!  File:  2850C.PROP
!  Database:  PEPDB
!  Date:  17-FEB-1994:18:32:23

coverpage:

  title_1:         PART 2-APERTURE OFFSETS AND FIRST-ORDER WAVELENGTH CALIBRATIONS
    sci_cat:       CALIBRATION
    proposal_for:  CAL/HRS
    pi_fname:      DOUGLAS
    pi_mi:         K.
    pi_lname:      DUNCAN
    pi_inst:       STSCI
    pi_country:    USA
    pi_phone:      301-338-4935
    hours_pri:     5.88
    num_pri:       1
    hrs:           Y
    pi_position:   GHRS INST. SCIENTIST
! end of coverpage

abstract:

    line_1:        The purpose of the test is to calibrate the geometrical offsets between the
    line_2:        Large Science Aperture and the Small Science Aperture, so that dispersion
    line_3:        constants derived for the SSA may be used to assign accurate wavelengths to
    line_4:        spectra obtained with the LSA. Proposal 2097a observes the same star
    line_5:        as the IDT does in SV; Prop. 2097b one of the Hobbs-York wavelength
    line_6:        standard stars to tie GHRS wavelengths to the external world (this
    line_7:        is the fundamental HST wavelength standard).

!
! end of abstract

general_form_proposers:

  lname:           DUNCAN
    fname:         DOUGLAS
    mi:            K.
    inst:          STSCI
    country:       USA

!

  lname:           GILLILAND
    fname:         RONALD
    mi:            L.
    inst:          STSCI
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        2
    section:       1
    line_1:
    line_4:        The purpose of the test is to calibrate the geometrical offsets between the
    line_5:        Large Science Aperture and the Small Science Aperture, so that dispersion
    line_6:        constants derived for the SSA may be used to assign accurate wavelengths to
    line_7:        spectra obtained with the LSA.

!

  question:        3
    section:       1
    line_1:        OBSERVATION: The star will be acquired using an On-board (Mode II)
    line_2:        acquisition, and will be centered in the LSA. A field map will be taken to
    line_3:        measure the precise location in the aperture. The carrousel will then be
    line_4:        rotated to position the desired grating at the chosen wavelength. Spectral
    line_5:        lamp SC1 will be turned on and its spectrum will be recorded, including
    line_6:        deriving a new SPYBAL offset. The spectrum of the star in the LSA will be
    line_7:        recorded next. The star will then be translated to the SSA, and its spectrum
    line_8:        will be recorded. It is important that the carrousel not be moved bwtween
    line_9:        these three observations. After the SSA spectrum, the carrousel will be
    line_10:       rotated to position the acquisition mirror, and a field map of the SSA will be
    line_11:       obtained. After this map, the star will be returned to the center of the LSA.
    line_12:       This sequence will be repeated at four or five wavelengths (carrousel
    line_13:       positions) for each of the four medium resolution first order gratings. The
    line_14:       spectrum will contain many deep and narrow interstellar absorption lines at
    line_15:       each of the selected wavelengths. The precise locations of many lines will be
    line_16:       compared to derive the offset of the LSA spectrum with respect to the SSA
    line_17:       spectrum. The offsets will be calibrated for each grating as functions of
    line_18:       carrousel angle and sample position.

!

  question:        4
    section:       1
    line_1:        Offsets between the Small Science Aperture and the two Pt-Ne spectral lamps
    line_2:        were established during the Phase 6 ground based calibration program. There
    line_3:        was no easy way to center a point source in the Large Science Aperture, and
    line_4:        offsets for the LSA were not measured. This test will use interstellar lines
    line_5:        in a stellar spectrum observed through both apertures to derive offsets for the
    line_6:        LSA relative to the SSA.

!

  question:        6
    section:       0
    line_1:        None are requested.

!

  question:        7
    section:       1
    line_1:        The target spectrum contains many
    line_2:        narrow absorption lines from interstellar material. The
    line_3:        observations of the SC1 lamp will establish a precise wavelength scale for the
    line_4:        SSA at each carrousel position. The positions of many lines across the entire
    line_5:        diode array will be measured in the stellar spectra observed through both the
    line_6:        LSA and the SSA. The field maps of the apertures will provide information
    line_7:        about the precise location of the star within each aperture. The observed
    line_8:        offsets will be parameterized as functions of carrousel position and diode
    line_9:        number (or sample).

