11085( 14) - 04/26/07 12:00 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 11085 Version: 14 Check-in Time: 26-Apr-2007 15:59:57 STScI Edit Number: 12 Title Europa in Eclipse: Tenuous Atmosphere, Electromagnetic Activity and Surface Luminescence ------------------------------------------------------------------------------------ Type Cycle Parallel Pointing Tolerance GO/DD 15 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. William B. Sparks Space Telescope Science Institute CoI: Prof. Holland Ford The Johns Hopkins University N CoI: Dr. Paul Geissler U.S. Geological Survey N CoI: Prof. Jim Hough University of Hertfordshire N CoI: Prof. Edwin L. Turner Princeton University N CoI: Prof. Christopher Chyba Princeton University N CoI: Mr. Kevin Hand Stanford University N CoI: Dr. Robert Carlson Jet Propulsion Laboratory N CoI: Dr. Margaret Turnbull Space Telescope Science Institute N CoI: Dr. Melissa A. McGrath NASA Marshall Space Flight Center N ------------------------------------------------------------------------------------ Abstract We propose to image Europa during its orbital eclipse by Jupiter. This will form the basis of an investigation into the nature of the tenuous atmosphere, electromagnetic environment and surface material of Europa. We will compare the FUV oxygen line at 1356A to the optical line at 6300A and seek optical auroral hydrogen emission in Halpha. With broad continuum filters, we will search for optical emissions from other atmospheric constituents and for fluorescence of the surface material, arising from the very high level of incident energetic particle radiation. The high spatial resolution of ACS will allow us to fully resolve scales of interest and allow us to distinguish easily the different terrains on Europa's surface. In particular we wish to compare luminesence in regions dominated by ice to those of potentially organic red material. ------------------------------------------------------------------------------------ 11085( 14) - 04/26/07 12:00 - [ 2] Observations Description ------------------------ We will obtain a single ACS/SBC prism observation inside and outside eclipse. We will obtain one orbit that sweeps through all filters outside eclipse and the remaining four orbits will be inside eclipse. Three use broad filters and one uses the narrow band optical filters to seek auroral emission. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 11085( 14) - 04/26/07 12:00 - [ 3] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 | TARGET NAME: EUROPA ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Jovian Moon ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 | TARGET POSITION LEVEL 2 | STD=JUPITER | STD=EUROPA | ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 | WINDOWS | | NOT ECL U OF EUROPA BY JUPITER, OLG OF | EUROPA BETWEEN 330.0 360.0 | ------------------------------------------------------------------------------------------------------------------------------------ DATA | COMMENTS | V = 5.9+/-0.1 | | ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 2 | TARGET NAME: EUROPA-ECLIPSE ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Jovian Moon ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 | TARGET POSITION LEVEL 2 | STD=JUPITER | STD=EUROPA | ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 | WINDOWS | | ECL U OF EUROPA-ECLIPSE BY JUPITER, SEP | OF EUROPA JUPITER FROM EARTH GT 3.0" | ------------------------------------------------------------------------------------------------------------------------------------ DATA | COMMENTS | V = 19.7 | | ------------------------------------------------------------------------------------------------------------------------------------ 11085( 14) - 04/26/07 12:00 - [ 4] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 3 | TARGET NAME: EUROPA-ECLIPSE-2 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: SATELLITE Jovian Moon ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 | TARGET POSITION LEVEL 2 | STD=JUPITER | STD=EUROPA | ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 | WINDOWS | | ECL U OF EUROPA-ECLIPSE BY JUPITER, SEP | OF EUROPA JUPITER FROM EARTH GT 2.0" | ------------------------------------------------------------------------------------------------------------------------------------ DATA | COMMENTS | V = 19.7 | | ------------------------------------------------------------------------------------------------------------------------------------ 11085( 14) - 04/26/07 12:00 - [ 5] Visit: 01 Visit Priority: Visit Requirements: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA WFPC2 IMAGE PC1-FIX F300W CLOCKS=YES,ATD-GAIN=15 2 10 S POS TARG -11.4,-11.2 ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA WFPC2 IMAGE PC1-FIX F380W CLOCKS=YES,ATD-GAIN=15 2 1.2 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 3 EUROPA WFPC2 IMAGE PC1-FIX F555W ATD-GAIN=15 2 0.11 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 4 EUROPA WFPC2 IMAGE PC1-FIX F675W ATD-GAIN=15 2 0.11 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 5 EUROPA WFPC2 IMAGE PC1-FIX F814W ATD-GAIN=15 2 0.2 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 6 EUROPA WFPC2 IMAGE PC1-FIX F631N CLOCKS=YES,ATD-GAIN=15 2 5 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 7 EUROPA WFPC2 IMAGE PC1-FIX F656N CLOCKS=YES,ATD-GAIN=15 2 8 S SAME POS AS 1 ------------------------------------------------------------------------------------------------------------------------------------ 8 EUROPA WFPC2 IMAGE PC1-FIX F255W CLOCKS=YES,CR-SPLIT=DEF, 1 500 S SAME POS AS 1 ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA 1 WFPC2 IMAGE PC1-FIX F300W none none 1 none 1 N/A EUROPA 1 WFPC2 IMAGE PC1-FIX F300W none none 2 none 1 N/A EUROPA 2 WFPC2 IMAGE PC1-FIX F380W none none 1 none 1 N/A EUROPA 2 WFPC2 IMAGE PC1-FIX F380W none none 2 none 1 N/A EUROPA 3 WFPC2 IMAGE PC1-FIX F555W none none 1 none 1 N/A EUROPA 3 WFPC2 IMAGE PC1-FIX F555W none none 2 none 1 N/A EUROPA 4 WFPC2 IMAGE PC1-FIX F675W none none 1 none 1 N/A EUROPA 4 WFPC2 IMAGE PC1-FIX F675W none none 2 none 1 N/A EUROPA 5 WFPC2 IMAGE PC1-FIX F814W none none 1 none 1 N/A EUROPA 5 WFPC2 IMAGE PC1-FIX F814W none none 2 none 1 N/A EUROPA 6 WFPC2 IMAGE PC1-FIX F631N none none 1 none 1 N/A EUROPA 6 WFPC2 IMAGE PC1-FIX F631N none none 2 none 1 N/A EUROPA 7 WFPC2 IMAGE PC1-FIX F656N none none 1 none 1 N/A EUROPA 7 WFPC2 IMAGE PC1-FIX F656N none none 2 none 1 N/A EUROPA 8 WFPC2 IMAGE PC1-FIX F255W none none none none 1 N/A 11085( 14) - 04/26/07 12:00 - [ 6] Visit: 02 Visit Priority: Visit Requirements: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F555W CLOCKS=YES,CR-SPLIT=DEF, 1 300 S POS TARG -11.4,-11.2 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F675W CLOCKS=YES,CR-SPLIT=DEF, 1 260 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 3 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F380W CLOCKS=YES,CR-SPLIT=DEF, 1 400 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 4 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F300W CLOCKS=YES,CR-SPLIT=DEF, 1 400 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 5 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F814W CLOCKS=YES,CR-SPLIT=0.5, 1 400 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ECLIPSE 1 WFPC2 IMAGE PC1-FIX F555W none none none none 1 N/A EUROPA-ECLIPSE 2 WFPC2 IMAGE PC1-FIX F675W none none none none 1 N/A EUROPA-ECLIPSE 3 WFPC2 IMAGE PC1-FIX F380W none none none none 1 N/A EUROPA-ECLIPSE 4 WFPC2 IMAGE PC1-FIX F300W none none none none 1 N/A EUROPA-ECLIPSE 5 WFPC2 IMAGE PC1-FIX F814W none none none 1 1 N/A EUROPA-ECLIPSE 5 WFPC2 IMAGE PC1-FIX F814W none none none 2 2 N/A 11085( 14) - 04/26/07 12:00 - [ 7] Visit: 03 Visit Priority: Visit Requirements: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F380W CLOCKS=YES,CR-SPLIT=DEF, 1 600 S POS TARG -11.4,-11.2 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F606W CLOCKS=YES,CR-SPLIT=DEF, 1 600 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 3 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F814W CLOCKS=YES,CR-SPLIT=DEF, 