coverpage:
  title_1:         LOCAL INTERSTELLAR MEDIUM AND D/H RATIO --
  title_2:         REPEAT ALPHA CEN A AND B -- HOPR 145
    sci_cat:       INTERSTELLAR MEDIUM
    sci_subcat:    ABSORPTION LINES
    proposal_for:  AUG/HRS
    cont_id:       3943
    pi_fname:      JEFFREY
    pi_mi:         L.
    pi_lname:      LINSKY
    pi_inst:       COLORADO, UNIVERSITY OF
    pi_country:    USA
    pi_phone:      (303)492-7838
    keywords_1:    HYDROGEN COLUMN DENSITY, DEUTERIUM COLUMN DENSITY,
    keywords_2:    DEUTERIUM ABUNDANCE
    hours_pri:     5.44
    num_pri:       2
    time_crit:     X
    pi_position:   ASTROPHYSICST

abstract:
    line_1:   We will observe with 80,000 spectral resolution the stellar
    line_2:   Lyman alpha emission line and interstellar hydrogen and
    line_3:   deuterium absorption towards local late-type stars to
    line_4:   derive the H and D column densities and D/H ratios along
    line_5:   different lines of sight. High resolution (90,000) spectra of the
    line_6:   MgII and FeII lines will help determine the interstellar
    line_7:   line broadening and whether material along each line of
    line_8:   sight has more than one velocity component. This is critical
    line_9:   for accurate measurements of D/H, because both the D and H
    line_10:  lines are on or near the flat part of the curve of growth.
    line_11:  Previous IUE and Copernicus observations, which had low
    line_12:  signal/noise and inadequate spectral resolution, provided
    line_13:  very crude D/H values and suggested that the D/H ratio may
    line_14:  vary within a few parsecs of the Sun. We will measure D/H
    line_15:  with at least one order of magnitude improved precision and
    line_16:  determine whether the proposed local variations are real. The
    line_17:  local value(s) of D/H may be extrapolated to zero metal
    line_18:  abundance to estimate the primordial value, which is
    line_19:  valuable for constraining cosmological models.
    line_20:  THIS IS A REPEAT OF FAILED CYCLE 2 OBSERVATIONS (HOPR 145).

general_form_proposers:
  lname:           JURA
    fname:         MICHAEL
    inst:          UC, LOS ANGELES
    country:       USA
  lname:           SAVAGE
    fname:         BLAIR
    mi:            D.
    inst:          WISCONSIN, UNIVERSITY OF
    country:       USA
  lname:           LINSKY
    fname:         JEFFREY
    mi:            L.
    inst:          COLORADO, UNIVERSITY OF
    country:       USA
  lname:           HEAP
    fname:         SARA
    mi:            R.
    inst:          NASA, GODDARD SPACE FLIGHT CENTER
    country:       USA
  lname:           LANDSMAN
    fname:         WAYNE
    inst:          NASA, GODDARD SPACE FLIGHT CENTER
    country:       USA
  lname:           SMITH
    fname:         ANDREW
    mi:            M.
    inst:          NASA, GODDARD SPACE FLIGHT CENTER
    country:       USA
  lname:           BROWN
    fname:         ALEXANDER
    inst:          COLORADO, UNIVERSITY OF
    country:       USA

general_form_text:

  question:    3
    section:   1
    line_1:We intend to observe 2 stars at 1.0E+5 resolution with the HRS in 3
    line_2:grating settings. For most observations a signal-to-noise of 100 is
    line_3:desired. This requirement requires special care for the Lyman alpha
    line_4:observations because of fixed pattern noise in the D1 detector. Our
    line_5:solution to this problem involves using several FP-SPLIT
    line_6:observations centred at different wavelengths.

  question:   4
    section:  1
    line_1:  The required spectral lines cannot be observed from the ground.

  question:    5
    section:   1
    line_1:There are preferred times of the year for each target so as to
    line_2:center the geocoronal emission in the Lyman alpha
    line_3:interstellar absorption core. These observing windows
    line_4:are given on the Target List.

