Eclipse Observations of Europa's Water Plumes

0 Assigned ID: 1565 ----- Attempting Submission 1 (Sat Sep 30 19:22:34 GMT 2017) ----- This target is not used in this proposal. 0 ----- Attempting Submission 1 (Thu Dec 14 21:30:56 GMT 2017) ----- ----- Attempting Submission 2 (Wed Jan 10 18:58:32 GMT 2018) ----- ----- Attempting Submission 3 (Tue Jan 23 18:54:13 GMT 2018) ----- ----- Attempting Submission 4 (Wed Jan 31 02:01:27 GMT 2018) ----- Your proposal could not be saved. Submission aborted. ----- Attempting Submission 5 (Thu Apr 12 16:57:31 GMT 2018) ----- ----- Attempting Submission 6 (Mon Jun 25 19:51:41 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 7 (Mon Jun 25 19:52:51 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 8 (Mon Jun 25 19:53:29 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 9 (Mon Jun 25 19:55:45 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 10 (Mon Jun 25 19:57:22 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 11 (Mon Jun 25 20:04:52 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 12 (Mon Jun 25 20:17:26 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 13 (Mon Jun 25 20:18:10 GMT 2018) ----- ----- Attempting Submission 14 (Mon Jun 25 20:18:54 GMT 2018) ----- ----- Attempting Submission 15 (Mon Jun 25 20:22:50 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 16 (Mon Jun 25 20:31:08 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 17 (Mon Jun 25 21:18:10 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 18 (Mon Jun 25 22:37:00 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 19 (Mon Jun 25 22:37:18 GMT 2018) ----- HST Phase II Proposal 15425 (APT_15425_jun26.apt) failed submission. ----- Attempting Submission 20 (Tue Jun 26 00:08:22 GMT 2018) ----- Warnings are for targets not used in program. These are alternate acquisition targets. Eclipse Observations of Europa's Water Plumes Europa's sub-surface ocean is one of the most potentially-habitable environments in our Solar System. The existence of water plumes on Europa would provide a powerful tool for studying the ocean composition and level of ongoing geological activity, providing insight into the question of habitability. However, while recent observing programs have found tentative detections of plume activity, a robust confirmation of the plumes' composition and even existence remains elusive. We propose a new approach to detecting Europa's water plumes in the visible, where strong lines and lower noise (compared to the UV) provide a greater sensitivity to tracers of water than methods used to date, allowing a robust characterization and mapping of Europa's water plumes. Our observations target Europa in eclipse by Jupiter to observe and spatially-resolve visible-wavelength emissions from atomic species excited by electron impact dissociative excitation of parent molecules. In-eclipse observations remove contamination from reflected sunlight off of Europa's disk, which would swamp line emission if observations were made in sunlight. The wavelengths targeted are chosen to cover specific species we expect to be present in Europa's atmosphere, and in particular if there is plume activity present. We will observe during ten eclipses to assess time-variability of emissions and auroral morphology, and maximize the chances for plume detection. Solar System 6 false false false false false false SUPPORTED SOLAR SYSTEM YES V-mag estimated for Europa in eclipse, at specific wavelengths where emission is present. No continuum emission is expected, and scattered light from Jupiter will be brighter than Europa's emission at most wavelengths. SATELLITE Europa (JII) STD=JUPITER STD=EUROPA NOT OCC OF EUROPA BY JUPITER FROM EARTH, SEP OF EUROPA JUPITER FROM EARTH GT 5", SEP OF EUROPA CALLISTO FROM EARTH GT 5", SEP OF EUROPA IO FROM EARTH GT 5", SEP OF EUROPA GANYMEDE FROM EARTH GT 5", ECL U FULL OF EUROPA BY JUPITER FROM EARTH EARTH SOLAR SYSTEM YES SATELLITE Io (Acquisition) STD=JUPITER STD=IO NOT OCC OF IO BY JUPITER FROM EARTH, SEP OF IO JUPITER FROM EARTH GT 10", SEP OF IO CALLISTO FROM EARTH GT 5", SEP OF IO EUROPA FROM EARTH GT 5", SEP OF IO GANYMEDE FROM EARTH GT 5", NOT ECL U FULL OF IO BY JUPITER FROM EARTH EARTH SOLAR SYSTEM YES SATELLITE Ganymede (Acquisition) STD=JUPITER STD=GANYMEDE NOT OCC OF GANYMEDE BY JUPITER FROM EARTH, SEP OF GANYMEDE JUPITER FROM EARTH GT 10", SEP OF GANYMEDE CALLISTO FROM EARTH GT 5", SEP OF GANYMEDE IO FROM EARTH GT 5", SEP OF GANYMEDE EUROPA FROM EARTH GT 5", NOT ECL U FULL OF GANYMEDE BY JUPITER FROM EARTH EARTH SOLAR SYSTEM YES SATELLITE Callisto (Acquisition) STD=JUPITER STD=CALLISTO NOT OCC OF CALLISTO BY JUPITER FROM EARTH, SEP OF CALLISTO JUPITER FROM EARTH GT 10", SEP OF CALLISTO IO FROM EARTH GT 5", SEP OF CALLISTO EUROPA FROM EARTH GT 5", SEP OF CALLISTO GANYMEDE FROM EARTH GT 5", NOT ECL U FULL OF CALLISTO BY JUPITER FROM EARTH EARTH STIS/CCD Spectroscopic No No G750M 6581 STIS/CCD Spectroscopic No No G750M 6094 POS-TARG DITHER 1.5 LINE false false 2 90.0 STIS-ALONG-SLIT 1