1 600 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ECLIPSE 1 WFPC2 IMAGE PC1-FIX F380W none none none none 1 N/A EUROPA-ECLIPSE 2 WFPC2 IMAGE PC1-FIX F606W none none none none 1 N/A EUROPA-ECLIPSE 3 WFPC2 IMAGE PC1-FIX F814W none none none none 1 N/A 11085( 14) - 04/26/07 12:00 - [ 8] Visit: 04 Visit Priority: Visit Requirements: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F656N CLOCKS=YES,CR-SPLIT=DEF, 1 800 S POS TARG -11.4,-11.2; PSE-2 ATD-GAIN=15 SAME ALIGNMENT 1-3 ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F675W CLOCKS=YES,CR-SPLIT=0.5, 1 320 S SAME POS AS 1 PSE-2 ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 3 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F631N CLOCKS=YES,CR-SPLIT=DEF, 1 800 S SAME POS AS 1 PSE-2 ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ECLIPSE-2 1 WFPC2 IMAGE PC1-FIX F656N none none none 1 1 N/A EUROPA-ECLIPSE-2 1 WFPC2 IMAGE PC1-FIX F656N none none none 2 1 N/A EUROPA-ECLIPSE-2 2 WFPC2 IMAGE PC1-FIX F675W none none none 1 1 N/A EUROPA-ECLIPSE-2 2 WFPC2 IMAGE PC1-FIX F675W none none none 2 1 N/A EUROPA-ECLIPSE-2 3 WFPC2 IMAGE PC1-FIX F631N none none none 1 1 N/A EUROPA-ECLIPSE-2 3 WFPC2 IMAGE PC1-FIX F631N none none none 2 1 N/A 11085( 14) - 04/26/07 12:00 - [ 9] Visit: 05 Visit Priority: Visit Requirements: GROUP 05, 06 WITHIN 15.0H 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA ACS/SBC ACCUM SBC PR130L 2 1300 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 | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA 1 ACS/SBC ACCUM SBC PR130L none none 1 none 1 N/A EUROPA 1 ACS/SBC ACCUM SBC PR130L none none 2 none 1 N/A 11085( 14) - 04/26/07 12:00 - [ 10] Visit: 06 Visit Priority: Visit Requirements: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ECLI ACS/SBC ACCUM SBC PR130L 2 1300 S PSE ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ECLIPSE 1 ACS/SBC ACCUM SBC PR130L none none 1 none 1 N/A EUROPA-ECLIPSE 1 ACS/SBC ACCUM SBC PR130L none none 2 none 1 N/A 11085( 14) - 04/26/07 12:00 - [ 11] Visit: 07 Visit Priority: Visit Requirements: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F300W CLOCKS=YES,CR-SPLIT=DEF, 1 600 S POS TARG -11.4,-11.2 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 2 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F675W CLOCKS=YES,CR-SPLIT=DEF, 1 260 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 3 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F555W CLOCKS=YES,CR-SPLIT=DEF, 1 300 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 4 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F380W CLOCKS=YES,CR-SPLIT=DEF, 1 400 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 5 EUROPA-ECLI WFPC2 IMAGE PC1-FIX F814W CLOCKS=YES,CR-SPLIT=DEF, 1 400 S SAME POS AS 1 PSE ATD-GAIN=15 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ EUROPA-ECLIPSE 1 WFPC2 IMAGE PC1-FIX F300W none none none none 1 N/A EUROPA-ECLIPSE 2 WFPC2 IMAGE PC1-FIX F675W none none none none 1 N/A EUROPA-ECLIPSE 3 WFPC2 IMAGE PC1-FIX F555W none none none none 1 N/A EUROPA-ECLIPSE 4 WFPC2 IMAGE PC1-FIX F380W none none none none 1 N/A EUROPA-ECLIPSE 5 WFPC2 IMAGE PC1-FIX F814W none none none none 1 N/A 11085( 14) - 04/26/07 12:00 - [ 12] Summary Form for Proposal 11085 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PC1-FIX SBC ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFPC2 ACS/SBC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CLOCKS=YES ATD-GAIN=15 CR-SPLIT=DEF CR-SPLIT=0.5 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements POS TARG -11.4,-11.2; SAME POS AS 1; SAME ALIGNMENT 1-3; GROUP 05, 06 WITHIN 15.0H; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F300W F380W F555W F675W F814W F631N F656N F255W F606W PR130L ------------------------------------------------------------------------------------------------------------------------------------ Target Names EUROPA EUROPA-ECLIPSE EUROPA-ECLIPSE-2 ------------------------------------------------------------------------------------------------------------------------------------