!  File:  3946C.PROP
!  Database:  PEPDB
!  Date:  20-FEB-1994:01:09:34

coverpage:

  title_1:         HIGHLY EVOLVED STARS OF LOW MASS
    title_2:       CYCLE 2 BASELINE: FOS SPECTRA OF NPN 7027
    sci_cat:       STELLAR ASTROPHYSICS
    sci_subcat:    SUBLUMINOUS STARS
    proposal_for:  GTO/HRS
    pi_fname:      SARA
    pi_mi:         R.
    pi_lname:      HEAP
    pi_inst:       NASA, GODDARD SPACE FLIGHT CENTER
    pi_country:    USA
    pi_phone:      301-344-5359
    keywords_1:    PLANETARY NEBULAE, PLANETARY NUCLEI
    hours_pri:     1.84
    num_pri:       9
! end of coverpage

abstract:

    line_1:        The FOS will be used to obtain a spectrum of the
    line_2:        central star of the planetary nebulae, NGC 7027. This
    line_3:        star is one of the hottest stars known (170,000 K).

!
! end of abstract

general_form_proposers:

  lname:           HEAP
    fname:         SARA
    mi:            R.
    inst:          NASA, GODDARD SPACE FLIGHT CENTER
    country:       USA

!

  lname:           HARRINGTON
    fname:         PAT
    inst:          UNIV. OF MARYLAND, COLLEGE PARK
    country:       USA

!

  lname:           HUBENY
    fname:         IVAN
    inst:          NASA, GODDARD SPACE FLIGHT CENTER
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:
    line_3:        In our Cycle 2 baseline time, we'll obtain a FOS
    line_4:        spectrum of the central star of NGC 7027.

!

  question:        4
    section:       1
    line_1:        High spatial resolution is
    line_2:        necessary to isolate the central
    line_3:        from the bright surrounding nebula.

!

  question:        5
    section:       1
    line_1:
    line_4:        No special scheduling requirements are expected.

!

  question:        6
    section:       1
    line_1:
    line_3:        The central star of NGC 7027 is very faint.
    line_4:        Observations of this objects should be attempted
    line_5:        only in low-dark periods (no SAA).

!

  question:        7
    section:       1
    line_1:        Carry out an non-LTE analysis of the central star,
    line_2:        which is expected to be a VERY hot white dwarf.

!

  question:        13
    section:       1
    line_1:        We propose to study central stars of planetary nebulae,
    line_2:        including (1) extremely hot stars, (2) the carbon-rich
    line_3:        stars and nebulae, (3) stars with strong winds, and
    line_4:        (4) uv-bright stars to be discovered in globular clusters.

!
!end of general form text

general_form_address:

  lname:           HEAP
    fname:         SARA
    mi:            R.
    category:      PI
    inst:          GODDARD SPACE FLIGHT CENTER
    addr_1:        CODE 681
    city:          GREENBELT
    state:         MD
    zip:           20771
    country:       USA
    phone:         301-344-9545

!
! end of general_form_address records

fixed_targets:

    targnum:       4
    name_1:        NGC7027-OFFSET
    descr_1:       A
    pos_1:         RA=21H 07M 2.695S +/- 0.75",
    pos_2:         DEC= +42D 14' 10.09" +/- 0.75"
    equinox:       2000
    comment_1:     COORDINATES ARE MEASURED FROM
    comment_2:     PLATE (TAKEN AT CFHT UNDER VERY
    comment_3:     GOOD SEEING) USING THE GSSS.
    comment_4:     HST WILL EXECUTE BLIND OFFSET
    comment_5:     TO NGC7027-STAR.

!

    targnum:       6
    name_1:        NGC7027-STAR
    descr_1:       A, 184
    pos_1:         RA-OFF= -0.933S +/- 0.027S,
    pos_2:         DEC-OFF= -0.100" +/- 0.3",
    pos_3:         FROM 4
    equinox:       2000
    pm_or_par:     NO
    acqpr_1:       BKG
    comment_1:     COORDINATES ARE MEASURED FROM
    comment_2:     PLATE (TAKEN AT CFHT UNDER
    comment_3:     0.7" SEEING) USING THE GSSS.
    comment_4:     HST WILL EXECUTE BLIND OFFSET
    comment_5:     FROM NGC7027-OFFSET.
    fluxnum_1:     1
    fluxval_1:     F(4800)=0.128E-14
    fluxnum_2:     2
    fluxval_2:     V=16.14, E(B-V)=0.90

!

    targnum:       7
    name_1:        NGC7027-NEB
    pos_1:         RA-OFF= -0.933S +/- 0.027S,
    pos_2:         DEC-OFF= -2.100" +/- 0.3",
    pos_3:         FROM 4
    equinox:       2000
    pm_or_par:     NO
    comment_1:     NEBULAR BKG 2" S OF CSPN

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       140.000
    targname:      NGC7027-OFFSET
    config:        FOS/RD
    opmode:        ACQ/BINARY
    aperture:      4.3
    sp_element:    MIRROR
    num_exp:       1
    time_per_exp:  11S
    priority:      1
    param_1:       BRIGHT=300000
    req_1:         ONBOARD ACQ FOR 140.5; CYCLE 2
    comment_1:     EXPOSURE TIME CALC. FROM
    comment_2:     ASSUMING REF STAR IS A
    comment_3:     V=15.3M K0 III STAR

!

    linenum:       140.500
    targname:      NGC7027-STAR
    config:        FOS/RD
    opmode:        ACQ/PEAK
    aperture:      1.0
    sp_element:    G570H
    wavelength:    5250-5750
    num_exp:       1
    time_per_exp:  10S
    fluxnum_1:     1
    priority:      1
    param_1:       SEARCH-SIZE=4,SCAN-STEP=0.35
    req_1:         ONBOARD ACQ FOR 141; CYCLE 2
    comment_1:     T(PEAK) BASED ON CSPN V=16.1
    comment_2:     ESTIMATED COUNTS
    comment_3:     = .8 C/S/D * 10 S * 170 DIODES
    comment_4:     = 1360 COUNTS PER DWELL POINT
    comment_5:     OVERHEAD: 4.5 +0.7*4*4 = 15.7M

!

    linenum:       141.000
    targname:      NGC7027-STAR
    config:        FOS/RD
    opmode:        ACCUM
    aperture:      1.0
    sp_element:    G400H
    num_exp:       1
    time_per_exp:  45M
    fluxnum_1:     1
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       142.000
    targname:      NGC7027-NEB
    config:        FOS/RD
    opmode:        RAPID
    aperture:      1.0
    sp_element:    G400H
    num_exp:       1
    time_per_exp:  10M
    fluxnum_1:     1
    priority:      1
    req_1:         CYCLE 2

!
! end of exposure logsheet

! No scan data records found