!  File:  5483C.PROP
!  Database:  PEPDB
!  Date:  24-FEB-1994:20:45:24

coverpage:

  title_1:         TEST OF SIMPLE GUIDESTAR HANDOFF
    sci_cat:       SOLAR SYSTEM
    sci_subcat:    MINOR PLANET
    proposal_for:  ENG/MT
    pi_title:      DR.
    pi_fname:      ALEX
    pi_mi:         D.
    pi_lname:      STORRS
    pi_inst:       STSCI
    pi_country:    USA
    pi_phone:      (410) 338-4903
    keywords_1:    ASTEROIDS, SIMPLE GUIDESTAR HANDOFF
    hours_pri:     0.75
    num_pri:       1
    wf_pc:         Y
    time_crit:     N
! end of coverpage

abstract:

    line_1:        Simple guidestar handoff (SGSH) capability was delivered as
    line_2:        part of SOGS build 32.0. This proposal will test SGSH on HST
    line_3:        by making one PC iimage of a fast-moving asteroid, doing a
    line_4:        handoff procedure, and repeating the image. Any drift in the
    line_5:        asteroid position between the two images will be compared to
    line_6:        the SOGS prediction. If the drift is greater, the SESD MOVT
    line_7:        team will attempt to determine the reason and rectify the
    line_8:        problem before operational use of this procedure.

!
! end of abstract

general_form_proposers:

  lname:           STORRS
    fname:         ALEX
    title:         PI
    mi:            D.
    inst:          STSCI
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        2
    section:       1
    line_1:        Guidestar handoff capability has been recently implemented
    line_2:        in the ground system (SOGS 32.0). This capability allows
    line_3:        observations of fast moving targets to be scheduled over
    line_4:        a series of guidestar pairs as if there was only one pair
    line_5:        that spanned the entire range of observations. This capability,
    line_6:        and future refinements allowing several apertures, will allow
    line_7:        scheduling of moving targets observations to be made in a much
    line_8:        more straighforward manner than is currently the case. This procedure
    line_9:        should be tested before routine use, however.

!

  question:        3
    section:       1
    line_1:        Acquire first pair of guidestars, make a 40s F555W PC image
    line_2:        of asteroid 3361 Orpheus. Drop to gyros, slew FGSes to next
    line_3:        pair of guidestars, perform a handoff reacq., and make
    line_4:        another 40s F555W image of the asteroid.

!

  question:        4
    section:       1
    line_1:        Only HST has the guidestar handoff capability for moving
    line_2:        targets.

!

  question:        6
    section:       1
    line_1:        No special calibration necessary.

!

  question:        9
    section:       1
    line_1:        none

!

  question:        10
    section:       1
    line_1:        Storrs' time is paid for by STScI, which also supplies him
    line_2:        with computing facilities (Sun Sparcstation IPC running
    line_3:        IRAF) for data reduction. Investigation of anomalous results
    line_4:        is part of the standard work of the Institute.

!
!end of general form text

general_form_address:

  lname:           Storrs
    fname:         Alex
    mi:            D
    title:         Dr.
    category:      PI
    inst:          Space Telescope Science Institute
    addr_1:        3700 San Martin Dr.
    city:          Baltimore
    state:         MD
    zip:           21218
    country:       USA
    phone:         (410)338-4903
    from_date:     01-SEP-93
    to_date:       15-MAY-94

!
! end of general_form_address records

! No fixed target records found

solar_system_targets:

  targnum:         1
    name_1:        3361-ORPHEUS
    descr_1:       ASTEROID 3361
    lev1_1:        STD=3361(ORPHEUS)
    fluxnum_1:     1
    fluxval_1:     V=16 +/- 1

!
! end of solar system targets

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      3361-ORPHEUS
    config:        PC
    opmode:        IMAGE
    aperture:      PCALL
    sp_element:    F555W
    num_exp:       1
    time_per_exp:  40S
    s_to_n:        10
    priority:      1
    param_1:       PRE-FLASH=YES
    req_1:         SEQ 1.0-1.1 NO GAP;
    req_2:         CYCLE 3 / 1.0-1.1;
    req_3:         GUID TOL 0.5" / 1.0-1.1;
    comment_1:     FIRST IMAGE OF ORPHEUS

!

    linenum:       1.100
    targname:      3361-ORPHEUS
    config:        PC
    opmode:        IMAGE
    aperture:      PCALL
    sp_element:    F555W
    num_exp:       1
    time_per_exp:  40S
    s_to_n:        10
    priority:      1
    param_1:       PRE-FLASH=YES
    req_1:         AFTER 1.0 BY 15M +/- 15M;
    comment_1:     SECOND IMAGE OF ORPHEUS, AFTER
    comment_2:     GUIDESTAR HANDOFF. MUST BE NEW
    comment_3:     ALIGNMENT.

!
! end of exposure logsheet

! No scan data records found