!
!end of general form text

general_form_address:

  lname:           DUNCAN
    fname:         DOUGLAS
    mi:            K
    category:      PI
    inst:          ST SCI
    addr_1:        3700 SAN MARTIN DRIVE
    city:          BALTIMORE
    state:         MD
    zip:           21218
    country:       USA

!

  lname:           DUNCAN
    fname:         DOUGLAS
    category:      PI
    inst:          STSCI
    addr_1:        3700 SAN MARTIN DR.
    city:          BALTIMORE
    state:         MD
    zip:           21218
    country:       USA
    phone:         301-338-4935

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        HD40111
    descr_1:       HOBBS-YORK ABSOLUTE WAVELENGTH STD.
    descr_2:       HOT STAR WITH LOTS OF INTERSTELLAR LINES
    pos_1:         RA=5H 54M 53.418S +/- 0.05S,
    pos_2:         DEC=25D 56' 58.2" +/- 0.5"
    equinox:       1950
    pm_or_par:     NO
    comment_1:     PRIMARY TARGET. HOBBS-YORK STAR=
    comment_2:     139 TAU.
    fluxnum_1:     1
    fluxval_1:     V=4.82
    fluxnum_2:     2
    fluxval_2:     E(B-V)=0.13
    fluxnum_3:     3
    fluxval_3:     F-CONT(1400)=6.5 E-10

!

    targnum:       2
    name_1:        HD93521
    name_2:        GSC3009-2547
    descr_1:       ^
    pos_1:         RA=10H 48M 23.51S +/- 0.5S,
    pos_2:         DEC=+37D 34' 12.8" +/- 0.3",
    pos_3:         PLATE-ID=01RB
    equinox:       2000
    pm_or_par:     NO
    comment_1:     SECONDARY TARGET.
    fluxnum_1:     1
    fluxval_1:     V=7.04
    fluxnum_2:     2
    fluxval_2:     B-V=-0.28
    fluxnum_3:     3
    fluxval_3:     E(B-V)=0.03
    fluxnum_4:     4
    fluxval_4:     F-CONT(1200)=2.8E-10
    fluxnum_5:     5
    fluxval_5:     F-CONT(1300)=3.3E-10
    fluxnum_6:     6
    fluxval_6:     F-CONT(1400)=2.3E-10
    fluxnum_7:     7
    fluxval_7:     F-CONT(1650)=1.3E-10
    fluxnum_8:     8
    fluxval_8:     F-CONT(2000)=1.0E-10
    fluxnum_9:     9
    fluxval_9:     F-CONT(2400)=6.5E-11
    fluxnum_10:    10
    fluxval_10:    F-CONT(2800)=4.0E-11

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    sequence_1:    DEFINE
    sequence_2:    SPECT
    targname:      WAVE
    config:        HRS
    opmode:        ACCUM
    aperture:      SC1
    sp_element:    #
    wavelength:    1000
    num_exp:       1
    time_per_exp:  68S
    priority:      1
    param_1:       STEP-PATT=5,
    param_2:       COMB=TWO,
    param_3:       DOPPLER=DEF,
    req_1:         CALIB FOR 2-3;
    req_2:         SEQ 1-3 NO GAP;
    comment_1:     DO NOT MOVE CARROUSEL DURING 1-3.
    comment_2:     SUBSTEP PATTERN #5 = 4 SAMPLES
    comment_3:     PER DIODE WIDTH, 2 BACKGROUND
    comment_4:     BINS, 2 POINT COMB-ADDITION. COMPUTE
    comment_5:     AND APPLY NEW SPYBAL OFFSET.
    comment_6:     FIVE COMPLETE COMB CYCLES.

!

    linenum:       2.000
    sequence_1:    ^
    targname:      HD93521
    config:        ^
    opmode:        ^
    aperture:      2.0
    sp_element:    ^
    wavelength:    ^
    num_exp:       ^
    time_per_exp:  27.2S
    s_to_n:        30
    fluxnum_1:     3
    priority:      ^
    param_1:       ^
    comment_1:     APPLY SPYBAL FROM 1.

!

    linenum:       3.000
    sequence_1:    ^
    targname:      ^
    config:        ^
    opmode:        ^
    aperture:      0.25
    sp_element:    ^
    wavelength:    ^
    num_exp:       ^
    time_per_exp:  40.8S
    s_to_n:        ^
    fluxnum_1:     ^
    priority:      ^
    param_1:       ^
    comment_1:     APPLY SPYBAL FROM 1.

