!  File:  3068C.PROP
!  Database:  PEPDB
!  Date:  18-FEB-1994:14:25:02

coverpage:

  title_1:         IMAGING OF THE GRAVITATIONAL LENS 2237+0305
    sci_cat:       QUASARS & AGN
    proposal_for:  SAT/WFC
    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, SPECTROSCOPY, GALAXY,
    keywords_2:    GRAVITATIONAL LENS
    hours_pri:     1.65
    num_pri:       11
    wf_pc:         X
    fos:           X
    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
    off_telex:     837680
! end of coverpage

abstract:

    line_1:        WFC images of the gravitational lens 2237+0305 will be taken
    line_2:        in the F702W and F336W filters.

!
! 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

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        We will take WFC images of the gravitational lens 2237+0305.

!

  question:        4
    section:       1
    line_1:        HST observations will provide sufficient spatial resolution
    line_2:        to cleanly separate the four images of the lensed quasar.

!

  question:        5
    section:       1
    line_1:        The exposures should be taken consecutively.

!

  question:        6
    section:       1
    line_1:        Exposures should be centered on one CCD.

!

  question:        7
    section:       1
    line_1:        Data reduction and analysis will be performed at the IAS.

!

  question:        8
    section:       1
    line_1:        Extensive ground observations exists.

!

  question:        10
    section:       1
    line_1:        Full computing support will be supplied by IAS.

!

  question:        13
    section:       1
    line_1:
    line_7:        WF/PC images will be obtained of the lensing galaxy,
    line_8:        2237+0305, in order to locate accurately the quasar
    line_9:        position and to measure the surface brightness of the inner
    line_10:       region of the galaxy.

!
!end of general form text

general_form_address:

  lname:           BAHCALL
    fname:         JOHN
    mi:            N.
    category:      PI
    inst:          INSTITUTE FOR ADVANCED STUDY

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        2237+0305
    descr_1:       GRAVITATIONAL LENS CANDIDATE BEHIND Z=0.04
    descr_2:       SPIRAL GALAXY
    pos_1:         RA = 22H 40M 30.3S +/- 0.1S,
    pos_2:         DEC = +03D 21' 31" +/- 1.0"
    equinox:       2000
    pm_or_par:     NO
    rv_or_z:       Z=1.695
    fluxnum_1:     1
    fluxval_1:     V = 16.1 +/- 0.2

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      2237+0305
    config:        WFC
    opmode:        IMAGE
    aperture:      W1
    sp_element:    F336W
    num_exp:       1
    time_per_exp:  150S
    priority:      1
    param_1:       PRE-FLASH=YES ,
    param_2:       CR-SPLIT=NO
    req_2:         CYCLE 0 / 1-5

!

    linenum:       2.000
    targname:      2237+0305
    config:        WFC
    opmode:        IMAGE
    aperture:      W1
    sp_element:    F336W
    num_exp:       1
    time_per_exp:  750S
    priority:      1
    param_1:       PRE-FLASH=YES ,
    param_2:       CR-SPLIT=NO

!

    linenum:       3.000
    targname:      2237+0305
    config:        WFC
    opmode:        IMAGE
    aperture:      W1
    sp_element:    F702W
    num_exp:       1
    time_per_exp:  30S
    priority:      1
    param_1:       PRE-FLASH=YES ,
    param_2:       CR-SPLIT=NO

!

    linenum:       4.000
    targname:      2237+0305
    config:        WFC
    opmode:        IMAGE
    aperture:      W1
    sp_element:    F702W
    num_exp:       1
    time_per_exp:  300S
    priority:      1
    param_1:       PRE-FLASH=YES ,
    param_2:       CR-SPLIT=NO

!

    linenum:       5.000
    targname:      2237+0305
    config:        WFC
    opmode:        IMAGE
    aperture:      W1
    sp_element:    F702W
    num_exp:       1
    time_per_exp:  2100S
    fluxnum_1:     1
    priority:      1
    param_1:       PRE-FLASH=NO ,
    param_2:       CR-SPLIT=NO
    req_2:         NON-INT / 1-5

!
! end of exposure logsheet

! No scan data records found