  question:   7
    section:  1
  line_1:We have developed data analysis software to separate the interstellar
  line_2:absorption and stellar emission line features so as to determine column
  line_3:densities for interstellar H and D.

  question:   8
    section:  1
    line_1:

  question:   10
    section:   1
  line_1:Data analysis programs and postdoctoral research associates supported
  line_2:by the HRS GTO program.

  question:   12
    section:   1
    line_1:  Overhead estimates from RPSS

  question:  13
    section:  1
    line_1: We will observe the Lyman alpha line at 80,000 spectral resolution
    line_2: towards 2 late-type local stars. The purpose is to derive the
    line_3: hydrogen and deuterium column densities and D/H ratios along lines
    line_4: of sight towards nearby stars. High resolution (90,000) spectra of
    line_5: MgII and FeII lines will be obtained to help determine the
    line_6: broadening parameter and whether material along these lines of
    line_7: sight has more than one velocity component.

general_form_address:

  lname:           LINSKY
    fname:         JEFFREY
    mi:            L.
    category:      PI
    inst:          JILA, UNIVERSITY OF COLORADO
    addr_1:        CAMPUS BOX 440
    city:          BOULDER
    state:         CO
    zip:           80309
    country:       USA
    phone:         (303) 492-7838
    telex:         755842 JILA

fixed_targets:

    targnum:       2
    name_1:        HD128620
    name_2:        ALPHA-CEN-A
    descr_1:       A,137
    pos_1:         RA=14H 39M 18.0S +/- 0.01S,
    pos_2:         DEC=-60D 48' 55" +/- 0.1"
    equinox:       J1995.5
    pm_or_par:     Y
    pos_epoch_bj:  J
    pos_epoch_yr:  1995.50
    ra_pm_val:     -0.4932
    ra_pm_unct:    0.0010
    dec_pm_val:    0.7120
    dec_pm_unct:   0.0010
    an_prlx_val:   0.7500
    rv_or_z:       V=-25
    comment_1:     COORDINATES FOR 1995.5 WITH
    comment_2:     CORRECTION FOR ORBITAL MOTION
    comment_3:     AND PROPER MOTION ARE PROVIDED.
    comment_4:     ADJUST POSITION FOR PROPER
    comment_5:     MOTION RELATIVE TO 1995.5
    fluxnum_1:     1
    fluxval_1:     V=-0.01

!
    targnum:       3
    name_1:        HD128621
    name_2:        ALPHA-CEN-B
    descr_1:       A,139
    pos_1:         RA=14H 39M 16.6S +/- 0.01S,
    pos_2:         DEC=-60D 49' 09" +/- 0.1"
    equinox:       J1995.5
    pm_or_par:     Y
    pos_epoch_bj:  J
    pos_epoch_yr:  1995.50
    ra_pm_val:     -0.4932
    ra_pm_unct:    0.0010
    dec_pm_val:    0.7120
    dec_pm_unct:   0.0010
    an_prlx_val:   0.7500
    rv_or_z:       ^
    comment_1:     COORDINATES FOR 1995.5 WITH
    comment_2:     CORRECTION FOR ORBITAL MOTION
    comment_3:     AND PROPER MOTION ARE PROVIDED.
    comment_4:     ADJUST POSITION FOR PROPER
    comment_5:     MOTION RELATIVE TO 1995.5
    fluxnum_1:     1
    fluxval_1:     V=1.33

exposure_logsheet:

    linenum:       1.000
    sequence_1:    DEFINE
    sequence_2:    LISM1
    targname:      #
    config:        HRS
    opmode:        ACCUM
    aperture:      0.25
    sp_element:    ECH-A46
    wavelength:    1215.5
    num_exp:       #
    time_per_exp:  108.8S
    s_to_n:        100
    priority:      #
    param_1:       STEP-PATT=7,
    param_2:       FP-SPLIT=STD


