16852( 18) - 15-Nov-2021 13:19:31 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16852 Version: 18 Check-in Time: 15-Nov-2021 13:19:31 STScI Edit Number: 14 Title Characterizing the aftermath of mega-outbursts of Centaur 29P ------------------------------------------------------------------------------------ Type Cycle GO/DD 29 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Dennis Bodewits Auburn University Y CoI: Dr. Jian-Yang Li Planetary Science Institute Y CoI: Alan Stern Southwest Research Institute N CoI: Dr. Maria Womack University of South Florida N CoI: Tony L. Farnham University of Maryland N CoI: Dr. Walter M. Harris University of Arizona N CoI: Dr. Michael S Kelley University of Maryland N CoI: John W Noonan University of Arizona Y ------------------------------------------------------------------------------------ Abstract We request 6 orbits of observing time to investigate the aftermath of a 7 magnitude series of outbursts of centaur 29P/Schwassmann-Wachmann using WFC3/UVIS. At 5.5 au from the Sun, this object is known for its irregular activity. The series of outbursts that started this week (9/27) are the largest on record, making the object brighter than ever before. The event provides a unique opportunity to study material ejected from below the surface and to investigate what processes drive these large outbursts. The versatility of WFC3 is necessary to search for fragments, characterize the morphology and amount of the ejected material, and use narrow and medium band filters to evaluate dust color and content. We request three 2-orbit visits to characterize the ejecta around 29P and to perform a deep search for 100 meter diameter fragments. We will determine the dynamical and color evolution of the ejecta to constrain the kinematics and thus the possible mechanisms of the outbursts. Only HST is capable of capturing the high spatial resolution images necessary to capture faint fragments near the active 29P nucleus to investigate the outbursts and their source. ------------------------------------------------------------------------------------ Observations Description ------------------------ The objectives of the proposal are to characterize morphology and color of the outburst ejecta around 29P and to perform a deep search of any large fragments. Because the outburst ejecta is expanding and darkening, we would like the observations to be scheduled as soon as possible. We plan to organize the 6 orbits into 3 2-orbit visits separated by about 1 week. In each visit, the two orbits should be executed back to back in order to facilitate the color analysis and stacking of images to increase the SNR. Because we only require two consecutive orbits in each visit, and we do not require extreme pointing accuracy with the use of 160" full field of view UVIS, we can disable the gyro bias update for all orbits to gain 5-6 min of extra exposure time in each orbit. 16852( 18) - 15-Nov-2021 13:19:31 - [ 2] Each orbit will consist of 5 full-frame exposures for the largest possible spatial coverage of the ejecta. Each orbit will have two F350LP exposures, one F487N exposure, and two exposures with F689M for one orbit and F845M for the other. We use a two-point dither pattern in each orbit to dither across the chip gap and bad pixels/columns for all filters. In order to avoid the main part of the coma from falling into the chip gap, we will use POSTARG parameters to put the nucleus at 20" from the gap on the opposite chips in the two dither points. The dither will also offset the nucleus by 3" horizontally (along the gap direction). The exposure times are estimated based on the previous observations of 29P with the same instrument and filters. The F689M, F845M, and F487N filters will not saturate the nucleus. The F350LP exposures will saturate the core of the comet in order to perform a deep search for faint fragments around the nucleus. With one 550 s exposures in F350LP filter, we expect to reach a magnitude just over 27 for SNR=5. The 3-sigma position uncertainty of 29P is about 0.05" based on JPL Horizons, i.e., about 1 UVIS pixel, which brings no concerns for the pointing accuracy requirement. No orientation requirement is needed for our observations. ------------------------------------------------------------------------------------ 16852( 18) - 15-Nov-2021 13:19:31 - [ 3] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 TARGET NAME: 29P-SW1 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: COMET Comet29P ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 TYPE=COMET, Q=5.73285105168272, E=0.04410336970518595, I=9.37985821466569 , O=312.5786146183075, W=50.41602027596368, T=07-APR-2019:01:07:11, TTimeScale=TDB, EQUINOX=J2000, EPOCH=31-JAN-2012:00:00:00, EpochTimeScale=TDB ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 14 +/- 1 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 16852( 18) - 15-Nov-2021 13:19:31 - [ 4] Visit: 01 Visit Requirements: BEFORE 01-NOV-2021:00:00:00 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 29P-SW1 WFC3/UVI ACCUM UVIS F689M FLASH=18 1 100 S (100 POS TARG 0, -30; SEQ 1-5 S S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG 0, -30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 29P-SW1 WFC3/UVI ACCUM UVIS F487N FLASH=18 1 500 S (500 POS TARG 0, -30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 4 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 29P-SW1 WFC3/UVI ACCUM UVIS F689M FLASH=18 1 100 S (100 POS TARG -3, 10 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ 29P-SW1 1 WFC3/UVI ACCUM UVIS F689M none none none none 1 N/A S 29P-SW1 2 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 3 WFC3/UVI ACCUM UVIS F487N none none none none 1 N/A S 29P-SW1 4 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 5 WFC3/UVI ACCUM UVIS F689M none none none none 1 N/A S 16852( 18) - 15-Nov-2021 13:19:31 - [ 5] Visit: 02 Visit Requirements: AFTER 01 BY 0.9 Orbits TO 1.1 Orbits; VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET 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 29P-SW1 WFC3/UVI ACCUM UVIS F845M FLASH=16 1 100 S (100 POS TARG 0, -30; SEQ 1-5 S S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 550 S (550 POS TARG 0, -30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 29P-SW1 WFC3/UVI ACCUM UVIS F487N FLASH=18 1 550 S (550 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 4 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 550 S (550 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 29P-SW1 WFC3/UVI ACCUM UVIS F845M FLASH=16 1 100 S (100 POS TARG -3, 10 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ 29P-SW1 1 WFC3/UVI ACCUM UVIS F845M none none none none 1 N/A S 29P-SW1 2 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 3 WFC3/UVI ACCUM UVIS F487N none none none none 1 N/A S 29P-SW1 4 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 5 WFC3/UVI ACCUM UVIS F845M none none none none 1 N/A S 16852( 18) - 15-Nov-2021 13:19:31 - [ 6] Visit: 10 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 29P-SW1 WFC3/UVI ACCUM UVIS F689M FLASH=18 1 100 S (100 POS TARG 0, -30; SEQ 1-5 S S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG 0, -30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 29P-SW1 WFC3/UVI ACCUM UVIS F487N FLASH=18 1 500 S (500 POS TARG 0, -30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 4 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 29P-SW1 WFC3/UVI ACCUM UVIS F689M FLASH=18 1 100 S (100 POS TARG -3, 10 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ 29P-SW1 1 WFC3/UVI ACCUM UVIS F689M none none none none 1 N/A S 29P-SW1 2 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 3 WFC3/UVI ACCUM UVIS F487N none none none none 1 N/A S 29P-SW1 4 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 5 WFC3/UVI ACCUM UVIS F689M none none none none 1 N/A S 16852( 18) - 15-Nov-2021 13:19:31 - [ 7] Visit: 11 Visit Requirements: AFTER 10 BY 0.9 Orbits TO 1.1 Orbits; VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET 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 29P-SW1 WFC3/UVI ACCUM UVIS F845M FLASH=16 1 100 S (100 POS TARG 0, 30; SEQ 1-5 S S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 505 S (505 POS TARG 0, 30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 29P-SW1 WFC3/UVI ACCUM UVIS F487N FLASH=18 1 550 S (550 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 4 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 505 S (505 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 29P-SW1 WFC3/UVI ACCUM UVIS F845M FLASH=16 1 100 S (100 POS TARG -3, 10 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ 29P-SW1 1 WFC3/UVI ACCUM UVIS F845M none none none none 1 N/A S 29P-SW1 2 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 3 WFC3/UVI ACCUM UVIS F487N none none none none 1 N/A S 29P-SW1 4 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 5 WFC3/UVI ACCUM UVIS F845M none none none none 1 N/A S 16852( 18) - 15-Nov-2021 13:19:31 - [ 8] Visit: 20 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 29P-SW1 WFC3/UVI ACCUM UVIS F689M FLASH=18 1 100 S (100 POS TARG 0, 30; SEQ 1-5 S S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG 0, 30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 29P-SW1 WFC3/UVI ACCUM UVIS F487N FLASH=18 1 500 S (500 POS TARG 0, 30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 4 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 29P-SW1 WFC3/UVI ACCUM UVIS F689M FLASH=18 1 100 S (100 POS TARG -3, 10 