16499( 7) - 13-May-2021 12:07:58 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16499 Version: 7 Check-in Time: 13-May-2021 12:07:58 STScI Edit Number: 2 Title Providing Context for Juno's only Close Ganymede Flyby ------------------------------------------------------------------------------------ Type Cycle GO 28 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Joachim Saur Universitat zu Koeln Y CoI: Dr. G. Randall Gladstone Southwest Research Institute N CoI: Dr. Lorenz Roth Royal Institute of Technology N CoI: Dr. Kurt David Retherford Southwest Research Institute N CoI: Prof. Denis C Grodent Universite de Liege N CoI: Dr. Bertrand Bonfond Universite de Liege N CoI: Dr. Alexandre Wennmacher Universitat zu Koeln N CoI: Clarissa Willmes Universitat zu Koeln N CoI: Abigail Rymer The Johns Hopkins University Applied N Physics Laboratory CoI: Dr. Fran Bagenal University of Colorado at Boulder N CoI: Dr. Scott Jay Bolton Southwest Research Institute N CoI: Dr. Candice Hansen Planetary Science Institute N CoI: Dr. Darrell F. Strobel The Johns Hopkins University N CoI: Dr. George B Clark The Johns Hopkins University Applied N Physics Laboratory CoI: Dr. Glenn S. Orton Jet Propulsion Laboratory N ------------------------------------------------------------------------------------ Abstract Jupiter's planet-sized satellite Ganymede is the only known moon with a mini-magnetosphere and two auroral ovals. In its only close flyby of Ganymede, NASA's Juno spacecraft is scheduled to pass through the satellite's magnetotail on June 7, 2021. The magnetotail is the region where magnetic reconnection and energization is expected to be strongest. Juno's flyby provides a unique opportunity to make significant progress about the poorly understood processes which energize Ganymede's magnetosphere and power its auroral emissions. The flyby occurs over a short time-span of only approximately 30 minutes. We propose 6 HST orbits to observe Ganymede's aurora which will provide important context and assist with the interpretation of the Juno observations. We request three HST orbits before the Juno flyby to establish the state of the aurora prior to the flyby and three additional orbits after the Juno flyby to monitor the changes in Ganymede's aurora after the flyby. The moon's aurora is known to vary on timescales of Juno's flyby and the proposed HST observations. The collection of HST observations over these timescales will enable an investigation of how conditions and events observed by Juno are related to changes in Ganymede's aurora observed by HST. The Juno flyby provides a very important and unique opportunity for HST to complement investigations of NASA's solar system exploration program and improve our understanding of the only magnetosphere in the solar system without a bow shock. ------------------------------------------------------------------------------------ Observations Description ------------------------ 16499( 7) - 13-May-2021 12:07:58 - [ 2] We plan 2 visits of 3 orbits each with STIS to observe Ganymede at western elongation in coordination with the Juno flyby on June 7, 2021. We will use STIS with grating G140L at central wavelength 1425 A and a slit of 2.0 arcsec width. The size of Ganymede is slightly less than 2.0 arcsec and thus Ganymede's aurora can be completely observed. We will observe in TIMETAG mode to resolve temporal variability and to remove any parts of the orbits highly contaminated by geocoronal noise. The scheduling is dictated by the timing of the Juno flyby. We ask for three HST orbits before the Juno flyby and three orbits after the Juno flyby. Depending on the availabilty of the Hydro Mode for HST's guiding modes, the three orbits of each visit will be executed consecutively or will be split up into one visit with two consecutive orbits and one visit with only one orbit. If the Hydro Mode is available, we chose for the visit after the Juno flyby three orbits (#4, 5, 6) the ones immediately available after closest approach. The orbits before the Juno flyby (#1, 2, 3) we chose to be close, but at the same time symmetric with respect to Ganymede's position in the plasma sheet similar to the orbits #4, 5, 6. Therefore we plan not to observe during the last available HST orbit just before HST enters the phase impaired by the SAA. Depending on the results of the final timing and the availabilities of orbits in the time leading up the Ganymede flyby, we might choose different combinations for the orbits #1, 2, 3. We will weigh between proximity to the time of the flyby and symmetry with orbits #4, 5, 6. ------------------------------------------------------------------------------------ 16499( 7) - 13-May-2021 12:07:58 - [ 3] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 TARGET NAME: GANYMEDE-PJ34 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Satellite Ganymede ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 STD=JUPITER STD=GANYMEDE ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS NOT OCC OF GANYMEDE-PJ34 BY JUPITER FROM EARTH, SEP OF GANYMEDE-PJ34 IO FROM EARTH GT 10", SEP OF GANYMEDE-PJ34 EUROPA FROM EARTH GT 10", SEP OF GANYMEDE-PJ34 CALLISTO FROM EARTH GT 10" ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 4.6 Ephemeris Center: EARTH ------------------------------------------------------------------------------------------------------------------------------------ 16499( 7) - 13-May-2021 12:07:58 - [ 4] Visit: 01 (Consec: Before JUNO C/A) Visit Requirements: SCHED 100%; BETWEEN 07-JUN-2021:00:00:00 AND 07-JUN-2021:00:30:00; VISIBILITY INTERVAL 46 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 GANYMEDE-PJ STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, 1 0.1 S (0.1 34 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R, CHECKBOX=33 ------------------------------------------------------------------------------------------------------------------------------------ 2 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 1631 S 34 -MAMA G (1631 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 WAVE STIS/FUV ACCUM 52X0.05 G140L 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 2291 S 34 -MAMA G (2291 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 WAVE STIS/FUV ACCUM 52X0.05 G140L 1425 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 6 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500, WAVECAL=NO 1 1000 S SEQ 6-8 NON-INT 34 -MAMA G (1000 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500, WAVECAL=NO 1 1076 S 34 -MAMA G (1076 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 WAVE STIS/FUV ACCUM 52X0.05 G140L 1425 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 | ------------------------------------------------------------------------------------------------------------------------------------ GANYMEDE-PJ34 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A GANYMEDE-PJ34 2 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 1 N/A -MAMA G WAVE 3 STIS/FUV ACCUM 52X0.05 G140L 1425 none none none none 1 N/A -MAMA GANYMEDE-PJ34 4 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 2 N/A -MAMA G WAVE 5 STIS/FUV ACCUM 52X0.05 G140L 1425 none none none none 3 N/A -MAMA 16499( 7) - 13-May-2021 12:07:58 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GANYMEDE-PJ34 6 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 3 N/A -MAMA G GANYMEDE-PJ34 7 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 3 N/A -MAMA G WAVE 8 STIS/FUV ACCUM 52X0.05 G140L 1425 none none none none 3 N/A -MAMA 16499( 7) - 13-May-2021 12:07:58 - [ 6] Visit: 02 (Consec: After JUNO C/A) Visit Requirements: SCHED 100%; BETWEEN 07-JUN-2021:19:00:00 AND 07-JUN-2021:19:30:00 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 GANYMEDE-PJ STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, 1 0.1 S (0.1 GS ACQ SCENARIO SINGLE; 34 DIFFUSE-CENTER=GEOMETRIC-CENTE S) SEQ 1-4 NON-INT R, CHECKBOX=33 ------------------------------------------------------------------------------------------------------------------------------------ 2 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500, WAVECAL=NO 1 866 S (866 34 -MAMA G S) ------------------------------------------------------------------------------------------------------------------------------------ 3 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500, WAVECAL=NO 1 800 S (800 34 -MAMA G S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.05 G140L 1425 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 | ------------------------------------------------------------------------------------------------------------------------------------ GANYMEDE-PJ34 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A GANYMEDE-PJ34 2 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 1 N/A -MAMA G GANYMEDE-PJ34 3 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 1 N/A -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.05 G140L 1425 none none none none 1 N/A -MAMA 16499( 7) - 13-May-2021 12:07:58 - [ 7] Visit: 03 (Non-consec: Before JUNO C/A) Visit Requirements: SCHED 100%; BETWEEN 07-JUN-2021:00:00:00 AND 07-JUN-2021:00:30:00; ON HOLD On Hold Comments: In case Hybrid Mode is not available, i.e. 3 consecutive orbits cannot be executed, we split visit 'Consec: Before JUNO C/A' into 2 visits with 1 and 2 orbits each. They are labeled 'Non-consec: Before Juno C/A'. This visit contains two orbits. 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 GANYMEDE-PJ STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, 1 0.1 S (0.1 34 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R, CHECKBOX=33 ------------------------------------------------------------------------------------------------------------------------------------ 2 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 1672 S 34 -MAMA G (1672 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 2489 S 34 -MAMA G (2489 S) Comments: I ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ GANYMEDE-PJ34 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A GANYMEDE-PJ34 2 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 1 N/A -MAMA G GANYMEDE-PJ34 3 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 2 N/A -MAMA G 16499( 7) - 13-May-2021 12:07:58 - [ 8] Visit: 04 (Non-consec: Before JUNO C/A) Visit Requirements: SCHED 100%; BETWEEN 07-JUN-2021:04:40:00 AND 07-JUN-2021:05:10:00; ON HOLD On Hold Comments: In case Hybrid Mode is not available, i.e., 3 consequtive orbits cannot be executed, we split visit 1 into two plus one visit labeled Non-conseq: Before Juno C/A'. This visit contains one orbit. 