!
    linenum:       5.000
    sequence_1:    DEFINE
    sequence_2:    LISM2
    targname:      ^
    config:        ^
    opmode:        ^
    aperture:      ^
    sp_element:    ECH-B20
    wavelength:    2800
    num_exp:       ^
    time_per_exp:  54.4S
    s_to_n:        ^
    priority:      ^
    param_1:       STEP-PATT=7


!
    linenum:       6.000
    sequence_1:    DEFINE
    sequence_2:    LISM3
    targname:      ^
    config:        ^
    opmode:        ^
    aperture:      ^
    sp_element:    ECH-B22
    wavelength:    2600
    num_exp:       ^
    time_per_exp:  54.4S
    s_to_n:        ^
    priority:      ^
    param_1:       STEP-PATT=7


!
    linenum:       11.000
    targname:      HD128620
    config:        HRS
    opmode:        ACQ
    aperture:      2.0
    sp_element:    MIRROR-N1
    num_exp:       1
    time_per_exp:  10.0S
    priority:      2
    param_1:       SEARCH-SIZE=5,
    param_2:       BRIGHT=RETURN
    req_1:         ONBOARD ACQ FOR 12;
    req_2:         ZERO-PHASE JD2446795.5 +/- 0.001D;
    req_3:         PERIOD 365.25D +/- 0.01D;
    req_4:         PHASE 0.64 +/- 0.33;
    req_5:         CYCLE 4/ 11-19;
    req_6:         GROUP 11-19 NO GAP;
    comment_1:     OBSERVE APR 14 - DEC 27


!
    linenum:       12.000
    targname:      HD128620
    config:        HRS
    opmode:        ACQ/PEAKUP
    aperture:      2.0
    sp_element:    MIRROR-N1
    num_exp:       1
    time_per_exp:  163.2S
    fluxnum_1:     1
    priority:      2
    req_1:         ONBOARD ACQ FOR 13-19
    comment_1:     STEP-TIME=1.6 SEC
    comment_2:     CENTER IN LSA AFTER NEW DEFCAL


!
    linenum:       13.00
    targname:      WAVE
    config:        HRS
    opmode:        ACCUM
    aperture:      SC2
    sp_element:    G140M
    wavelength:    1403.0
    num_exp:       1
    time_per_exp:  64S
    priority:      2
    param_1:       STEP-PATT=3
    req_1:         CALIB FOR 14 NO SLEW;
    req_2:         SEQ 13.0-14.0 NO GAP


!
    linenum:       14.000
    targname:      HD128620
    config:        ^
    opmode:        ^
    aperture:      2.0
    sp_element:    ^
    wavelength:    1403.0
    num_exp:       2
    time_per_exp:  245S
    priority:      ^
    param_1:       STEP-PATT=5


!
    linenum:       14.500
    targname:      HD128620
    config:        HRS
    opmode:        ACCUM
    aperture:      2.0
    sp_element:    G140L
    wavelength:    1346
    num_exp:       1
    time_per_exp:  191S
    priority:      1
    param_1:       STEP-PATT=5


!
    linenum:       15.000
    targname:      WAVE
    config:        ^
    opmode:        ACCUM
    aperture:      SC2
    sp_element:    ECH-A46
    wavelength:    1215.5
    num_exp:       1
    time_per_exp:  64S
    param_1:       STEP-PATT=3
    priority:      ^
    req_1:         CALIB FOR 16 NO SLEW;
    req_2:         SEQ 15-16 NO GAP

!
    linenum:       16.000
    sequence_1:    USE
    sequence_2:    LISM1
    targname:      HD128620
    num_exp:       3
    time_per_exp:  X9
    priority:      ^


!
    linenum:       17.000
    targname:      WAVE
    config:        HRS
    opmode:        ACCUM
    aperture:      SC2
    sp_element:    ECH-B20
    wavelength:    2800
    num_exp:       1
    time_per_exp:  32S
    param_1:       STEP-PATT=3
    priority:      ^
    req_1:         CALIB FOR 17.5 NO SLEW;
    req_2:         SEQ 17.0-17.5 NO GAP


!
    linenum:       17.500
    sequence_1:    USE
    sequence_2:    LISM2
    targname:      HD128620
    num_exp:       1
    time_per_exp:  X9
    priority:      ^


