15976( 9) - 30-Oct-2019 18:53:18 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15976 Version: 9 Check-in Time: 30-Oct-2019 18:53:18 STScI Edit Number: 0 Title Constraining Water Loss from Mars ------------------------------------------------------------------------------------ Type Cycle GO 27 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Majd A Mayyasi Boston University Y CoI: Prof. John T. Clarke Boston University N CoI: Dr. Jean-Ives Chaufray LATMOS N CoI: Dr. Geronimo Villanueva NASA Goddard Space Flight Center N CoI: Dr. Franck Montmessin LATMOS N CoI: Dr. Dolon Bhattacharyya University of Illinois at Urbana - N Champaign ------------------------------------------------------------------------------------ Abstract How does water loss at Mars vary with time? Early theory predicted a slow and steady loss, where surface water molecules are dissociated by sunlight into atoms that take dozens of years to diffuse to the upper atmosphere and escape to space. Recent observations showed water escape rates to vary by a factor of 10 with martian seasons, consistent with variations near the surface and lower atmosphere of Mars - the regions that provide water to the upper atmosphere by global turbulent mixing during perihelion. However, key water constituents in the upper atmosphere, hydrogen (H) and its heavier isotope deuterium (D), vary on timescales that differ from the lower atmosphere indicating a surface-to-space water cycle that does not reconcile with theory. Upper atmospheric H and D comprise the escaping components of planetary water. The ratio and variability of their abundance, D/H, is a key metric for determining water loss. Understanding water loss requires establishing a full seasonal timeline of D and H densities. A Mars orbiter can presently make such measurements near perihelion but does not have the sensitivity to measure D near aphelion, thereby leaving a glaring gap in our ability to establish seasonal variations of water escape. Here we propose to observe D at Mars with HST STIS at times when no other instrument can. The results will address a two-part science investigation: to determine the variability of D/H (1) seasonally, and (2) with solar activity using new and archived HST data. The observations will be conducted in parallel with lower (H2O, HDO) and upper (D, H) atmospheric water measurements from orbiting spacecraft. This proposal supports the HST UV initiative. ------------------------------------------------------------------------------------ Observations Description ------------------------ This program requires high-resolution observations of Mars to resolve the solar Lyman-alpha photons for D and H that are separated by 0.33 Angstrom. The HST STIS E140H echelle spectrograph has a resolution of 0.057 Angstrom using the 0.5 Angstrom aperture and is sufficient to separate the D and H lines. We propose to utilize the TIMETAG configuration with the 52x0.5 arcsec aperture for the STIS observations. The long-aperture mode that provides a higher count rate for the extended emission region, has been well demonstrated in observations of Mars, Jupiter and the interplanetary hydrogen, and can obtain 15976( 9) - 30-Oct-2019 18:53:18 - [ 2] spectra across the entire martian disc and limb. The HST STIS observations requested can be conducted at any roll angle since we can account for the observing geometry when modeling the lines of sight to Mars. Both Mars as well Earth's corona emit resonantly scattered solar Lyman-alpha. Past observations have shown the background geocorona emission to be highly variable and would necessitate consistent measurement. Therefore, a sky observation near Mars, during the same visit is needed to accurately subtract the Lyman-alpha emissions of the background geocorona and interplanetary hydrogen. This measurement will require pointing the line of sight at a portion of the sky a few arcmin away from Mars. This program conforms to safe observing of Mars (where the instrument line of sight is more than 55 degrees from the Sun). Specifically, between March and June 2020. A minimum of three data points of HST-observed D Lyman-alpha emissions are needed during the off-perihelion range in order to disambiguate a linear vs polynomial trend in D variability and to assess sudden vs gradual variations. Visits are therefore requested at Ls of 160, 185, and 210 degrees in order to obtain an adequate slope of the enhancement of D emission brightness and water escape rate as the martian seasons change. A total of 4 orbits are requested when Mars is at Ls of 160, three of which are pointed at the disk of Mars, and one of which points at the sky near Mars to account for sky background during image reduction and analysis. A similar sequence is requested for when Mars is at Ls of 185. Finally, one sequence is requested when Mars is at Ls 210 with 3 orbits requested. Two for Mars and one for the sky near Mars. The orbits with exposures targeting the near-Mars sky background, a