14499( 3) - 26-Apr-2016 19:16:44 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14499 Version: 3 Check-in Time: 26-Apr-2016 19:16:44 STScI Edit Number: 0 Title Hubble Heritage imaging of Mars opposition 2016 ------------------------------------------------------------------------------------ Type Cycle GO/DD 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Mr. Zolt Levay Space Telescope Science Institute Y CoI: Max Mutchler Space Telescope Science Institute Y CoI: Ms. Jennifer Mack Space Telescope Science Institute Y CoI: Roberto Avila Space Telescope Science Institute Y CoI: Ms. Lisa Frattare Space Telescope Science Institute N CoI: Ms. Shelly L. Meyett Space Telescope Science Institute Y CoI: Ms. Catherine A Martlin Space Telescope Science Institute N CoI: Dr. Joel David Green Space Telescope Science Institute N CoI: Dr. Carol Christian Space Telescope Science Institute N CoI: Dr. Keith S. Noll NASA Goddard Space Flight Center N CoI: Dr. James F. Bell III Cornell University N CoI: Dr. Michael J. Wolff Space Science Institute N CoI: Sophia Porter The Johns Hopkins University N ------------------------------------------------------------------------------------ Abstract The Hubble Heritage Team proposes observe Mars with WFC3 around the time of opposition in May 2016, in order to produce images for a public release and also high-quality archival data for scientific analysis. ------------------------------------------------------------------------------------ Observations Description ------------------------ We propose to observe Mars near opposition, which occurs on 22 May 2016, to obtain WFC3/UVIS multi-color imaging. Mars will be near the Earth evenly illuminated by the Sun, which is ideal for our observations. It will also be easily visible to the public in the nighttime sky. At opposition, Mars will be at a distance of 0.51 AU, and its disk will subtend a diameter of 18.4 arcsec. Within our one HST orbit, we will sweep through a set of four WFC3 filters (F275W, F410M, F502N, F673N) several times each, and include a small dither shift, to mitigate cosmic rays and detector artifacts. Mars will easily fit within the 1K subarray, which will minimize CTE effects and allow us to obtain over 20 exposures per orbit. We hedge a bit with exposure timess for each filter, since it is difficult to know in advance which Mars features might be prominent at the time of the observation (e.g. polar caps, clouds). Exposure times will generally be short, but some may saturate in spots, and we also use post-flash for some of the shotest exposures. We obtained approval to specify BLADE=A for all exposures to mitigate shutter-driven vibrations. The Hubble Heritage team imaged Mars at opposition in 2007 with WFPC2 (HST program 11361). We used filters F410M, F502N, and F673N. In this proposal we have included a wide UV filter (F275W) which also does not require very long exposures times and could reveal interesting Martian cloud structure. Opposition will be near the end of the aphelion cloud belt season, which was originally discovered 14499( 3) - 26-Apr-2016 19:16:44 - [ 2] using HST. We would like to schedule this observation a week or so before the opposition date, so the public release can coincide with the opposition. ------------------------------------------------------------------------------------ 14499( 3) - 26-Apr-2016 19:16:44 - [ 3] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 TARGET NAME: MARS-OPPOSITION-2016 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: PLANET Mars just before opposition 2016 ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = -1 +/- 2 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 14499( 3) - 26-Apr-2016 19:16:44 - [ 4] Visit: 01 Visit Requirements: BETWEEN 12-MAY-2016:00:00:00 AND 16-MAY-2016:00:00:00 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 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=12, BLADE=A 1 2 S (2 S) TION-2016 S 1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ 2 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F275W BLADE=A, FLASH=12 1 6 S (6 S) TION-2016 S 1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ 3 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F410M FLASH=12, BLADE=A 1 0.5 S (0.5 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 4 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F410M FLASH=12, BLADE=A 1 1.0 S (1 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 5 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F502N FLASH=12, BLADE=A 1 1.0 S (1 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 6 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F502N BLADE=A 1 1.5 S (1.5 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 7 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F673N FLASH=12, BLADE=A 1 0.5 S (0.5 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 8 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F673N FLASH=12, BLADE=A 1 0.8 S (0.8 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 9 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F275W BLADE=A 1 10 S (10 POS TARG 1.0, 1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 10 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F275W BLADE=A, FLASH=12 1 20 S (20 POS TARG 1.0, 1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 11 