!

    linenum:       4.000
    sequence_1:    DEFINE
    sequence_2:    MAPLSA
    targname:      ^
    config:        ^
    opmode:        IMAGE
    aperture:      2.0
    sp_element:    ^
    num_exp:       1
    time_per_exp:  48.4S
    priority:      1

!

    linenum:       5.000
    sequence_1:    DEFINE
    sequence_2:    MAPSSA
    targname:      ^
    config:        ^
    opmode:        ^
    aperture:      0.25
    sp_element:    ^
    num_exp:       ^
    time_per_exp:  96.8S
    priority:      ^
    param_1:       DELTA-X=1,
    param_2:       DELTA-Y=1,
    param_3:       PRECISION=HIGH,

!

    linenum:       6.000
    targname:      HD93521
    config:        HRS
    opmode:        ACQ
    aperture:      2.0
    sp_element:    MIRROR-A1
    num_exp:       1
    time_per_exp:  25S
    fluxnum_1:     1
    priority:      1
    param_1:       FAINT=120,
    req_1:         ONBOARD ACQ FOR 6.6-15;
    req_2:         GUID TOL 0.012" / 6.0-15
    comment_1:     STEP-TIME=1

!

    linenum:       6.500
    targname:      WAVE
    config:        HRS
    opmode:        ACCUM
    aperture:      SC1
    sp_element:    MIRROR-A1
    num_exp:       1
    time_per_exp:  272S
    priority:      1
    param_1:       STEP-PATT=5,
    param_2:       COMB=TWO,
    req_1:         CALIB FOR 7-15;
    req_2:         SEQ 6.6-6.8 NO GAP;
    comment_1:     COMPUTE AND APPLY NEW SPYBAL OFFSET.
    comment_2:     USE 20 COMB CYCLES = 40 REPEATS OF
    comment_3:     SUBSTEP PATTERN #5.

!

    linenum:       6.600
    targname:      HD93521
    config:        HRS
    opmode:        ACCUM
    aperture:      2.0
    sp_element:    MIRROR-A1
    num_exp:       1
    time_per_exp:  13.6S
    s_to_n:        100
    fluxnum_1:     1
    priority:      1
    param_1:       STEP-PATT=5,
    param_2:       COMB=TWO,
    comment_1:     COMPUTE AND APPLY NEW SPYBAL OFFSET.
    comment_2:     USE 1 COMB CYCLE = 2 REPEATS OF
    comment_3:     SUBSTEP PATTERN #5.

!

    linenum:       6.800
    targname:      HD93521
    config:        HRS
    opmode:        ACCUM
    aperture:      0.25
    sp_element:    MIRROR-A1
    num_exp:       1
    time_per_exp:  13.6S
    s_to_n:        100
    fluxnum_1:     1
    priority:      1
    param_1:       STEP-PATT=5,
    param_2:       COMB=TWO,
    comment_1:     COMPUTE AND APPLY NEW SPYBAL OFFSET.
    comment_2:     USE 1 COMB CYCLE = 2 REPEATS OF
    comment_3:     SUBSTEP PATTERN #5.

!

    linenum:       7.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A1
    req_1:         SEQ 7-9 NO GAP;

!

    linenum:       8.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G140M
    wavelength:    X1.19
    time_per_exp:  X2
    req_1:         ^

!

    linenum:       9.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A1
    req_1:         ^

!

    linenum:       10.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-N1
    req_1:         SEQ 10-12 NO GAP;

!

    linenum:       11.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G140M
    wavelength:    X1.27
    time_per_exp:  X2
    req_1:         ^

!

    linenum:       12.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A1
    req_1:         ^

!

    linenum:       13.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A1
    req_1:         SEQ 13-15 NO GAP;

!

    linenum:       14.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G140M
    wavelength:    X1.608
    time_per_exp:  X4
    req_1:         ^

!

    linenum:       15.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A1
    req_1:         ^

!

    linenum:       19.000
    targname:      HD93521
    config:        HRS
    opmode:        ACQ
    aperture:      2.0
    sp_element:    MIRROR-A2
    num_exp:       1
    time_per_exp:  5S
    fluxnum_1:     1
    priority:      1
    param_1:       FAINT=1000,
    req_1:         ONBOARD ACQ FOR 19.6-61;
    req_2:         GUID TOL 0.012" / 19-61

!

    linenum:       19.500
    targname:      WAVE
    config:        HRS
    opmode:        ACCUM
    aperture:      SC1
    sp_element:    MIRROR-A2
    num_exp:       1
    time_per_exp:  80S
    priority:      1
    param_1:       STEP-PATT=3,
    param_2:       COMB=TWO,
    param_3:       STEP-TIME=5,
    req_1:         CALIB FOR 20-61;
    req_2:         SEQ 19.6-19.8 NO GAP;
    comment_1:     COMPUTE AND APPLY NEW SPYBAL OFFSET.
    comment_2:     USE 4 COMB CYCLES = 8 REPEATS OF
    comment_3:     SUBSTEP PATTERN #3.

!

    linenum:       19.600
    targname:      HD93521
    config:        HRS
    opmode:        ACCUM
    aperture:      2.0
    sp_element:    MIRROR-A2
    num_exp:       1
    time_per_exp:  1.6S
    s_to_n:        100
    priority:      1
    param_1:       STEP-PATT=3,
    param_2:       COMB=TWO,
    param_3:       STEP-TIME=0.2,
    comment_1:     COMPUTE AND APPLY NEW SPYBAL OFFSET.
    comment_2:     USE 1 COMB CYCLE = 2 REPEATS OF
    comment_3:     SUBSTEP PATTERN #3.

