!  File:  4442C.PROP
!  Database:  PEPDB
!  Date:  22-FEB-1994:12:08:55

coverpage:

  title_1:         OPPORTUNITY OCCULTATIONS BY SMALL BODIES - SPLIT
    sci_cat:       SOLAR SYSTEM
    proposal_for:  GTO/HSP
    targ_of_opp:   Y
    cont_id:       4015
    pi_fname:      ROBERT
    pi_mi:         C.
    pi_lname:      BLESS
    pi_inst:       WISCONSIN, UNIVERSITY OF
    pi_country:    USA
    pi_phone:      (608)262-1715
    keywords_1:    COMET, ASTEROID, SATELLITE, PLUTO, OCCULTATION
    hours_pri:     17.69
    num_pri:       7
    realtime:      X
    time_crit:     Y
! end of coverpage

abstract:

    line_1:        Although an occultation by any specific comet,
    line_2:        asteroid, satellite, or Pluto is unlikely to be
    line_3:        observable from the ST, the scientific return from
    line_4:        such an event would be great because of the superior
    line_5:        signal-to-noise ratio achievable with the ST for
    line_6:        occultation observations. We propose to observe
    line_7:        occultations by these bodies with the ST, as the
    line_8:        opportunites arise, to probe their atmospheres,
    line_9:        determine their sizes and achieve other goals. With
    line_10:       such diverse possibilities, one must examine each
    line_11:       opportunity as it occurs and formulate an observing
    line_12:       strategy to fit that particular case.  Revision
    line_13:       History: Received on RPS 9/1/89;   Added to SCCS
    line_14:       9/5/89 Updated to V2 proposal instructions; - SALM
    line_15:       9/5/89 Updated to pass RPSS;  asb@MIT 7May90; Small
    line_16:       logic errors fixed--BJW 7/9/90; Changed SP. SCAN to
    line_17:       SP. SCAN SING.-EXP--BJW 7/10/90; Changes in
    line_18:       observations/ targets--amanda; Split proposal by
    line_19:       cycle--BJW 4/24/91; Updated target list-- BJW
    line_20:       8/1/91; Updated target list--asb 3/18/92;

!
! end of abstract

general_form_proposers:

  lname:           ROBINSON
    fname:         EDWARD
    mi:            L.
    inst:          TEXAS, UNIVERSITY OF
    country:       USA

!

  lname:           BLESS
    fname:         ROBERT
    mi:            C.
    inst:          WISCONSIN, UNIVERSITY OF
    country:       USA

!

  lname:           VAN CITTERS
    fname:         G.
    mi:            W.
    inst:          NATIONAL SCIENCE FOUNDATION
    country:       USA

!

  lname:           DOLAN
    fname:         JOSEPH
    mi:            F.
    inst:          NASA, GODDARD SPACE FLIGHT CENTER
    country:       USA

!

  lname:           WHITE
    fname:         RICHARD
    mi:            L.
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA

!

  lname:           ELLIOT
    fname:         JAMES
    mi:            L.
    inst:          MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        We plan to identify those occultations of sufficient
    line_2:        signal-to-noise ratio to achieve the goals outlined
    line_3:        in Section 2. Each observation will require (i) a
    line_4:        set of 2 onboard acquisitions; (ii) a scan of about
    line_5:        twenty arc-seconds along the track that the object
    line_6:        will follow relative to the occulting body and (iii)
    line_7:        a time series run on the object with whatever filter
    line_8:        aperture combination that is chosen for the
    line_9:        observation. For some occultations to be observed in
    line_10:       the far UV, prior multi-filter photometry of the
    line_11:       object will be necessary in order to determine the
    line_12:       most appropriate filter to use for the occultation.
    line_13:       For now, we shall assume that the calibration and
    line_14:       observation time will average about 30 minutes per
    line_15:       occultation observed.

!

  question:        4
    section:       1
    line_1:        We can achieve a much better signal-to-noise ratio
    line_2:        for the temperature profiles and other information
    line_3:        than can be obtained for small body occultations
    line_4:        than has been possible from the ground for the
    line_5:        following reasons: (i) the greatly improved
    line_6:        photometric stability of ST photometry, which will
    line_7:        substantially reduce the errors in the numerical
    line_8:        inversion of the data that is necessary to obtain
    line_9:        the temperature profiles; (ii) our ability to reject
    line_10:       background light from the occulting object (such as
    line_11:       a comet ) by employing small focal plane apertures;
    line_12:       and (iii) the absence of scintillation noise, which
    line_13:       has strong components at frequencies comparable to
    line_14:       the occultation timescale.

