!  File:  3992C.PROP
!  Database:  PEPDB
!  Date:  20-FEB-1994:02:59:01

coverpage:

  title_1:         GRAVITATIONAL LENS CANDIDATE 1208+101: SPECTROSCOPY
    sci_cat:       QUASARS & AGN
    proposal_for:  DD
    cont_id:       3981
    pi_title:      DR.
    pi_fname:      JOHN
    pi_mi:         N
    pi_lname:      BAHCALL
    pi_inst:       INSTITUTE FOR ADVANCED STUDY
    pi_country:    USA
    pi_phone:      (609) 734-8054
    keywords_1:    QUASAR, GRAVITATIONAL LENS
    hours_pri:     2.27
    num_pri:       1
    fos:           Y
    pi_position:   DR. JOHN N. BAHCALL
    off_fname:     ALLEN
    off_lname:     ROWE
    off_title:     ASSOC DIR ADM/FIN
    off_addr_1:    INSTITUTE FOR ADVANCED STUDY
    off_addr_2:    OLDEN LANE
    off_city:      PRINCETON
    off_state:     NJ
    off_zip:       08540
    off_country:   USA
    off_phone:     (609) 734-8205
! end of coverpage

abstract:

    line_1:        We will obtain low resolution FOS spectra of the high-redshift quasar
    line_2:        1208+101 and the brightest of two candidate gravitational
    line_3:        lens images, located about .5 arcsec from the primary image.
    line_4:        The 0.3 arcsec circular aperture will be used to spatially
    line_5:        resolve the images, to test the gravitational lens hypothesis.
    line_6:        Only HST can provide sufficient spatial resolution to permit
    line_7:        sufficiently accurate spectrophotometry of the individual images.

!
! end of abstract

general_form_proposers:

  lname:           BAHCALL
    fname:         JOHN
    mi:            N
    inst:          INSTITUTE FOR ADVANCED STUDY
    country:       USA

!

  lname:           SCHNEIDER
    fname:         DONALD
    mi:            P
    inst:          INSTITUTE FOR ADVANCED STUDY
    country:       USA

!

  lname:           MAOZ
    fname:         DAN
    inst:          INSTITUTE FOR ADVANCED STUDY
    country:       USA

!

  lname:           DOXSEY
    fname:         ROGER
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA

!

  lname:           HARTIG
    fname:         GEORGE
    mi:            F
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        FOS/RD observations will be made with grating G650L and
    line_2:        the 0.3 arcsec aperture of the two brightest sources
    line_3:        associated with 1208+101. Exposure times of 10 and 38M
    line_4:        will yield SNR, per 25A resolution element, of about 10.
    line_5:        A similar spectrum of the sky, at a point opposite the
    line_6:        fainter target from the brighter, will also be obtained,
    line_7:        to permit accurate subtraction of the contribution of the
    line_8:        brighter target PSF from the spectrum of the fainter.

!

  question:        4
    section:       1
    line_1:        HST observations are required in order to resolve the
    line_2:        components.  The image separations are too small to
    line_3:        obtain spectra of sufficient purity to test the
    line_4:        gravitatinal lens hypothesis.

!

  question:        5
    section:       1
    line_1:

!

  question:        7
    section:       1
    line_1:        Data reduction and analysis will be performed at both the
    line_2:        Institute for Advanced Study and at STScI.

!

  question:        8
    section:       1
    line_1:

!

  question:        10
    section:       1
    line_1:        Computing support and research associates will be available
    line_2:        at both IAS and STScI as required by the science.

!

  question:        13
    section:       1
    line_1:

!
!end of general form text

general_form_address:

  lname:           BAHCALL
    fname:         JOHN
    mi:            N
    title:         DR.
    category:      PI
    inst:          INSTITUTE FOR ADVANCED STUDY
    addr_1:        OLDEN LANE
    city:          PRINCETON
    state:         NJ
    zip:           08540
    country:       USA
    phone:         (609) 734-8054
    telex:         837680

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        1208+101-A
    descr_1:       QUASAR
    pos_1:         RA=12H 08M 23.7S +/- 0.1S,
    pos_2:         DEC=+10D 11' 08.0" +/- 1.0"
    equinox:       1950
    pm_or_par:     N
    rv_or_z:       Z=3.8
    fluxnum_1:     1
    fluxval_1:     V = 17.9 +/- 0.2

!

    targnum:       2
    name_1:        1208+101-B
    descr_1:       QUASAR
    pos_1:         R=0.47",
    pos_2:         PA=140D,
    pos_3:         FROM 1
    equinox:       1950
    pm_or_par:     N
    rv_or_z:       Z=3.8
    comment_1:     R AND PA MAY REQ SMALL ADJUSTMENT
    comment_2:     BASED ON PROP 3981 IMAGE ANALYSIS
    fluxnum_1:     1
    fluxval_1:     V = 19.3 +/- 0.5

!

    targnum:       3
    name_1:        1208+101-C
    descr_1:       SKY
    pos_1:         R=0.47",
    pos_2:         PA=320D,
    pos_3:         FROM 1
    pm_or_par:     N
    comment_1:     R AND PA MAY REQ SMALL ADJUSTMENT
    comment_2:     BASED ON PROP 3981 IMAGE ANALYSIS
    fluxnum_1:     1
    fluxval_1:     SURF(V) = 23 +/- 1

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      1208+101-A
    config:        FOS/RD
    opmode:        ACQ/BINARY
    aperture:      4.3
    sp_element:    MIRROR
    num_exp:       1
    time_per_exp:  88S
    priority:      1
    req_1:         ONBOARD ACQ FOR 1.1;
    req_2:         CYCLE 1/1-4

!

    linenum:       1.100
    targname:      1208+101-A
    config:        FOS/RD
    opmode:        ACQ/PEAK
    aperture:      0.3
    sp_element:    MIRROR
    num_exp:       1
    time_per_exp:  10S
    priority:      1
    param_1:       SEARCH-SIZE=6,
    param_2:       SCAN-STEP=0.06
    req_1:         ONBOARD ACQ FOR 2-4;

!

    linenum:       2.000
    targname:      1208+101-A
    config:        FOS/RD
    opmode:        RAPID
    aperture:      0.3
    sp_element:    G650L
    num_exp:       1
    time_per_exp:  600S
    fluxnum_1:     1
    priority:      1
    param_1:       READ-TIME=40
    comment_1:     PLEASE PAD EXPO TO FILL ALIGNMENT

!

    linenum:       3.000
    targname:      1208+101-B
    config:        FOS/RD
    opmode:        RAPID
    aperture:      0.3
    sp_element:    G650L
    num_exp:       1
    time_per_exp:  2280S
    fluxnum_1:     1
    priority:      1
    param_1:       READ-TIME=40
    comment_1:     PLEASE PAD EXPO TO FILL ALIGNMENT

!

    linenum:       4.000
    targname:      1208+101-C
    config:        FOS/RD
    opmode:        RAPID
    aperture:      0.3
    sp_element:    G650L
    num_exp:       1
    time_per_exp:  2280S
    fluxnum_1:     1
    priority:      1
    param_1:       READ-TIME=40
    comment_1:     PLEASE PAD EXPO TO FILL ALIGNMENT

!
! end of exposure logsheet

! No scan data records found