!

    linenum:       19.800
    targname:      HD93521
    config:        HRS
    opmode:        ACCUM
    aperture:      0.25
    sp_element:    MIRROR-A2
    num_exp:       1
    time_per_exp:  1.6S
    s_to_n:        100
    priority:      1
    param_1:       STEP-PATT=3,
    param_2:       COMB=TWO,
    param_3:       STEP-TIME=0.2,
    comment_1:     COMPUTE AND APPLY NEW SPYBAL OFFSET.
    comment_2:     USE 1 COMB CYCLE = 2 REPEATS OF
    comment_3:     SUBSTEP PATTERN #3.

!

    linenum:       20.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 20-22 NO GAP;

!

    linenum:       21.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G160M
    wavelength:    X1.27
    req_1:         ^

!

    linenum:       22.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       23.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    ^
    req_1:         SEQ 23-25 NO GAP;

!

    linenum:       24.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G160M
    wavelength:    X1.325
    req_1:         SEQ 23-25 NO GAP;

!

    linenum:       25.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       26.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 26-28 NO GAP;

!

    linenum:       27.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G160M
    wavelength:    X1.4
    time_per_exp:  X2
    req_1:         SEQ 26-28 NO GAP;

!

    linenum:       28.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       29.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    ^
    req_1:         SEQ 29-31 NO GAP;

!

    linenum:       30.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G160M
    wavelength:    X1.55
    time_per_exp:  X2
    req_1:         SEQ 29-31 NO GAP;

!

    linenum:       31.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       31.200
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    ^
    req_1:         SEQ 31.2-31.6 NO GAP

!

    linenum:       31.400
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G160M
    wavelength:    X1.655
    time_per_exp:  X2
    req_1:         SEQ 31.2-31.6 NO GAP

!

    linenum:       31.600
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       32.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    ^
    req_1:         SEQ 32-34 NO GAP;

!

    linenum:       33.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G160M
    wavelength:    X1.81
    time_per_exp:  X2
    req_1:         ^

!

    linenum:       34.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 32-34 NO GAP;

!

    linenum:       35.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 35-37 NO GAP;

!

    linenum:       36.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G200M
    wavelength:    X1.655
    time_per_exp:  X2
    req_1:         ^

!

    linenum:       37.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       38.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 38-40 NO GAP;

!

    linenum:       39.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G200M
    wavelength:    X1.82
    time_per_exp:  X2
    req_1:         ^

!

    linenum:       40.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 38-40 NO GAP;

!

    linenum:       41.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 41-43 NO GAP;

!

    linenum:       42.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G200M
    wavelength:    X2.02
    time_per_exp:  X2
    req_1:         ^

!

    linenum:       43.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       44.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 44-46 NO GAP;

!

    linenum:       45.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G200M
    wavelength:    X2.34
    time_per_exp:  X2
    req_1:         ^

!

    linenum:       46.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       47.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 47-49 NO GAP;

!

    linenum:       48.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G270M
    wavelength:    X2.02
    req_1:         ^

!

    linenum:       49.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       50.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 50-52 NO GAP;

!

    linenum:       51.000
    sequence_1:    USE
    sequence_2:    SPECT
    sp_element:    G270M
    wavelength:    X2.38
    req_1:         ^

!

    linenum:       52.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       53.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 53-55 NO GAP;

!

    linenum:       54.000
    sequence_1:    USE SPECT
    sp_element:    G270M
    wavelength:    X2.58
    req_1:         SEQ 53-55 NO GAP;

!

    linenum:       55.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       56.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    ^
    req_1:         SEQ 56-58 NO GAP;

!

    linenum:       57.000
    sequence_1:    USE SPECT
    sp_element:    G270M
    wavelength:    X2.80
    req_1:         ^

!

    linenum:       58.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^

!

    linenum:       59.000
    sequence_1:    USE
    sequence_2:    MAPLSA
    sp_element:    MIRROR-A2
    req_1:         SEQ 59-61 NO GAP;

!

    linenum:       60.000
    sequence_1:    USE SPECT
    sp_element:    G270M
    wavelength:    X2.85
    req_1:         SEQ 59-61 NO GAP;

!

    linenum:       61.000
    sequence_1:    USE
    sequence_2:    MAPSSA
    sp_element:    MIRROR-A2
    req_1:         ^
    comment_1:     END OF EXPOSURE LOGSHEETS

!
! end of exposure logsheet

! No scan data records found