!

  question:        5
    section:       1
    line_1:        For resolved bodies with possible atmospheres,
    line_2:        tracking the occulted star will require a real time
    line_3:        update, due to its complicated path caused by
    line_4:        refraction in the occulting body's atmosphere and
    line_5:        the uncertainties in predicting the ST orbit.

!

  question:        6
    section:       1
    line_1:        For comets and the larger bodies (Titan, Triton, and
    line_2:        Pluto) a prior scan over 20 arc-seconds is needed to
    line_3:        map the scattered light field, which is needed for
    line_4:        the data reduction.

!

  question:        7
    section:       1
    line_1:        Data will be reduced and analyzed at MIT with VAX
    line_2:        11-750 belonging to the planetary astronomy group.

!

  question:        10
    section:       1
    line_1:        TBD

!

  question:        13
    section:       1
    line_1:        An observation of an occultation by a comet,
    line_2:        asteroid, satellite, or Pluto would yield a variety
    line_3:        of information. For example, we could gain further
    line_4:        information about the atmospheres of Pluto and
    line_5:        Triton, including knowledge of the composition and
    line_6:        structure of their atmospheres.  Also, the presence
    line_7:        of possible material in the neighborhood of an
    line_8:        asteroid could be obtained. Opportunity stellar
    line_9:        occultations by small bodies are proposed to be
    line_10:       observed with the HSP or FOS.

!
!end of general form text

general_form_address:

  lname:           BLESS
    fname:         ROBERT
    mi:            C.
    category:      PI
    inst:          WISCONSIN, UNIVERSITY OF
    addr_1:        DEPARTMENT OF ASTRONOMY
    addr_2:        475 NORTH CHARTER STREET
    city:          MADISON
    state:         WI
    zip:           53706
    country:       USA
    phone:         608-262-1715

!
! end of general_form_address records

fixed_targets:

    targnum:       16
    name_1:        TR32
    name_2:        STAR-191026-214411
    descr_1:       TAR TO BE OCCULTED BY TRITON.
    descr_2:       CLOSE APPROACH AT 10-OCT-92:19:29
    pos_1:         RA = 19H 10M 26.239S +/- 0.03",
    pos_2:         DEC = -21D 44' 10.24" +/- 0.03",
    equinox:       J2000
    acqpr_1:       BKG
    comment_1:     STAR POSITION WILL BE UPDATED
    comment_2:     BEFORE OBSERVATION IS PERFORMED.
    comment_3:     CONTACT:  AMANDA S. BOSH, MIT
    comment_4:     SOLAR ELONG 88D
    fluxnum_1:     1
    fluxval_1:     R = 14.2 +/- 0.5

!

    targnum:       17
    name_1:        TR32-OFFSET
    name_2:        GSC6295-02114
    descr_1:       OFFSET TARGET FOR TR32
    pos_1:         PLATE-ID = 068E,
    pos_2:         RA = 19H 10M 31.446S +/- 0.03",
    pos_3:         DEC = -21D 44' 24.40" +/- 0.06",
    equinox:       J2000
    comment_1:     STAR POSITION WILL BE UPDATED
    comment_2:     BEFORE OBSERVATION IS PERFORMED.
    comment_3:     CONTACT:  AMANDA S. BOSH, MIT
    fluxnum_1:     1
    fluxval_1:     B = 12.84 +/- 0.59

!

    targnum:       18
    name_1:        TR46
    name_2:        GSC6310-02742
    descr_1:       STAR TO BE OCCULTED BY TRITON.
    descr_2:       CLOSE APPROACH AT 13-MAY-93:06:51
    pos_1:         PLATE-ID = 0104,
    pos_2:         RA = 19H 30M 55.118S +/- 0.5",
    pos_3:         DEC = -21D 06' 23.98" +/- 0.5",
    equinox:       J2000
    acqpr_1:       BKG
    comment_1:     STAR POSITION WILL BE UPDATED
    comment_2:     BEFORE OBSERVATION IS PERFORMED.
    comment_3:     CONTACT:  AMANDA S. BOSH, MIT
    comment_4:     SOLAR ELONG 121
    fluxnum_1:     1
    fluxval_1:     R = 13.4 +/- 0.5

!

