17282( 3) - 09-Feb-2023 23:07:22 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17282 Version: 3 Check-in Time: 09-Feb-2023 23:07:22 STScI Edit Number: 0 Title Ultraviolet Photometry of TRAPPIST-1 during the next JWST Observing Window ------------------------------------------------------------------------------------ Type Cycle GO 30 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. David John Wilson University of Colorado at Boulder Y CoI: Dr. Cynthia Suzanne Froning University of Texas at Austin N CoI: Prof. Kevin France University of Colorado at Boulder N CoI: Dr. Allison Youngblood NASA Goddard Space Flight Center N CoI: Prof. Peter J. Wheatley The University of Warwick N ------------------------------------------------------------------------------------ Abstract With the successful launch of JWST, the atmospheres of rocky exoplanets are finally within reach. The exemplary host star is TRAPPIST-1, orbited by seven Earth-sized planets. Here we seek to obtain time-series ultraviolet photometry of TRAPPIST-1 during the next JWST observing window, providing vital information for interpreting ongoing JWST transit and eclipse spectroscopy. The TRAPPIST-1 planets experience a radically different ultraviolet flux than the Earth, changing photochemical reaction rates of key molecules and biomarkers such as ozone. Detailed knowledge of the stellar ultraviolet SED is required to correctly interpret upcoming JWST spectroscopy to characterize the atmospheres and potential habitability of the planets. A large investment of HST spectroscopy time into TRAPPIST-1 has returned only low signal detections of a few stellar emission lines, and essentially no constraints on the ultraviolet variability. Here, we will use ultraviolet photometry, which provides high-quality data in multiple bands with much less HST time. We will observe TRAPPIST-1 three times in five ultraviolet bands. In the NUV, we will characterize the as-yet unconstrained continuum flux that is a key driver of atmospheric chemistry, and measure the 2800A Mg II lines to diagnose the chromospheric structure. In the FUV, we will observe the C IV 1550A doublet to estimate the strength of the total FUV flux. These observations will provide a contemporaneous ultraviolet dataset for each JWST observation and the first constraints on the ultraviolet variability of TRAPPIST-1. Photometric measurements from the observations will be made available as a MAST High Level Science Product. ------------------------------------------------------------------------------------ Observations Description ------------------------ The aim is to obtain ultraviolet photometry of TRAPPIST-1 during the next window where both JWST and HST can observe TRAPPIST-1. The expected return is a single flux meaurement in each filter per visit, not an in-visit light curve. Three two-vist blocks are requested. The two visits in each block should be scheduled on the same day, ideally one right after the other. The three blocks should be spread across the June 1st - July 23rd window as evenly as possible 17282( 3) - 09-Feb-2023 23:07:22 - [ 2] (I've separated them by a nominal 7 days in the phase two but ideally this should be longer). If scheduling allows, timing one or more of the visits to be simultaneous with a JWST observation of TRAPPIST-1 would provide enhanced science, but is not a requirement. Each two-visit block consists of one visit with WFC3-UVIS and one with ACS-SBC. The WFC visits contain three orbits, each with 2x F225W exposure, 1x F275W exposure and 1x F280N exposure. The W filters probe the NUV continuum and the N filter measures the strength of the Mg II 2800A lines. We expect the F275W and F280N observations to return S/N 10-20 per visit. The expected F225W flux is basically unconstrained and its measurement (or an upper limit) will be a key result of this program. The ACS visits contain one orbit each of the F150LP and F165LP filters. When subtracted, these will measure the strength of the C IV 1550A lines. We predict S/N 10-20 in each filter, although this is somewhat uncertain due to the low quality of existing COS spectra. ------------------------------------------------------------------------------------ 17282( 3) - 09-Feb-2023 23:07:22 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 TRAPPIST-1 EXT-STAR, LATE-TYPE RA=23H06M30.3341S, J2000 V = 18.798 DEGENERATE DEC=-05D02'36.46" Reference Frame: Other: SIMBAD Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2015.5 