false

1529956177326 Using ephemeris for target 15425-01-IO Using ephemeris for target 15425-01-EUROPA The scheduling data was generated by CASM 25.2. 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For a different acquisition satellite, or for a different date, checkbox size will need to be changed accordingly. Acquisition satellite should be positioned on the slit so that Jupiter does not fall on slit. 1529956179325 Using ephemeris for target 15425-03-IO Using ephemeris for target 15425-03-EUROPA The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. /Users/kdekleer/Dropbox/Just Me/proposals/HST/HST Cycle5 Europa/phase2/OP-cache/APT_15425_jun26-v03.xml 1519882639000 279.4832026219217 (Tic-Visit :proposal-id 15425 :visit-id "03" :proposal-version -1 :trans-version "20171009" :date "25-Jun-2018 12:49:39.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 184592 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15425 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 15425 :visit-id "03" :obset-id "A3" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15425 :visit-id "03" :orbit-number 1 :pcs-time 241 :si-vis-utilization 2956 :al-overhead-at-end 0 :internal-dur-at-end 379 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3202 :pcs-gap 0 ) true 1 0 Checkbox size given for Io in Feb 2018. 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For a different acquisition satellite, or for a different date, checkbox size will need to be changed accordingly. Acquisition satellite should be positioned on the slit so that Jupiter does not fall on slit. 1529956181208 Using ephemeris for target 15425-05-IO Using ephemeris for target 15425-05-EUROPA The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. /Users/kdekleer/Dropbox/Just Me/proposals/HST/HST Cycle5 Europa/phase2/OP-cache/APT_15425_jun26-v05.xml 1520185939000 279.8527417766223 (Tic-Visit :proposal-id 15425 :visit-id "05" :proposal-version -1 :trans-version "20171009" :date "25-Jun-2018 12:49:40.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 184592 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15425 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 15425 :visit-id "05" :obset-id "A5" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15425 :visit-id "05" :orbit-number 1 :pcs-time 241 :si-vis-utilization 2868 :al-overhead-at-end 0 :internal-dur-at-end 379 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3202 :pcs-gap 0 ) true 1 0 Checkbox size given for Io in Feb 2018. For a different acquisition satellite, or for a different date, checkbox size will need to be changed accordingly. Acquisition satellite should be positioned on the slit so that Jupiter does not fall on slit. /Users/kdekleer/Dropbox/Just Me/proposals/HST/HST Cycle5 Europa/phase2/OP-cache/APT_15425_jun26-v06.xml 1529956182073 Using ephemeris for target 15425-06-GANYMEDE Using ephemeris for target 15425-06-EUROPA The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. 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Acquisition satellite should be positioned on the slit so that Jupiter does not fall on slit. /Users/kdekleer/Dropbox/Just Me/proposals/HST/HST Cycle5 Europa/phase2/OP-cache/APT_15425_jun26-v07.xml 1529956182986 Using ephemeris for target 15425-07-IO Using ephemeris for target 15425-07-EUROPA The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. 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Acquisition satellite should be positioned on the slit so that Jupiter does not fall on slit. /Users/kdekleer/Dropbox/Just Me/proposals/HST/HST Cycle5 Europa/phase2/OP-cache/APT_15425_jun26-v08.xml 1529956183892 Using ephemeris for target 15425-08-GANYMEDE Using ephemeris for target 15425-08-EUROPA The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. 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Acquisition satellite should be positioned on the slit so that Jupiter does not fall on slit. /Users/kdekleer/Dropbox/Just Me/proposals/HST/HST Cycle5 Europa/phase2/OP-cache/APT_15425_jun26-v10.xml 1529956185996 Using ephemeris for target 15425-10-GANYMEDE Using ephemeris for target 15425-10-EUROPA The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. 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Acquisition satellite should be positioned on the slit so that Jupiter does not fall on slit.