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ 29P-SW1 1 WFC3/UVI ACCUM UVIS F689M none none none none 1 N/A S 29P-SW1 2 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 3 WFC3/UVI ACCUM UVIS F487N none none none none 1 N/A S 29P-SW1 4 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 5 WFC3/UVI ACCUM UVIS F689M none none none none 1 N/A S 16852( 18) - 15-Nov-2021 13:19:31 - [ 9] Visit: 21 Visit Requirements: AFTER 20 BY 0.9 Orbits TO 1.1 Orbits; VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET 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 29P-SW1 WFC3/UVI ACCUM UVIS F845M FLASH=16 1 100 S (100 POS TARG 0, 30; SEQ 1-5 S S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 505 S (505 POS TARG 0, 30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 29P-SW1 WFC3/UVI ACCUM UVIS F487N FLASH=18 1 550 S (550 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 4 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 505 S (505 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 29P-SW1 WFC3/UVI ACCUM UVIS F845M FLASH=16 1 100 S (100 POS TARG -3, 10 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ 29P-SW1 1 WFC3/UVI ACCUM UVIS F845M none none none none 1 N/A S 29P-SW1 2 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 3 WFC3/UVI ACCUM UVIS F487N none none none none 1 N/A S 29P-SW1 4 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 5 WFC3/UVI ACCUM UVIS F845M none none none none 1 N/A S 16852( 18) - 15-Nov-2021 13:19:31 - [ 10] Visit: 30 Visit Requirements: On Hold Comments: Additional Comments: copy of visit 1, lost due to safing event 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 29P-SW1 WFC3/UVI ACCUM UVIS F689M FLASH=18 1 100 S (100 POS TARG 0, -30; SEQ 1-5 S S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG 0, -30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 29P-SW1 WFC3/UVI ACCUM UVIS F487N FLASH=18 1 500 S (500 POS TARG 0, -30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 4 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 29P-SW1 WFC3/UVI ACCUM UVIS F689M FLASH=18 1 100 S (100 POS TARG -3, 10 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ 29P-SW1 1 WFC3/UVI ACCUM UVIS F689M none none none none 1 N/A S 29P-SW1 2 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 3 WFC3/UVI ACCUM UVIS F487N none none none none 1 N/A S 29P-SW1 4 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 5 WFC3/UVI ACCUM UVIS F689M none none none none 1 N/A S 16852( 18) - 15-Nov-2021 13:19:31 - [ 11] Visit: 31 Visit Requirements: AFTER 30 BY 0.9 Orbits TO 1.1 Orbits; VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET On Hold Comments: Additional Comments: copy of visit 2, lost due to safing event 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 29P-SW1 WFC3/UVI ACCUM UVIS F845M FLASH=16 1 100 S (100 POS TARG 0, -30; SEQ 1-5 S S) NON-INT ------------------------------------------------------------------------------------------------------------------------------------ 2 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG 0, -30 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 29P-SW1 WFC3/UVI ACCUM UVIS F487N FLASH=18 1 550 S (550 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 4 29P-SW1 WFC3/UVI ACCUM UVIS F350LP 1 400 S (400 POS TARG -3, 10 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 29P-SW1 WFC3/UVI ACCUM UVIS F845M FLASH=16 1 100 S (100 POS TARG -3, 10 S 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 | ------------------------------------------------------------------------------------------------------------------------------------ 29P-SW1 1 WFC3/UVI ACCUM UVIS F845M none none none none 1 N/A S 29P-SW1 2 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 3 WFC3/UVI ACCUM UVIS F487N none none none none 1 N/A S 29P-SW1 4 WFC3/UVI ACCUM UVIS F350LP none none none none 1 N/A S 29P-SW1 5 WFC3/UVI ACCUM UVIS F845M none none none none 1 N/A S 16852( 18) - 15-Nov-2021 13:19:31 - [ 12] Summary Form for Proposal 16852 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=16, FLASH=18 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 0.9 Orbits TO 1.1 Orbits, AFTER 10 BY 0.9 Orbits TO 1.1 Orbits, AFTER 20 BY 0.9 Orbits TO 1.1 Orbits, AFTER 30 BY 0.9 Orbits TO 1.1 Orbits, BEFORE 01-NOV-2021:00:00:00, POS TARG -3, 10, POS TARG 0, -30, POS TARG 0, 30, SEQ 1-5 NON-INT, VISIBILITY INTERVAL NO GYRO BIAS UPDATE ON MOVING TARGET ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F350LP, F487N, F689M, F845M ------------------------------------------------------------------------------------------------------------------------------------ Target Names 29P-SW1 ------------------------------------------------------------------------------------------------------------------------------------