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 17282( 3) - 09-Feb-2023 23:07:22 - [ 4] Visit: 01 (WFC3-1) Visit Requirements: BETWEEN 01-JUN-2023:00:00:00 AND 23-JUL-2023:00:00:00 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 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F280N FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=20 2 590 S S 1C-SUB (1180 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 5 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F280N FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 6 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=20 2 590 S S 1C-SUB (1180 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 8 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F280N FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 9 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=20 2 590 S S 1C-SUB (1180 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 | ------------------------------------------------------------------------------------------------------------------------------------ TRAPPIST-1 1 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 1 N/A S K1C-SUB TRAPPIST-1 2 WFC3/UVI ACCUM UVIS2-C1 F280N none none none none 1 N/A S K1C-SUB TRAPPIST-1 3 WFC3/UVI ACCUM UVIS2-C1 F225W none none 1 none 1 N/A S K1C-SUB TRAPPIST-1 3 WFC3/UVI ACCUM UVIS2-C1 F225W none none 2 none 1 N/A S K1C-SUB 17282( 3) - 09-Feb-2023 23:07:22 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ TRAPPIST-1 4 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 2 N/A S K1C-SUB TRAPPIST-1 5 WFC3/UVI ACCUM UVIS2-C1 F280N none none none none 2 N/A S K1C-SUB TRAPPIST-1 6 WFC3/UVI ACCUM UVIS2-C1 F225W none none 1 none 2 N/A S K1C-SUB TRAPPIST-1 6 WFC3/UVI ACCUM UVIS2-C1 F225W none none 2 none 2 N/A S K1C-SUB TRAPPIST-1 7 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 3 N/A S K1C-SUB TRAPPIST-1 8 WFC3/UVI ACCUM UVIS2-C1 F280N none none none none 3 N/A S K1C-SUB TRAPPIST-1 9 WFC3/UVI ACCUM UVIS2-C1 F225W none none 1 none 3 N/A S K1C-SUB TRAPPIST-1 9 WFC3/UVI ACCUM UVIS2-C1 F225W none none 2 none 3 N/A S K1C-SUB 17282( 3) - 09-Feb-2023 23:07:22 - [ 6] Visit: 02 (ACS-1) Visit Requirements: AFTER 01 BY 0 D TO 1 D 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 TRAPPIST-1 ACS/SBC ACCUM SBC F150LP 2 1300 S POS TARG 1, 1 (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TRAPPIST-1 ACS/SBC ACCUM SBC F165LP 2 1300 S POS TARG 1, 1 (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TRAPPIST-1 1 ACS/SBC ACCUM SBC F150LP none none 1 none 1 N/A TRAPPIST-1 1 ACS/SBC ACCUM SBC F150LP none none 2 none 1 N/A TRAPPIST-1 2 ACS/SBC ACCUM SBC F165LP none none 1 none 2 N/A TRAPPIST-1 2 ACS/SBC ACCUM SBC F165LP none none 2 none 2 N/A 17282( 3) - 09-Feb-2023 23:07:22 - [ 7] Visit: 03 (WFC3-2) Visit Requirements: AFTER 02 BY 7 D TO 100 D; BETWEEN 01-JUN-2023:00:00:00 AND 23-JUL-2023:00:00:00 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 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F280N FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=20 2 590 S S 1C-SUB (1180 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 5 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F280N FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 6 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=20 2 590 S S 1C-SUB (1180 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 8 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F280N FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 9 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=20 2 590 S S 1C-SUB (1180 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 | ------------------------------------------------------------------------------------------------------------------------------------ TRAPPIST-1 1 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 1 N/A S K1C-SUB TRAPPIST-1 2 WFC3/UVI ACCUM UVIS2-C1 F280N none none none none 1 N/A S K1C-SUB TRAPPIST-1 3 WFC3/UVI ACCUM UVIS2-C1 F225W none none 1 none 1 N/A S K1C-SUB TRAPPIST-1 3 WFC3/UVI ACCUM UVIS2-C1 F225W none none 2 none 1 N/A S K1C-SUB 17282( 3) - 09-Feb-2023 23:07:22 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TRAPPIST-1 4 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 2 N/A S K1C-SUB TRAPPIST-1 5 WFC3/UVI ACCUM UVIS2-C1 F280N none none none none 2 N/A S K1C-SUB TRAPPIST-1 6 WFC3/UVI ACCUM UVIS2-C1 F225W none none 1 none 2 N/A S K1C-SUB TRAPPIST-1 6 WFC3/UVI ACCUM UVIS2-C1 F225W none none 2 none 2 N/A S K1C-SUB TRAPPIST-1 7 