    targnum:       19
    name_1:        TR46-OFFSET
    name_2:        GSC6310-01521
    descr_1:       OFFSET TARGET FOR TR46
    pos_1:         PLATE-ID = 0104,
    pos_2:         RA = 19H 30M 52.939S +/- 0.5",
    pos_3:         DEC = -21D 06' 04.97" +/- 0.5",
    equinox:       J2000
    comment_1:     STAR POSITION WILL BE UPDATED
    comment_2:     BEFORE OBSERVATION IS PERFORMED.
    comment_3:     CONTACT:  AMANDA S. BOSH, MIT
    fluxnum_1:     1
    fluxval_1:     B = 14.62 +/- 0.60

!

    targnum:       22
    name_1:        P19.04
    name_2:        STAR-154600-50819
    descr_1:       STAR TO BE OCCULTED BY PLUTO.
    descr_2:       CLOSE APPROACH AT 1-FEB-93:11:47
    pos_1:         RA = 15H 46M 00.355S +/- 0.5",
    pos_2:         DEC = -5D 08' 19.01" +/- 0.5",
    equinox:       J2000
    acqpr_1:       BKG
    comment_1:     STAR POSITION WILL BE UPDATED
    comment_2:     BEFORE OBSERVATION IS PERFORMED.
    comment_3:     CONTACT:  AMANDA S. BOSH, MIT
    comment_4:     SOLAR ELONG 78
    fluxnum_1:     1
    fluxval_1:     R = 14.6 +/- 0.5

!

    targnum:       23
    name_1:        P19.04-OFFSET
    name_2:        STAR-154556-50848
    descr_1:       OFFSET TARGET FOR P19.04
    pos_1:         RA = 15H 45M 55.591S +/- 0.5",
    pos_2:         DEC = -5D 08' 47.75" +/- 0.5",
    equinox:       J2000
    comment_1:     STAR POSITION WILL BE UPDATED
    comment_2:     BEFORE OBSERVATION IS PERFORMED.
    comment_3:     CONTACT:  AMANDA S. BOSH, MIT
    fluxnum_1:     1
    fluxval_1:     R = 15.9 +/- 0.5

!
! end of fixed targets

solar_system_targets:

  targnum:         30
    name_1:        TR32-BACKGROUND
    descr_1:       OFFSET TRITON
    lev1_1:        STD = TRITON
    lev2_1:        TYPE = POS_ANGLE,
    lev2_2:        RAD = 28,
    lev2_3:        ANG = 77,
    lev2_4:        REF = NORTH
    comment_1:     FOR USE IN A SCAN OF
    comment_2:     BACKGROUND LEVELS ALONG
    comment_3:     THE PATH OF THE OCCULTED STAR

!

  targnum:         31
    name_1:        TR46-BACKGROUND
    descr_1:       OFFSET TRITON
    lev1_1:        STD = TRITON
    lev2_1:        TYPE = POS_ANGLE,
    lev2_2:        RAD = 28,
    lev2_3:        ANG = 75,
    lev2_4:        REF = NORTH
    comment_1:     FOR USE IN A SCAN OF
    comment_2:     BACKGROUND LEVELS ALONG
    comment_3:     THE PATH OF THE OCCULTED STAR

!

  targnum:         34
    name_1:        P19.04-BACKGROUND
    descr_1:       OFFSET PLUTO
    lev1_1:        STD = PLUTO
    lev2_1:        TYPE = POS_ANGLE,
    lev2_2:        RAD = 28,
    lev2_3:        ANG = 77,
    lev2_4:        REF = NORTH
    comment_1:     FOR USE IN A SCAN OF
    comment_2:     BACKGROUND LEVELS ALONG
    comment_3:     THE PATH OF THE OCCULTED STAR

!

  targnum:         35
    name_1:        TRITON-CENTER
    descr_1:       SATELLITE TRITON
    lev1_1:        STD = TRITON, ACQ = 0.1
    comment_1:     ACQUISITION TARGET FOR
    comment_2:     BACKGROUND SCANS
    fluxnum_1:     1
    fluxval_1:     V = 13.6 +/- 0.5

!

  targnum:         36
    name_1:        PLUTO-CENTER
    descr_1:       PLANET PLUTO
    lev1_1:        STD = PLUTO, ACQ = 0.1
    comment_1:     ACQUISITION TARGET FOR
    comment_2:     BACKGROUND SCANS
    fluxnum_1:     1
    fluxval_1:     V = 13.6 +/- 0.5

!
! end of solar system targets

! No generic target records found

exposure_logsheet:

    linenum:       4.000
    sequence_1:    DEFINE
    sequence_2:    ONBRD-ACQ
    targname:      #
    config:        HSP/VIS
    opmode:        ACQ
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1

!

    linenum:       5.000
    sequence_1:    DEFINE
    sequence_2:    ONBRD-ACQF
    targname:      #
    config:        HSP/VIS
    opmode:        ACQ
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    req_1:         PCS MODE F;