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F410M BLADE=A 1 1.5 S (1.5 POS TARG 1.0, 1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 12 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F410M BLADE=A 1 2.0 S (2 POS TARG 1.0, 1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 13 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F410M BLADE=A 1 2.5 S (2.5 POS TARG 1.0, 1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 14 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F502N BLADE=A 1 2.0 S (2 POS TARG 1.0, 1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 14499( 3) - 26-Apr-2016 19:16:44 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 15 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F502N BLADE=A 1 2.5 S (2.5 POS TARG 1.0, 1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 16 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F673N BLADE=A 1 0.7 S (0.7 POS TARG 1.0, 1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 17 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F673N BLADE=A 1 1.1 S (1.1 POS TARG 1.0, 1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 18 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F275W BLADE=A 1 8 S (8 S) POS TARG -1.0, -1.0 TION-2016 S 1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ 19 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F275W FLASH=12, BLADE=A 1 4 S (4 S) POS TARG -1.0, -1.0 TION-2016 S 1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ 20 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F410M BLADE=A 1 1.2 S (1.2 POS TARG -1.0, -1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 21 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F410M FLASH=12, BLADE=A 1 0.8 S (0.8 POS TARG -1.0, -1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 22 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F502N BLADE=A 1 1.7 S (1.7 POS TARG -1.0, -1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 23 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F502N FLASH=12, BLADE=A 1 1.2 S (1.2 POS TARG -1.0, -1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 24 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F673N BLADE=A 1 0.9 S (0.9 POS TARG -1.0, -1.0 TION-2016 S 1C-SUB S) ------------------------------------------------------------------------------------------------------------------------------------ 25 MARS-OPPOSI WFC3/UVI ACCUM UVIS2-C1K F673N FLASH=12, BLADE=A 1 0.5 S (0.5 POS TARG -1.0, -1.0 TION-2016 S 1C-SUB 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS-OPPOSITION-201 1 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 2 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 3 WFC3/UVI ACCUM UVIS2-C1 F410M none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 4 WFC3/UVI ACCUM UVIS2-C1 F410M none none none none 1 N/A 6 S K1C-SUB 14499( 3) - 26-Apr-2016 19:16:44 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS-OPPOSITION-201 5 WFC3/UVI ACCUM UVIS2-C1 F502N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 6 WFC3/UVI ACCUM UVIS2-C1 F502N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 7 WFC3/UVI ACCUM UVIS2-C1 F673N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 8 WFC3/UVI ACCUM UVIS2-C1 F673N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 9 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 10 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 11 WFC3/UVI ACCUM UVIS2-C1 F410M none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 12 WFC3/UVI ACCUM UVIS2-C1 F410M none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 13 WFC3/UVI ACCUM UVIS2-C1 F410M none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 14 WFC3/UVI ACCUM UVIS2-C1 F502N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 15 WFC3/UVI ACCUM UVIS2-C1 F502N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 16 WFC3/UVI ACCUM UVIS2-C1 F673N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 17 WFC3/UVI ACCUM UVIS2-C1 F673N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 18 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 19 WFC3/UVI ACCUM UVIS2-C1 F275W none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 20 WFC3/UVI ACCUM UVIS2-C1 F410M none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 21 WFC3/UVI ACCUM UVIS2-C1 F410M none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 22 WFC3/UVI ACCUM UVIS2-C1 F502N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 23 WFC3/UVI ACCUM UVIS2-C1 F502N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 24 WFC3/UVI ACCUM UVIS2-C1 F673N none none none none 1 N/A 6 S K1C-SUB MARS-OPPOSITION-201 25 WFC3/UVI ACCUM UVIS2-C1 F673N none none none none 1 N/A 6 S K1C-SUB 14499( 3) - 26-Apr-2016 19:16:44 - [ 7] Summary Form for Proposal 14499 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2-C1K1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BLADE=A, FLASH=12 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 12-MAY-2016:00:00:00 AND 16-MAY-2016:00:00:00, POS TARG -1.0, -1.0, POS TARG 1.0, 1.0 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F275W, F410M, F502N, F673N ------------------------------------------------------------------------------------------------------------------------------------ Target Names MARS-OPPOSITION-2016 ------------------------------------------------------------------------------------------------------------------------------------