!  File:  4886C.PROP
!  Database:  PEPDB
!  Date:  23-FEB-1994:08:01:44

coverpage:

  title_1:         CO ON MARS - CYCLE 3 - HIGH
    sci_cat:       SOLAR SYSTEM
    sci_subcat:    TERRESTRIAL PLANETS
    proposal_for:  GTO/OS
    pi_title:      DR.
    pi_fname:      JOHN
    pi_mi:         J
    pi_lname:      CALDWELL
    pi_inst:       INSTITUTE FOR SPACE AND TERRESTRIAL SCIENCE
    pi_country:    CANADA
    pi_phone:      (416) 665-5444
    keywords_1:    MARS, CARBON MONOXIDE, AERONOMY
    hours_pri:     0.64
    num_pri:       1
    hrs:           Y
! end of coverpage

abstract:

    line_1:        MARS WILL BE OBSERVED WITH THE HRS TO OBSERVE THE CAMERON BAND OF CO
    line_2:        AT 2060 A.  ACCURATE MODELS FOR, AND LABORATORY OBSERVATIONS OF, THE
    line_3:        ABSORPTION PROPERTIES OF THIS BAND, WHEN APPLIED TO VIKING MODELS OF
    line_4:        THE ATMOSPHERE OF MARS, INDICATE THAT THE HST GHRS WILL BE ABLE TO
    line_5:        OBTAIN AN EXCELLENT CO SPECTRUM IN 20 MINUTES.  THE HRS OBSERVATIONS
    line_6:        WILL YIELD THE FIRST REMOTE TEMPERATURE EVER MEASURED BY ULTRAVIOLET
    line_7:        ABSORPTION SPECTROSCOPY.

!
! end of abstract

general_form_proposers:

  lname:           CALDWELL
    fname:         JOHN
    title:         DR.
    mi:            J
    inst:          INSTITUTE FOR SPACE AND TERRESTRIAL SCIENCE
    country:       CANADA

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        S/N OF 20 PER DIODE IN 20 MIN EXPOSURE TIME IS ESTIMATED FROM GHRS
    line_2:        OBSERVATIONS OF 16 CYG B, A SOLAR ANALOG STAR AND FROM THE VISUAL
    line_3:        MAGNITUDES OF MARS AND 16 CYG B, THE FRACTION OF THE PLANETARY DISK
    line_4:        WITHIN THE GHRS LARGE APERTURE, AND THE DIFFERENCE IN MARS' ALBEDO
    line_5:        FROM V TO 2060 A.

!

  question:        5
    section:       1
    line_1:        THE OBSERVATIONS SHOULD LITERALLY BE MADE AS SOON AS POSSIBLE,
    line_2:        BECAUSE MARS IS LEAVING OPPOSITION AND PROGRESSIVELY BECOMING LESS
    line_3:        FAVORABLY SITUATED.  THIS IS NOT A CRITICAL CONDITION, BUT IT IS A
    line_4:        SIGNIFICANT ONE.

!

  question:        7
    section:       1
    line_1:        THE SPECTRA WILL BE BINNED IF NECESSARY AND RATIOED TO PUBLISHED
    line_2:        SOLAR UV SPECTRA AND 16 CYG B SPECTRA FROM HST TO GIVE ALBEDOS
    line_3:        SUITABLE FOR MODELLING ABUNDANCE AND TEMPERATURE.  BOTH TECHNIQUES
    line_4:        WILL BE INVESTIGATED BECAUSE NEITHER ARE PERFECT:  16 CYG B IS NOT
    line_5:        THE SUN, AND THE SUN HAS NOT BEEN OBSERVED WITH THE HST.

!

  question:        13
    section:       1
    line_1:        ONE SETTING OF G200M WILL COVER THE ENTIRE CO CAMERON BAND AT 2060A.
    line_2:        THE OBSERVED ALBEDO, INCLUDING CO BAND ABSORPTION, WILL BE COMPARED
    line_3:        BY COMPARISON TO ACCURATE MOLECULAR BAND MODELS DEVELOPED BY THE PI
    line_4:        AND COLLABORATORS.  THE MOLECULAR MODELS HAVE ALSO BEEN COMPARED TO
    line_5:        LABORATORY OBSERVATIONS MADE BY THE PI AND DIFFERENT COLLABORATORS
    line_6:        SPECIFICALLY TO TEST THE MOLECULAR BAND MODELS. THE LAB OBSERVATIONS
    line_7:        IN TURN WERE MADE AT LOW TEMPERATURES AND PRESSURES, SPECIFICALLY TO
    line_8:        GIVE ENVIRONMENTAL CONDITIONS AS NEAR AS POSSIBLE TO PLANETARY ONES.
    line_9:        ONES.  THE MOLECULAR MODELS ARE IN EXCELLENT AGREEMENT WITH THE LAB
    line_10:       OBSERVATIONS, SO THE NECESSARY EXTRAPOLATION TO VERY SIMILAR VALUES
    line_11:       OF TEMPERATURE AND PRESSURE ON MARS WILL HAVE MINIMAL UNCERTAINTY.

!
!end of general form text

general_form_address:

  lname:           CALDWELL
    fname:         JOHN
    mi:            J
    title:         DR.
    category:      PI
    inst:          INSTITUTE FOR SPACE AND TERRESTRIAL SCIENCE
    addr_1:        SPACE ASTROPHYSICS LABORATORY
    addr_2:        4850 KEELE STREET, SECOND FLOOR
    city:          NORTH YORK
    state:         ON
    zip:           M3J 3K1
    country:       CANADA
    phone:         (416) 665-5444
    telex:         (416) 665-5497

!
! end of general_form_address records

! No fixed target records found

solar_system_targets:

  targnum:         1
    name_1:        MARS
    descr_1:       PLANET MARS
    lev1_1:        STD = MARS
    comment_1:     POINT AND SHOOT AT THE CENTER OF MARS.
    comment_2:     S/N DETERMINED FROM HST OBSERVATION OF
    comment_3:     G STAR AND FROM OAO-2 OBSERVATION OF
    comment_4:     MARS' ALBEDO.

!
! end of solar system targets

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      MARS
    config:        HRS
    opmode:        ACCUM
    aperture:      2.0
    sp_element:    G200M
    wavelength:    2060
    num_exp:       1
    time_per_exp:  20M
    s_to_n:        20
    s_to_n_time:   20M
    priority:      1
    param_1:       STEP-PATT=1
    req_1:         BEFORE 15-MAY-93; CYCLE 3;
    comment_1:     MARS IS LEAVING OPP'N, SO EARLY OBS.
    comment_2:     IS PREFERABLE. REQ-1 MAY BE RELAXED
    comment_3:     AFTER CONSULTATION WITH PI AT (416)
    comment_4:     665-5444. EXP. TIME MAY BE TRIMMED TO
    comment_5:     FIT VIS. PER.  S/N DETERMINED FROM
    comment_6:     EARLIER STELLAR AND PLANET. OBSERV.

!
! end of exposure logsheet

! No scan data records found