!TRANSFORMATION VERSION DEVELOP 91.0
!Converted RPS2 File /blofeld/data1/blacker/6150.new
!GENERATED 12-12-1995 10:57:14
!PROPOSAL 6150 VERSION C
!TRANSFORMED USING PROCON

! Command line parameters:
! 6150 "C" :INPUT "/blofeld/data1/blacker/" :OUTPUT "/blofeld/data1/blacker/"
! :PHASE :PROCON
!

Proposal_Information

   Title:               DETECTING THE HYDROXYL RADICAL IN THE JOVIAN MAGNETOSPHERE
   Proposal_Category:   GO
   Scientific_Category: SOLAR SYSTEM,GIANT PLANETS
   Cycle:               4


Investigators

   PI_name:             SHEMANSKY, DONALD
   PI_Institution:      UNIV. OF SOUTHERN CALIFORNIA
   CoI_Name:            Matheson, Philip L.            
   CoI_Institution:     Univ of Southern Cal
   CoI_Name:            Hu, Hongyao D.           
   CoI_Institution:     Univ of Southern Cal


Questions

   Observing_Description:
   Real_Time_Justification:
   Calibration_Justification:
   Additional_Comments: 


Abstract:               We propose to observe the Jupiter magnetosphere to determine the
                        presence and abundance of the hydroxyl radical(OH). OH has been seen
                        in the region of the icy moons of Saturn by the HST/FOS instrument
                        (GO3644-Cycle 2, August, 1992). The observed abundance implied a
                        source rate 20 times higher than predicted on the basis of ion surface
                        sputtering of H_2O. Plasma content at the orbit of Europa is greater
                        than at Saturn. Sputtering source rates of 3x10^26 mol/s are predicted,
                        or about 1/6 to 1/3 the rate inferred at Saturn's icy satellites.
                        OH may contribute a substantial fraction of OII to the outward moving
                        Io torus plasma. Our physical chemistry model predicts that for a 40%
                        contribution to local plasma density, the Europan sourced OH number
                        density may approach an average of 3 cm^-3. Assuming a path length
                        of 10 R_j, with an OH emission probability of 2.3x10^-5 s^-1 in the
                        OH A-X (0,0) band near 3085 Angstroms the intensity is 5 Rayleighs.
                        This should be observable by the HST/FOS. If the high source rate of
                        OH at Saturn is driven by micrometeoritic gardening of the satellite
                        surfaces, then the same process may be active at Europa, producing a
                        commensurately higher signal. Direct estimates of OH densities along
                        with physical chemistry modeling will provide definitive constraints
                        on possible surface erosion rates of Europa's surface.


Fixed_Targets


Solar_System_Targets

   Target_Number:       1
   Target_Name:         EURTOR
   Description:         OFFSET JUPITER
   Level_1:             STD = JUPITER, ACQ=1.5
   Level_2:             TYPE = TORUS, LONG = 90, LAT  = 0, RAD  = 6.6E+05, POLE_LAT = +90
   Level_3:             
   Window:              WND1 = 18-JAN-95 TO 31-JUN-1995 SEP OF EURTOR EUROPA FROM EARTH GT 10" SEP OF EURTOR IO FROM EARTH GT 10" SEP OF EURTOR CALLISTO FROM EARTH GT 10" SEP OF EURTOR GANYMEDE FROM EARTH GT 10"
   Flux:                
   Comments:            ESTIMATED BAND BRIGHTNESS 5 RAYLEIGHS
                        CONTINUUM IS SKY BACKGROUND
                        NO SATELLITES IN FIELD OF VIEW
                        SEP OF LOS EUROPA FROM EARTH GT 10
                        SEP OF LOS IO FROM EARTH GT 10
                        SEP OF LOS CALLISTO FROM EARTH GT 10
                        SEP OF LOS GANYMEDE FROM EARTH GT 10


Generic_Targets


Scan_Data


Visits

Visit_Number:           01
Visit_Requirements:     GUID TOL 0.0000556D
On_Hold_Comments:       

   ! From Line 1
   Exposure_number:     10
   Target_Name:         EURTOR
   Config:              FOS/RD
   Opmode:              ACCUM
   Aperture:            4.3
   Sp_Element:          G270H
   Wavelength:          3090.0
   Optional_Parameters: STEP-TIME=0.25, STEP-PATT=SINGLE
   Number_of_iterations:1
   Time_Per_Exposure:   250M
   Special_Requirements:
   Comments:            SINGLE GUIDE STAR OK
                        BLIND POINTING ACQUISITION.
                        MERGE TO PRODUCE 2 APPROX
                        EQUAL LENGTH ALIGNMENTS
                        PER ORBIT.
                        EXPAND TO FILL 7 ORBITS.

Visit_Number:           02
Visit_Requirements:     GUID TOL 0.0000556D
On_Hold_Comments:       

   ! From Line 1
   Exposure_number:     10
   Target_Name:         EURTOR
   Config:              FOS/RD
   Opmode:              ACCUM
   Aperture:            4.3
   Sp_Element:          G270H
   Wavelength:          3090.0
   Optional_Parameters: STEP-TIME=0.25, STEP-PATT=SINGLE
   Number_of_iterations:1
   Time_Per_Exposure:   45M
   Special_Requirements:
   Comments:            SINGLE GUIDE STAR OK
                        BLIND POINTING ACQUISITION.
                        MERGE TO PRODUCE 2 APPROX
                        EQUAL LENGTH ALIGNMENTS
                        PER ORBIT.


Data_Distribution

   Medium:              8MM
   Blocking_Factor:     10
   Ship_To:             PI_Address
   Ship_Via:            UPS
   Recipient_Email: