULTIAC GRISM512 F130N none none none none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 7 N/A CUM BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 7 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 14] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 21 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 7 N/A CUM BD+39-3325 22 WFC3/IR MULTIAC GRISM512 F130N none none none none 8 N/A CUM BD+39-3325 23 WFC3/IR MULTIAC GRISM512 F130N none none none none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 1 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 2 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 3 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 4 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 5 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 6 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 7 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 8 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 9 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 10 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 8 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 15] 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 11 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 8 N/A CUM BD+39-3325 24 WFC3/IR MULTIAC GRISM512 G141 none none 12 none 8 N/A CUM 17920( 6) - 06-Mar-2025 21:46:21 - [ 16] Summary Form for Proposal 17920 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures GRISM512 ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=15, NSAMP=3, NSAMP=6, SAMP-SEQ=RAPID, SAMP-SEQ=SPARS25 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements NEW OBSET, PHASE 0.9967180604387424 TO 0.9973701014111778, POS TARG -16.5, -24, Period 95.8528722 D AND ZERO-PHASE HJD2459718.969335, SCHED 100%, SEQ 1-3 NON-INT, SEQ 10-12 NON-INT, SEQ 13-15 NON-INT, SEQ 16-18 NON-INT, SEQ 19-21 NON-INT, SEQ 22-24 NON-INT, SEQ 4-6 NON-INT, SEQ 7-9 NON-INT, SPATIAL SCAN 0.854369, 90.0 Degrees, Round trip ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F130N, G141 ------------------------------------------------------------------------------------------------------------------------------------ Target Names BD+39-3325 ------------------------------------------------------------------------------------------------------------------------------------