!

    linenum:       6.000
    sequence_1:    DEFINE
    sequence_2:    BACK-SCAN
    targname:      #
    config:        HSP/PMT/VIS
    opmode:        SPLIT
    aperture:      1.0
    sp_element:    F750W/F320N
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    param_1:       #
    req_1:         SPATIAL SCAN;

!

    linenum:       7.000
    sequence_1:    DEFINE
    sequence_2:    RING-OCC
    targname:      #
    config:        HSP/PMT/VIS
    opmode:        SPLIT
    aperture:      1.0
    sp_element:    F750W/F320N
    num_exp:       1
    time_per_exp:  1M
    fluxnum_1:     1
    priority:      1
    param_1:       #
    req_1:         CRIT OBS;
    req_2:         PCS MODE F;

!

    linenum:       40.000
    sequence_1:    USE
    sequence_2:    ONBRD-ACQ
    targname:      TRITON-CENTER
    time_per_exp:  X40
    req_1:         ONBOARD ACQ FOR 40.01;
    req_2:         SEQ 40.00 - 40.01 NO GAP;

!

    linenum:       40.010
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR32-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,
    req_1:         SEQ 40.01 - 40.03;
    req_2:         GROUP 40.01 - 40.04 WITHIN 9H;
    req_3:         CYCLE 2/40.00 - 40.28;

!

    linenum:       40.020
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR32-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       40.030
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR32-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       40.040
    sequence_1:    USE
    sequence_2:    ONBRD-ACQF
    targname:      TR32-OFFSET
    time_per_exp:  X40
    req_1:         ONBOARD ACQ FOR 40.10;
    req_2:         SEQ 40.04 - 40.10 NO GAP;

!

    linenum:       40.100
    sequence_1:    USE
    sequence_2:    RING-OCC
    targname:      TR32
    time_per_exp:  X30
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,
    req_1:         AT 10-OCT-92:19:15 +/- 1M;
    comment_1:     END EXPOSURE AT 10-OCT-92:19:44.

!

    linenum:       40.250
    sequence_1:    USE
    sequence_2:    ONBRD-ACQ
    targname:      TRITON-CENTER
    time_per_exp:  X40
    req_1:         ONBOARD ACQ FOR 40.260;

!

    linenum:       40.260
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR32-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,
    req_1:         SEQ 40.26 - 40.28;
    req_2:         GROUP 40.10 - 40.28 WITHIN 9H;

!

    linenum:       40.270
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR32-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       40.280
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR32-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       50.000
    sequence_1:    USE
    sequence_2:    ONBRD-ACQ
    targname:      TRITON-CENTER
    time_per_exp:  X40
    req_1:         ONBOARD ACQ FOR 50.01;
    req_2:         SEQ 50.00 - 50.01 NO GAP;

!

    linenum:       50.010
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR46-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,
    req_1:         SEQ 50.01 - 50.03;
    req_2:         GROUP 50.01 - 50.04 WITHIN 9H;
    req_3:         CYCLE 2/50.00 - 50.28;

!

    linenum:       50.020
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR46-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       50.030
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR46-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       50.040
    sequence_1:    USE
    sequence_2:    ONBRD-ACQF
    targname:      TR46-OFFSET
    time_per_exp:  X100
    req_1:         ONBOARD ACQ FOR 50.10;
    req_2:         SEQ 50.04 - 50.10 NO GAP;

!

    linenum:       50.100
    sequence_1:    USE
    sequence_2:    RING-OCC
    targname:      TR46
    time_per_exp:  X30
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,
    req_1:         AT 13-MAY-93:06:37 +/- 1M;
    comment_1:     END EXPOSURE AT 13-MAY-93:07:06.

!

    linenum:       50.250
    sequence_1:    USE
    sequence_2:    ONBRD-ACQ
    targname:      TRITON-CENTER
    time_per_exp:  X40
    req_1:         ONBOARD ACQ FOR 50.260;

!

    linenum:       50.260
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR46-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,
    req_1:         SEQ 50.26 - 50.28;
    req_2:         GROUP 50.10 - 50.28 WITHIN 9H;

!

    linenum:       50.270
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR46-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       50.280
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      TR46-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       70.000
    sequence_1:    USE
    sequence_2:    ONBRD-ACQ
    targname:      PLUTO-CENTER
    time_per_exp:  X40
    req_1:         ONBOARD ACQ FOR 70.01;
    req_2:         SEQ 70.00 - 70.01 NO GAP;