pointing offset of ~3 arcmin away from the Mars disk is requested, to gather a background telluric and interplanetary Lyman-alpha signal. The remaining orbits will point at Mars. The STIS E140H 0.5 arcsec aperture gives 5 counts/sec/kR integrating across the 52 arcsec detector. Assuming 2400 second integration per orbit, we would get 300 counts from a 25 Rayleigh emission (expected near aphelion). Three orbits are requested for the first epochs (correponding to Ls 160 and 185 degrees) in order to obtain an adequate signal to noise. Only two orbits would be required for the third visit (requested at 210 degrees Ls) since the D emission is expected to be brighter at that time. Observations from the three visits would be analyzed to calculate the D/H ratio and water escape rate over the present Mars year as the orbital position of Mars progresses toward perihelion. The observations from the three visits will uniquely convey how the properties of water change with season in the present epoch. ------------------------------------------------------------------------------------ 15976( 9) - 30-Oct-2019 18:53:18 - [ 3] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 TARGET NAME: MARS1-LS160 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: PLANET Planet MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 1.08 +/- 0.03 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 2 TARGET NAME: MARS1-LS160-BCKSKY ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: PLANET Planet MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=MARS TYPE=POS_ANGLE, RAD=300, ANG=0, REF=NORTH ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF MARS1-LS160-BCKSKY BY MARS FROM EARTH, SEP OF MARS1-LS160-BCKSKY MARS FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 1.08 +/- 0.03 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 15976( 9) - 30-Oct-2019 18:53:18 - [ 4] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 3 TARGET NAME: MARS2-LS185 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: PLANET Planet MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 0.6 +/- 0.05 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 4 TARGET NAME: MARS2-LS185-BCKSKY ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: PLANET Planet MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=MARS TYPE=POS_ANGLE, RAD=300, ANG=0, REF=NORTH ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF MARS2-LS185-BCKSKY BY MARS FROM EARTH, SEP OF MARS2-LS185-BCKSKY MARS FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 0.6 +/- 0.05 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 15976( 9) - 30-Oct-2019 18:53:18 - [ 5] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 5 TARGET NAME: MARS3-LS210 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: PLANET Planet MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 0.01 +/- 0.04 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 6 TARGET NAME: MARS3-LS210-BCKSKY ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: PLANET Planet MARS ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=MARS TYPE=POS_ANGLE, RAD=300, ANG=0, REF=NORTH ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF MARS3-LS210-BCKSKY BY MARS FROM EARTH, SEP OF MARS3-LS210-BCKSKY MARS FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 0.01 +/- 0.04 Ephemeris Center: EARTH Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 15976( 9) - 30-Oct-2019 18:53:18 - [ 6] Visit: 01 (MARS1-LS160-VISIT1) Visit Requirements: BETWEEN 01-MAR-2020:00:00:00 AND 07-MAR-2020:23:59:59; GROUP 01, 02, 03 WITHIN 1D; VISIBILITY INTERVAL 50 M 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 MARS1-LS160 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1250, WAVECAL=NO 1 2500 S -MAMA G see below (2429 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 3 MARS1-LS160 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1365, WAVECAL=NO 1 2730 S -MAMA G see below (2616 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS1-LS160 1 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 1 2429.0 S -MAMA G WAVE 2 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 1 N/A -MAMA MARS1-LS160 3 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 2 2616.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 2 N/A -MAMA 15976( 9) - 30-Oct-2019 18:53:18 - [ 7] Visit: 02 (MARS1-LS160-VISIT2) Visit Requirements: BETWEEN 01-MAR-2020:00:00:00 AND 07-MAR-2020:23:59:59; VISIBILITY INTERVAL 50 M 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 MARS1-LS160 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1250, WAVECAL=NO 1 2500 S -MAMA G see below (2429 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS1-LS160 1 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 1 2429.0 S -MAMA G WAVE 2 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 1 N/A -MAMA 15976( 9) - 30-Oct-2019 18:53:18 - [ 8] Visit: 03 (MARS1-LS160-VISIT3) Visit Requirements: BETWEEN 01-MAR-2020:00:00:00 AND 07-MAR-2020:23:59:59; VISIBILITY INTERVAL 50 M 