!
    linenum:       18.000
    targname:      WAVE
    config:        HRS
    opmode:        ACCUM
    aperture:      SC2
    sp_element:    ECH-B22
    wavelength:    2600
    num_exp:       1
    time_per_exp:  32S
    param_1:       STEP-PATT=3
    priority:      2
    req_1:         CALIB FOR 19 NO SLEW;
    req_2:         SEQ 18-19 NO GAP


!
    linenum:       19.000
    sequence_1:    USE
    sequence_2:    LISM3
    targname:      HD128620
    num_exp:       1
    time_per_exp:  X12
    priority:      2


!
    linenum:       20.000
    targname:      HD128621
    config:        HRS
    opmode:        ACQ
    aperture:      2.0
    sp_element:    MIRROR-A2
    num_exp:       1
    time_per_exp:  5.0S
    priority:      2
    param_1:       SEARCH-SIZE=5,
    param_2:       BRIGHT=RETURN
    req_1:         ONBOARD ACQ FOR 21.0;
    req_2:         PHASE 0.64 +/- 0.33 OF REF 11.0;
    req_3:         CYCLE 4/ 20-22.5;
    req_4:         GROUP 20-22.5 NO GAP;
    comment_1:     OBSERVE APR 14 - DEC 27.


!
    linenum:       21.00
    targname:      HD128621
    config:        HRS
    opmode:        ACQ/PEAKUP
    aperture:      2.0
    sp_element:    MIRROR-A2
    num_exp:       1
    time_per_exp:  163.2S
    fluxnum_1:     1
    priority:      2
    req_1:         ONBOARD ACQ FOR 21.1-22.5
    comment_1:     STEP-TIME=1.6 SEC
    comment_2:     CENTER IN LSA AFTER NEW DEFCAL


!
    linenum:       21.100
    targname:      WAVE
    config:        HRS
    opmode:        ACCUM
    aperture:      SC2
    sp_element:    ECH-B20
    wavelength:    2800
    num_exp:       1
    time_per_exp:  32S
    param_1:       STEP-PATT=3
    priority:      2
    req_1:         CALIB FOR 21.2 NO SLEW;
    req_2:         SEQ 21.1-21.2  NO GAP


!
    linenum:       21.200
    sequence_1:    USE
    sequence_2:    LISM2
    targname:      HD128621
    num_exp:       1
    time_per_exp:  X13
    priority:      2


!
    linenum:       21.30
    targname:      WAVE
    config:        HRS
    opmode:        ACCUM
    aperture:      SC2
    sp_element:    G140M
    wavelength:    1403.0
    num_exp:       1
    time_per_exp:  64S
    priority:      2
    param_1:       STEP-PATT=3
    req_1:         CALIB FOR 21.6 NO SLEW;
    req_2:         SEQ 21.3-21.6 NO GAP


!
    linenum:       21.600
    targname:      HD128621
    config:        ^
    opmode:        ^
    aperture:      2.0
    sp_element:    ^
    wavelength:    1403.0
    num_exp:       2
    time_per_exp:  354S
    priority:      ^
    param_1:       STEP-PATT=5


!
    linenum:       22.000
    targname:      WAVE
    config:        HRS
    opmode:        ACCUM
    aperture:      SC2
    sp_element:    ECH-A46
    wavelength:    1215.5
    num_exp:       1
    time_per_exp:  64S
    param_1:       STEP-PATT=3
    priority:      2
    req_1:         CALIB FOR 22.5 NO SLEW;
    req_2:         SEQ 22.0-22.5 NO GAP
    comment_1:     NO CARROUSEL MOTION
    comment_2:     BETWEEN 22.0 AND 22.5


!
    linenum:       22.500
    sequence_1:    USE
    sequence_2:    LISM1
    targname:      HD128621
    num_exp:       3
    time_per_exp:  X10
    priority:      2

!

!~~~RPSS~~~,HRS,3943cvz.prop, 2-SEP-1994 18:03