Revised level 3 target specifications1940352674----- Attempting Submission 5 (Thu Jan 02 19:06:17 GMT 2014) -----
----- Attempting Submission 6 (Fri Jan 03 15:54:06 GMT 2014) -----This is a resubmission. Warnings explained in previous submissions.Probing the atmosphere of a transiting ocean worldWe propose to image the atmosphere of Europa against the smooth FUV and NUV background of Jupiter to reveal or constrain its structure, scale height and composition. Molecules are liberated from the surface by a combination of sputtering and erosion associated with impacting magnetospheric ions, micrometeroids, sublimation from sunlight and, potentially, cryogenic volcanism. In detail, the relationships between the atmosphere, exosphere and surface are not understood. The clumpy FUV OI emission implies a patchy, irregular exosphere, suggestive of localized sources and strong atmospheric density variations. If the internal heat sources and surface cracking are sufficient to release outgassing plumes, as for Enceladus, we have an excellent chance of detecting them. By using the STIS FUV MAMA TIME-TAG imaging: Jupiter is smooth, detector features are removed, and we can crisply image, post-facto, any and all targets in the field individually, including Europa, its shadow and features on Jupiter. The spatial resolution is highest in the FUV and cross-sections of relevant molecules are high. An intriguing archival image demonstrates the power of this approach. An additional observation in the NUV using conventional CCD imaging will provide sensitive limits on dusty particulates above the surface, potentially entrained by outflowing gas.We will obtain three observations of Europa transiting the face of Jupiter. Two use TIME-TAG STIS FUV imaging and one uses blue WFC3 imaging. We avoid three days near opposition where the shadow of Europa would interfere with the transit, and desire a sun-target-observer angle <4.5deg if possible. We also desire the transit to be across the center of the planet.SOLAR SYSTEM0falsetrue0.0falsefalsefalseSUPPORTEDSOLAR SYSTEMSATELLITESatellite EuropaSTD=JUPITERSTD=EUROPATYPE=POS_ANGLE,RAD=6.0,ANG=180.0,REF=NORTH,R_RAD=-8.5,R_ANG=0,EPOCH=19-JAN-2014:16:30:26,EpochTimeScale=UTCTRANSIT OF EUROPA ACROSS JUPITER FROM EARTH,
SEP OF EUROPA JUPITER FROM EARTH LT -10"EARTHSOLAR SYSTEMSATELLITESatellite EuropaSTD=JUPITERSTD=EUROPATYPE=POS_ANGLE,RAD=6.0,ANG=180,REF=NORTH,R_RAD=-8.5,R_ANG=0,EPOCH=26-JAN-2014:18:12:18,EpochTimeScale=UTCTRANSIT OF EUROPA ACROSS JUPITER FROM EARTH,
SEP OF EUROPA JUPITER FROM EARTH LT -10"EARTHSOLAR SYSTEMSATELLITESatellite EuropaSTD=JUPITERSTD=EUROPATYPE=POS_ANGLE,RAD=0,ANG=90,REF=NORTH,R_RAD=-138,R_ANG=0,EPOCH=22-DEC-2013:07:07:30,EpochTimeScale=UTCTRANSIT OF EUROPA ACROSS JUPITER FROM EARTH,
SEP OF EUROPA JUPITER FROM EARTH LT -10"EARTHSOLAR SYSTEMSATELLITESatellite EuropaSTD=JUPITERSTD=EUROPATRANSIT OF EUROPA ACROSS JUPITER FROM EARTH,
SEP OF EUROPA JUPITER FROM EARTH LT -10"EARTHSTIS/FUV-MAMAImagingNoNoF25SRF2WFC3/UVISImagingNoNoF275WWFC3/UVISImagingNoNoF225WUsing ephemeris for target 13438-01-EUROPA-TRANSITephemeris data for target 13438-01-EUROPA-TRANSIT does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 13.326 to 15.092. ephemeris interval: 13.365 to 16.001The scheduling data was generated by CASM 21.2.CASM was run in Phase II mode.Time constraints are so that Sun-Target-Observer angle is in range 4.5 deg to 0.6 deg (latter to avoid shadow behind target)
Additional time constraint to select single visit matched to EPOCH in level 3 target specification.
Execute two of visists 1, 2, 3(Tic-Visit
:proposal-id 13438
:visit-id "01"
:proposal-version -1
:trans-version "20130722"
:date "02-Jan-2014 14:02:16.0"
: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 1809136
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13438
:visit-id "01"
:obset-id "01"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 13438
:visit-id "01"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2682
:al-overhead-at-end 0
:internal-dur-at-end 440
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3015
:pcs-gap 0
)false10Using ephemeris for target 13438-02-EUROPA2ephemeris data for target 13438-02-EUROPA2 does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 13.326 to 15.092. ephemeris interval: 13.365 to 16.001The scheduling data was generated by CASM 21.2.CASM was run in Phase II mode./private/var/folders/h2/_3b1kkv56nn2rfp1zrxtm0sc0006z1/T/OPVisit6143848285558047178.xmlTime constraints are so that Sun-Target-Observer angle is in range 4.5 deg to 0.6 deg (latter to avoid shadow behind target)
Further constrained to match EPOCH in Level 3 target specification.
Execute two of visists 1, 2, 3(Tic-Visit
:proposal-id 13438
:visit-id "02"
:proposal-version -1
:trans-version "20131031"
:date "03-Jan-2014 10:50:38.0"
: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 1809136
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13438
:visit-id "02"
:obset-id "02"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 13438
:visit-id "02"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2682
:al-overhead-at-end 0
:internal-dur-at-end 440
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3015
:pcs-gap 0
)true10Using ephemeris for target 13438-03-EUROPA3ephemeris data for target 13438-03-EUROPA3 does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 13.326 to 15.092. ephemeris interval: 13.365 to 16.001The scheduling data was generated by CASM 21.2.CASM was run in Phase II mode.Time constraints are so that Sun-Target-Observer angle is in range 4.5 deg to 0.6 deg (latter to avoid shadow behind target)
Further constrained to match Level 3 target specification EPOCH
Execute two of visists 1, 2, 31387695537000268.6996048093272(Tic-Visit
:proposal-id 13438
:visit-id "03"
:proposal-version -1
:trans-version "20130722"
:date "02-Jan-2014 14:02:22.0"
: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 1809136
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13438
:visit-id "03"
:obset-id "03"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 13438
:visit-id "03"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2682
:al-overhead-at-end 0
:internal-dur-at-end 440
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3015
:pcs-gap 0
)false10Using ephemeris for target 13438-04-EUROPA-TRANSIT-WFC3ephemeris data for target 13438-04-EUROPA-TRANSIT-WFC3 does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 13.326 to 15.092. ephemeris interval: 13.365 to 16.001The scheduling data was generated by CASM 21.2.CASM was run in Phase II mode.Time constraints are so that Sun-Target-Observer angle is in range 4.5 deg to 0.6 deg (latter to avoid shadow behind target)1388309515000276.24135986283864(Tic-Visit
:proposal-id 13438
:visit-id "04"
:proposal-version -1
:trans-version "20130722"
:date "02-Jan-2014 14:02:26.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 703888
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 13438
:visit-id "04"
:obset-id "04"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 13438
:visit-id "04"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2727
:al-overhead-at-end 0
:internal-dur-at-end 652
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3069
:pcs-gap 0
)false10