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 MARS1-LS160 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1285, WAVECAL=NO 1 2570 S -BCKSKY -MAMA G see below (2429 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS1-LS160-BCKSKY 1 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 1 2429.0 S -MAMA G WAVE 2 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 1 N/A -MAMA 15976( 9) - 30-Oct-2019 18:53:18 - [ 9] Visit: 04 (MARS2-LS185-VISIT1) Visit Requirements: BETWEEN 12-APR-2020:00:00:00 AND 21-APR-2020:23:59:59; GROUP 04, 05, 06 WITHIN 1D; VISIBILITY INTERVAL 50 M 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 MARS2-LS185 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1250, WAVECAL=NO 1 2500 S -MAMA G see below (2429 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 3 MARS2-LS185 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1365, WAVECAL=NO 1 2730 S -MAMA G see below (2616 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS2-LS185 1 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 1 2429.0 S -MAMA G WAVE 2 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 1 N/A -MAMA MARS2-LS185 3 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 2 2616.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 2 N/A -MAMA 15976( 9) - 30-Oct-2019 18:53:18 - [ 10] Visit: 05 (MARS2-LS185-VISIT2) Visit Requirements: BETWEEN 12-APR-2020:00:00:00 AND 21-APR-2020:23:59:59; VISIBILITY INTERVAL 50 M 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 MARS2-LS185 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1250, WAVECAL=NO 1 2500 S -MAMA G see below (2429 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS2-LS185 1 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 1 2429.0 S -MAMA G WAVE 2 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 1 N/A -MAMA 15976( 9) - 30-Oct-2019 18:53:18 - [ 11] Visit: 06 (MARS2-LS185-VISIT3) Visit Requirements: BETWEEN 12-APR-2020:00:00:00 AND 21-APR-2020:23:59:59; VISIBILITY INTERVAL 50 M 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 MARS2-LS185 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1285, WAVECAL=NO 1 2570 S -BCKSKY -MAMA G see below (2429 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS2-LS185-BCKSKY 1 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 1 2429.0 S -MAMA G WAVE 2 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 1 N/A -MAMA 15976( 9) - 30-Oct-2019 18:53:18 - [ 12] Visit: 07 (MARS3-LS210-VISIT1) Visit Requirements: BETWEEN 27-MAY-2020:00:00:00 AND 02-JUN-2020:23:59:59; GROUP 07, 08 WITHIN 1D; VISIBILITY INTERVAL 50 M 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 MARS3-LS210 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1250, WAVECAL=NO 1 2500 S -MAMA G see below (2429 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 3 MARS3-LS210 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1365, WAVECAL=NO 1 2730 S -MAMA G see below (2616 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS3-LS210 1 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 1 2429.0 S -MAMA G WAVE 2 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 1 N/A -MAMA MARS3-LS210 3 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 2 2616.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 2 N/A -MAMA 15976( 9) - 30-Oct-2019 18:53:18 - [ 13] Visit: 08 (MARS3-LS210-VISIT2) Visit Requirements: BETWEEN 27-MAY-2020:00:00:00 AND 02-JUN-2020:23:59:59; VISIBILITY INTERVAL 50 M 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 MARS3-LS210 STIS/FUV TIME-TA 52X0.5 E140H 1234 BUFFER-TIME=1285, WAVECAL=NO 1 2570 S -BCKSKY -MAMA G see below (2429 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 WAVE STIS/FUV ACCUM 0.2X0.09 E140H 1234 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MARS3-LS210-BCKSKY 1 STIS/FUV TIME-TA 52X0.5 E140H 1234 none none none none 1 2429.0 S -MAMA G WAVE 2 STIS/FUV ACCUM 0.2X0.09 E140H 1234 none none none none 1 N/A -MAMA 15976( 9) - 30-Oct-2019 18:53:18 - [ 14] Summary Form for Proposal 15976 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 0.2X0.09, 52X0.5 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/FUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=1250, BUFFER-TIME=1285, BUFFER-TIME=1365, WAVECAL=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 01-MAR-2020:00:00:00 AND 07-MAR-2020:23:59:59, BETWEEN 12-APR-2020:00:00:00 AND 21-APR-2020:23:59:59, BETWEEN 27-MAY-2020:00:00:00 AND 02-JUN-2020:23:59:59, GROUP 01, 02, 03 WITHIN 1D, GROUP 04, 05, 06 WITHIN 1D, GROUP 07, 08 WITHIN 1D, VISIBILITY INTERVAL 50 M ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements E140H ------------------------------------------------------------------------------------------------------------------------------------ Target Names MARS1-LS160, MARS1-LS160-BCKSKY, MARS2-LS185, MARS2-LS185-BCKSKY, MARS3-LS210, MARS3-LS210-BCKSKY, WAVE ------------------------------------------------------------------------------------------------------------------------------------