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 GANYMEDE-PJ STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, 1 0.1 S (0.1 SEQ 1-2 NON-INT 34 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R, CHECKBOX=33 ------------------------------------------------------------------------------------------------------------------------------------ 2 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 1672 S 34 -MAMA G (1672 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 | ------------------------------------------------------------------------------------------------------------------------------------ GANYMEDE-PJ34 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A GANYMEDE-PJ34 2 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 1 N/A -MAMA G 16499( 7) - 13-May-2021 12:07:58 - [ 9] Visit: 05 (Non-consec: After JUNO C/A) Visit Requirements: SCHED 100%; BETWEEN 07-JUN-2021:19:00:00 AND 07-JUN-2021:19:30:00; ON HOLD On Hold Comments: In case Hybrid Mode is not available, i.e., 3 consequtive orbits cannot be executed, we split visit 2 into two plus one visit labeled 'Non-conseq: After Juno C/A'. This visit contains only one orbit. 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 GANYMEDE-PJ STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, 1 0.1 S (0.1 SEQ 1-2 NON-INT 34 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R, CHECKBOX=33 ------------------------------------------------------------------------------------------------------------------------------------ 2 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 1672 S 34 -MAMA G (1672 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 | ------------------------------------------------------------------------------------------------------------------------------------ GANYMEDE-PJ34 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A GANYMEDE-PJ34 2 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 1 N/A -MAMA G 16499( 7) - 13-May-2021 12:07:58 - [ 10] Visit: 06 (Non-consec: After JUNO C/A) Visit Requirements: SCHED 100%; BETWEEN 07-JUN-2021:22:10:00 AND 07-JUN-2021:22:40:00; ON HOLD On Hold Comments: In case Hybrid Mode is not available, i.e., 3 consequtive orbits cannot be executed, we split visit 2 into two plus one visit labeled Non-conseq: After Juno C/A'. This visit contains two orbits in a row. 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 GANYMEDE-PJ STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, 1 0.1 S (0.1 34 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R, CHECKBOX=33 ------------------------------------------------------------------------------------------------------------------------------------ 2 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 1672 S 34 -MAMA G (1672 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 2489 S 34 -MAMA G (2489 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 | ------------------------------------------------------------------------------------------------------------------------------------ GANYMEDE-PJ34 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A GANYMEDE-PJ34 2 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 1 N/A -MAMA G GANYMEDE-PJ34 3 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 2 N/A -MAMA G 16499( 7) - 13-May-2021 12:07:58 - [ 11] Visit: 2A (Consec: After JUNO C/A) Visit Requirements: SCHED 100%; AFTER 02 BY 0.9 Orbits TO 1.1 Orbits; VISIBILITY INTERVAL 46 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 GANYMEDE-PJ STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, 1 0.1 S (0.1 34 DIFFUSE-CENTER=GEOMETRIC-CENTE S) R, CHECKBOX=33 ------------------------------------------------------------------------------------------------------------------------------------ 2 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 1514 S 34 -MAMA G (1514 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 GANYMEDE-PJ STIS/FUV TIME-TA 52X2D1 G140L 1425 BUFFER-TIME=500 1 2331 S 34 -MAMA G (2331 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 | ------------------------------------------------------------------------------------------------------------------------------------ GANYMEDE-PJ34 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A GANYMEDE-PJ34 2 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 1 N/A -MAMA G GANYMEDE-PJ34 3 STIS/FUV TIME-TA 52X2D1 G140L 1425 none none none none 2 N/A -MAMA G 16499( 7) - 13-May-2021 12:07:58 - [ 12] Summary Form for Proposal 16499 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.05, 52X2D1, F28X50LP ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/FUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ACQTYPE=DIFFUSE, BUFFER-TIME=500, CHECKBOX=33, DIFFUSE-CENTER=GEOMETRIC-CENTER, WAVECAL=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 02 BY 0.9 Orbits TO 1.1 Orbits, BETWEEN 07-JUN-2021:00:00:00 AND 07-JUN-2021:00:30:00, BETWEEN 07-JUN-2021:04:40:00 AND 07-JUN-2021:05:10:00, BETWEEN 07-JUN-2021:19:00:00 AND 07-JUN-2021:19:30:00, BETWEEN 07-JUN-2021:22:10:00 AND 07-JUN-2021:22:40:00, GS ACQ SCENARIO SINGLE, ON HOLD , SCHED 100%, SEQ 1-2 NON-INT, SEQ 1-4 NON-INT, SEQ 6-8 NON-INT, VISIBILITY INTERVAL 46 M ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G140L, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names GANYMEDE-PJ34, WAVE ------------------------------------------------------------------------------------------------------------------------------------