!

    linenum:       70.010
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      P19.04-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,
    req_1:         SEQ 70.01 - 70.03;
    req_2:         GROUP 70.01 - 70.04 WITHIN 9H;
    req_3:         CYCLE 2/70.00 - 70.28;

!

    linenum:       70.020
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      P19.04-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       70.030
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      P19.04-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       70.040
    sequence_1:    USE
    sequence_2:    ONBRD-ACQF
    targname:      P19.04-OFFSET
    time_per_exp:  X100
    req_1:         ONBOARD ACQ FOR 70.10;
    req_2:         SEQ 70.04 - 70.10 NO GAP;

!

    linenum:       70.100
    sequence_1:    USE
    sequence_2:    RING-OCC
    targname:      P19.04
    time_per_exp:  X30
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,
    req_1:         AT 1-FEB-93:11:33 +/- 1M;
    comment_1:     END EXPOSURE AT 1-FEB-93:12:02.

!

    linenum:       70.250
    sequence_1:    USE
    sequence_2:    ONBRD-ACQ
    targname:      PLUTO-CENTER
    time_per_exp:  X40
    req_1:         ONBOARD ACQ FOR 70.260;
    req_2:         GROUP 70.100 - 70.280 WITHIN 9H;

!

    linenum:       70.260
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      P19.04-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,
    req_1:         SEQ 70.26 - 70.28;

!

    linenum:       70.270
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      P19.04-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!

    linenum:       70.280
    sequence_1:    USE
    sequence_2:    BACK-SCAN
    targname:      P19.04-BACKGROUND
    time_per_exp:  X267
    param_1:       SAMPLE-TIME = 0.05,
    param_2:       PRECISION = HIGH,
    param_3:       DATA-FORMAT = ALL,
    param_4:       PMT-ANALOG = 10,
    param_5:       VIS-ANALOG = 1,

!
! end of exposure logsheet

scan_data:

    line_list:     40.01, 40.03, 40.26, 40.28
    fgs_scan:
    cont_dwell:    C
    dwell_pnts:    0
    dwell_secs:       0.00
    scan_width:       0.0000
    scan_length:     42.5000
    sides_angle:    90.0000
    number_lines:  1
    scan_rate:       0.0750
    first_line_pa: 258.0000
    scan_frame:    CEL
    len_offset:    0.
    wid_offset:    0.

!

    line_list:     40.02, 40.27
    fgs_scan:
    cont_dwell:    C
    dwell_pnts:    0
    dwell_secs:       0.00
    scan_width:       1.0000
    scan_length:     42.5000
    sides_angle:    90.0000
    number_lines:  5
    scan_rate:       0.0750
    first_line_pa: 257.0000
    scan_frame:    CEL
    len_offset:    0.
    wid_offset:    0.5

!

    line_list:     50.01, 50.03, 50.26, 50.28
    fgs_scan:
    cont_dwell:    C
    dwell_pnts:    0
    dwell_secs:       0.00
    scan_width:       0.0000
    scan_length:     42.5000
    sides_angle:    90.0000
    number_lines:  1
    scan_rate:       0.0750
    first_line_pa: 257.0000
    scan_frame:    CEL
    len_offset:    0.
    wid_offset:    0.

!

    line_list:     50.02, 50.27
    fgs_scan:
    cont_dwell:    C
    dwell_pnts:    0
    dwell_secs:       0.00
    scan_width:       1.0000
    scan_length:     42.5000
    sides_angle:    90.0000
    number_lines:  5
    scan_rate:       0.0750
    first_line_pa: 255.0000
    scan_frame:    CEL
    len_offset:    0.
    wid_offset:    0.5

!

    line_list:     70.01, 70.03, 70.26, 70.28
    fgs_scan:
    cont_dwell:    C
    dwell_pnts:    0
    dwell_secs:       0.00
    scan_width:       0.0000
    scan_length:     42.5000
    sides_angle:    90.0000
    number_lines:  1
    scan_rate:       0.0750
    first_line_pa: 257.0000
    scan_frame:    CEL
    len_offset:    0.
    wid_offset:    0.

!

    line_list:     70.02, 70.27
    fgs_scan:
    cont_dwell:    C
    dwell_pnts:    0
    dwell_secs:       0.00
    scan_width:       1.0000
    scan_length:     42.5000
    sides_angle:    90.0000
    number_lines:  5
    scan_rate:       0.0750
    first_line_pa: 257.0000
    scan_frame:    CEL
    len_offset:    0.
    wid_offset:    0.5

!
! end of scan data