!  File:  3178C.PROP
!  Database:  PEPDB
!  Date:  18-FEB-1994:20:45:10

coverpage:

  title_1:         FAR UV OBSERVATIONS OF THE GIANT PLANETS-CYCLE1 SATURN/URANUS
    sci_cat:       SOLAR SYSTEM
    sci_subcat:    GIANT PLANETS
    proposal_for:  GTO/FOC
    cont_id:       1269
    pi_fname:      FRANCESCO
    pi_lname:      PARESCE
    pi_inst:       ESA, SPACE TELESCOPE SCIENCE INSTITUTE
    pi_country:    USA
    pi_phone:      (301) 338-4823
    keywords_1:    FAR ULTRAVIOLET, GIANT PLANETS, AURORAE
    hours_pri:     17.50
    num_pri:       104
    time_crit:     X
! end of coverpage

abstract:

    line_1:        H and H2 are the main constituents of the upper atmospheres of the giant
    line_2:        planets and Titan, H is abundant in their exospheres and magnetospheres and N2,
    line_3:        produced by photolysis of NH3, dominates the lower atmosphere of Titan. The
    line_4:        spatial distribution of these elements is determined by the photochemical and
    line_5:        particle dissociation processes responsible for their production and by the
    line_6:        transport mechanisms responsible for their distribution. The presence of these
    line_7:        planetary constituents is revealed by emissions of the HI, 1216 A Lyman alpha
    line_8:        line, the H2 Lyman and Werner, and the N2 Lyman-Birge-Hopfield bands in the
    line_9:        1000-2000A region, all produced by particle impact excitation and/or resonance
    line_10:       scattering of sunlight. Spatial and spectral images of the H, H2 and N2
    line_11:       atmospheres around these objects, consequently, represent key diagnostic tools
    line_12:       in the investigation of these fundamental planetary phenomena. Moreover, Lyman
    line_13:       alpha images of the giant planets taken at high enough spatial resolution will
    line_14:       permit a determination of the abundance of deuterium, an extremely sensitive
    line_15:       tracer of primordial nucleosynthesis. We propose to obtain a series of high
    line_16:       resolution images of the giant planets' upper atmospheres and near-planetary
    line_17:       environments in the far uv that are unobtainable from the ground or from the
    line_18:       present generation of planetary probes.

!
! end of abstract

general_form_proposers:

  lname:           GERARD
    fname:         JEAN CLAUDE
    inst:          LIEGE, UNIVERSITY OF
    country:       BELGIUM
    esa:           X

!

  lname:           VIDAL-MADJAR
    fname:         ALFRED
    inst:          INSTITUTE OF ASTROPHYSICS, PARIS
    country:       FRANCE
    esa:           X

!

  lname:           PARESCE
    fname:         FRANCESCO
    inst:          ESA, SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA
    esa:           X

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:
    line_3:        - 2.5 hours of this program charged to Caldwell.

!

  question:        13
    section:       1
    line_1:        We propose to obtain a series of high resolution images of the giant planets'
    line_2:        upper atmospheres and near-planetary environments in the far uv that are
    line_3:        unobtainable from the ground or from the present generation of planetary
    line_4:        probes. Spatial and spectral images of the H, H2 and N2 atmospheres around
    line_5:        these objects represent key diagnostic tools in the investigation of these
    line_6:        fundamental planetary phenomena. Lyman Alpha images of the giant planets taken
    line_7:        at high enough spatial resolution will permit a determination of the abundance
    line_8:        of deuterium, an extremely sensitive tracer of primordial nucleosynthesis.

!
!end of general form text

general_form_address:

  lname:           PARESCE
    fname:         FRANCESCO
    category:      PI
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    addr_1:        HOMEWOOD CAMPUS
    city:          BALTIMORE
    state:         MD
    zip:           21218
    country:       USA

!
! end of general_form_address records

! No fixed target records found

solar_system_targets:

  targnum:         1
    name_1:        URANUS
    descr_1:       PLANET URANUS
    lev1_1:        STD = URANUS,
    wind_1:        OLG OF URANUS BETWEEN 315 45
    comment_1:     URANUS MUST BE WITHIN +/- 45
    comment_2:     DEGREES OF OPPOSITION

!

  targnum:         2
    name_1:        SATURN-NUV
    descr_1:       PLANET SATURN
    lev1_1:        STD = SATURN,

!
! end of solar system targets

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      URANUS
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X512
    sp_element:    F210M,F220W
    num_exp:       2
    time_per_exp:  900S
    priority:      1
    req_1:         SEQ 1-4 NO GAP;
    req_2:         CYCLE 1 /1-5

!

    linenum:       2.000
    targname:      ^
    config:        ^
    opmode:        ^
    aperture:      ^
    sp_element:    F120M,PRISM1
    num_exp:       ^
    time_per_exp:  ^
    priority:      ^
    req_1:         POS TARG 0,-10/2-4

!

    linenum:       3.000
    targname:      ^
    config:        ^
    opmode:        ^
    aperture:      ^
    sp_element:    F140W,PRISM1
    num_exp:       ^
    time_per_exp:  ^
    priority:      ^

!

    linenum:       4.000
    targname:      URANUS
    config:        ^
    opmode:        ^
    aperture:      ^
    sp_element:    F165W,PRISM1
    num_exp:       ^
    time_per_exp:  ^
    priority:      ^

!

    linenum:       5.000
    targname:      SATURN-NUV
    config:        ^
    opmode:        ^
    aperture:      512X1024
    sp_element:    F210M,F220W
    num_exp:       2
    time_per_exp:  900S
    priority:      ^
    param_1:       PIXEL=50X25

!
! end of exposure logsheet

! No scan data records found