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 3 N/A S K1C-SUB TRAPPIST-1 8 WFC3/UVI ACCUM UVIS2-C1 F280N none none none none 3 N/A S K1C-SUB TRAPPIST-1 9 WFC3/UVI ACCUM UVIS2-C1 F225W none none 1 none 3 N/A S K1C-SUB TRAPPIST-1 9 WFC3/UVI ACCUM UVIS2-C1 F225W none none 2 none 3 N/A S K1C-SUB 17282( 3) - 09-Feb-2023 23:07:22 - [ 9] Visit: 04 (ACS-2) Visit Requirements: AFTER 03 BY 0 D TO 1 D 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 TRAPPIST-1 ACS/SBC ACCUM SBC F150LP 2 1300 S POS TARG 1, 1 (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TRAPPIST-1 ACS/SBC ACCUM SBC F165LP 2 1300 S POS TARG 1, 1 (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TRAPPIST-1 1 ACS/SBC ACCUM SBC F150LP none none 1 none 1 N/A TRAPPIST-1 1 ACS/SBC ACCUM SBC F150LP none none 2 none 1 N/A TRAPPIST-1 2 ACS/SBC ACCUM SBC F165LP none none 1 none 2 N/A TRAPPIST-1 2 ACS/SBC ACCUM SBC F165LP none none 2 none 2 N/A 17282( 3) - 09-Feb-2023 23:07:22 - [ 10] Visit: 05 (WFC3-3) Visit Requirements: AFTER 04 BY 7 D TO 100 D; BETWEEN 01-JUN-2023:00:00:00 AND 23-JUL-2023:00:00:00 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 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F280N FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=20 2 590 S S 1C-SUB (1180 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 5 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F280N FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 6 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=20 2 590 S S 1C-SUB (1180 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 8 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F280N FLASH=20 1 590 S (590 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 9 TRAPPIST-1 WFC3/UVI ACCUM UVIS2-C1K F225W FLASH=20 2 590 S S 1C-SUB (1180 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 | ------------------------------------------------------------------------------------------------------------------------------------ TRAPPIST-1 1 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 1 N/A S K1C-SUB TRAPPIST-1 2 WFC3/UVI ACCUM UVIS2-C1 F280N none none none none 1 N/A S K1C-SUB TRAPPIST-1 3 WFC3/UVI ACCUM UVIS2-C1 F225W none none 1 none 1 N/A S K1C-SUB TRAPPIST-1 3 WFC3/UVI ACCUM UVIS2-C1 F225W none none 2 none 1 N/A S K1C-SUB 17282( 3) - 09-Feb-2023 23:07:22 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TRAPPIST-1 4 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 2 N/A S K1C-SUB TRAPPIST-1 5 WFC3/UVI ACCUM UVIS2-C1 F280N none none none none 2 N/A S K1C-SUB TRAPPIST-1 6 WFC3/UVI ACCUM UVIS2-C1 F225W none none 1 none 2 N/A S K1C-SUB TRAPPIST-1 6 WFC3/UVI ACCUM UVIS2-C1 F225W none none 2 none 2 N/A S K1C-SUB TRAPPIST-1 7 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 3 N/A S K1C-SUB TRAPPIST-1 8 WFC3/UVI ACCUM UVIS2-C1 F280N none none none none 3 N/A S K1C-SUB TRAPPIST-1 9 WFC3/UVI ACCUM UVIS2-C1 F225W none none 1 none 3 N/A S K1C-SUB TRAPPIST-1 9 WFC3/UVI ACCUM UVIS2-C1 F225W none none 2 none 3 N/A S K1C-SUB 17282( 3) - 09-Feb-2023 23:07:22 - [ 12] Visit: 06 (ACS-3) Visit Requirements: AFTER 05 BY 0 D TO 1 D 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 TRAPPIST-1 ACS/SBC ACCUM SBC F150LP 2 1300 S POS TARG 1, 1 (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TRAPPIST-1 ACS/SBC ACCUM SBC F165LP 2 1300 S POS TARG 1, 1 (2600 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ TRAPPIST-1 1 ACS/SBC ACCUM SBC F150LP none none 1 none 1 N/A TRAPPIST-1 1 ACS/SBC ACCUM SBC F150LP none none 2 none 1 N/A TRAPPIST-1 2 ACS/SBC ACCUM SBC F165LP none none 1 none 2 N/A TRAPPIST-1 2 ACS/SBC ACCUM SBC F165LP none none 2 none 2 N/A 17282( 3) - 09-Feb-2023 23:07:22 - [ 13] Summary Form for Proposal 17282 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures SBC, UVIS2-C1K1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/SBC, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=20 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 0 D TO 1 D, AFTER 02 BY 7 D TO 100 D, AFTER 03 BY 0 D TO 1 D, AFTER 04 BY 7 D TO 100 D, AFTER 05 BY 0 D TO 1 D, BETWEEN 01-JUN-2023:00:00:00 AND 23-JUL-2023:00:00:00, POS TARG 1, 1 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F150LP, F165LP, F225W, F275W, F280N ------------------------------------------------------------------------------------------------------------------------------------ Target Names TRAPPIST-1 ------------------------------------------------------------------------------------------------------------------------------------