!   $Id: 5581,v 9.1 1995/06/07 12:49:34 pepsa Exp $

coverpage:

  title_1:         TIME-RESOLVED SPECTROSCOPY OF THE PULSATING DA WHITE DWARF
    title_2:       DN DRACONIS: CYCLE4 MEDIUM
    sci_cat:       HOT STARS
    sci_subcat:    WHITE DWARFS
    proposal_for:  GO/DD
    pi_fname:      R. EDWARD
    pi_lname:      NATHER
    pi_inst:       UNIVERSITY OF TEXAS
    pi_country:    USA
    pi_phone:      512-471-3000
    hours_pri:     7.60
    num_pri:       1
    fos:           Y
    time_crit:     Y
! end of coverpage

abstract:

    line_1:        The pulsation modes of white dwarfs are identified by indices (l,m,k).  The
    line_2:        mode indices have not been identified with certainty for any pulsation of any
    line_3:        DA white dwarf.  If the index l of their pulsations could be measured, the
    line_4:        masses of their outer hydrogen layers could be determined.  This is an
    line_5:        important result because the thickness of the hydrogen layer directly tests
    line_6:        models for the ejection of planetary nebulae and theories for the spectral
    line_7:        evolution of white dwarfs.  The amplitudes of the pulsations of DA white dwarfs
    line_8:        depend strongly on l at wavelengths less than 3000 A.  Time resolved
    line_9:        spectroscopy of the pulsations at ultraviolet wavelengths will, therefore,
    line_10:       allow a direct determination of l.
    line_11:       DN Draconis (= G226-29) is a pulsating DA white dwarf.  Three of its pulsation
    line_12:       modes are simultaneously excited at periods near 109.3 s; they add together in
    line_13:       the light curve to give a beat period of 17.2 hr.  We will use the FOS with the
    line_14:       blue Digicon and the G160L grating in RAPID readout mode to obtain ultraviolet
    line_15:       spectrophotometry of G226-29 with a sampling interval of 10 seconds.  We will
    line_16:       observe G226-29 for 11 consecutive orbits covering one cycle of its 17.2 hour
    line_17:       beat period, accumulating about 7.2 hours of on-target data.  Power spectra of
    line_18:       the flux variations will yield wavelength-dependent amplitudes for each
    line_19:       pulsation and thus the value of l for each pulsation.

!
! end of abstract

general_form_proposers:

  lname:           NATHER
    fname:         R. EDWARD
    inst:          3550
    country:       USA
    esa:           N

!

  lname:           ROBINSON
    fname:         EDWARD
    mi:            L
    inst:          3550
    country:       USA
    esa:           N

!

  lname:           KEPLER
    fname:         S.
    mi:            O
    inst:          4460
    country:       BRAZIL
    esa:           N

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        The magnitude of DN Dra places it perilously close to the bright limit
    line_2:        for ACQ/BINARY.  To insure that we acquire DN Dra without going over
    line_3:        the bright limit, we are using ACQ/PEAK instead of ACQ/BINARY.
    line_4:        Because we will be doing spectrophotometry and will need good
    line_5:        centering in the 1.0 aperture, we are using a three-stage peakup.
    line_6:        DN Dra does not vary by enough to confuse the ACQ/PEAK centering.
    line_8:        DN Dra pulsates in three pulsation modes simultaneously.  All three
    line_9:        have periods near 109 seconds.  We are using the RAPID readout mode
    line_10:       with a READ-TIME = 10 seconds in order to fully resolve the
    line_11:       pulsations; the signal-to-noise ratio of the data is not relevant for
    line_12:       the choice of READ-TIME.  A READ-TIME shorter than 10 seconds is not
    line_13:       necessary and would add to the data management difficulties.

!

  question:        3
    section:       2
    line_1:        The three pulsations beat together to give a beat period of 17.2068
    line_2:        hours.  To differentiate the three pulsations it is necessary to
    line_3:        sample a substantial fraction of the beat period.  The beat period is
    line_4:        known accurately and the beat cycle repeats exactly, so it is not
    line_5:        necessary to observe a beat cycle all at once.  There is a great
    line_6:        advantage to breaking the observation into parts because the
    line_7:        individual parts will be much easier to schedule than one large
    line_8:        observation would be (indeed, we have been told that it is impossible
    line_9:        to schedule an unbroken observation lasting 17.2 hours).  We have,
    line_10:       therefore, broken the observation into 6 parts, each part sampling a
    line_11:       different section of the beat cycle.
    line_13:       The sequence consists of
    line_14:       1) Acquire DN Dra with the ACQ/PEAK mode, using a triple peakup.
    line_15:       2) Observe DN DRA with the FOS/BLUE in the RAPID mode with
    line_16:       READ-TIME= 10 seconds and a total exposure of 2.854 hours.

!

  question:        4
    section:       1
    line_1:        The only spacecraft that can obtain ultraviolet spectra with sampling
    line_2:        intervals short enough to resolve the pulsations of DA white dwarfs is
    line_3:        HST.  The schemes that have been used to resolve the pulsations of
    line_4:        white dwarfs with IUE by "nodding" the spacecraft in time with the
    line_5:        brightness variations do not really work because the white dwarfs are
    line_6:        pulsating in several modes simultaneously (they are multiperiodic).
    line_7:        The resulting observations "scramble" the pulsation modes and cannot be
    line_8:        used to determine l by our method.
    line_10:       We need to measure the relative amplitudes of the pulsations to one
    line_11:       percent or better to distinguish the value of l.  We will do this by
    line_12:       taking power spectra of the flux variations at each wavelength in the
    line_13:       time-resolved FOS spectra.  We will easily accumulate enough photons
    line_14:       to achieve this level of accuracy.  A more interesting question is
    line_15:       whether spurious periodicities will be introduced into the data by,
    line_16:       for example, HST jitter.  Observations with the HST high speed
    line_17:       photometer have demonstrated that any spurious periodicities near 109
    line_18:       seconds have amplitudes less than 0.1% (Taylor et al 1993, Ap. J.,
    line_19:       submitted).  This level of precision cannot be obtained with IUE.
    line_21:       Extensive high-speed photometry of G226-29 has been obtained from the
    line_22:       ground and its light curve has been decomposed into its constituent
    line_23:       pulsations (Kepler, Robinson, and Nather 1983, Ap.J., 271, 744).

!

  question:        4
    section:       2
    line_1:        G226-29 was observed with the Whole Earth Telescope in 1992.  G226-29
    line_2:        has been observed with IUE (e.g., Kepler and Nelen 1993, A.J., 105,
    line_3:        608).  The IUE observations yielded an effective temperature for
    line_4:        G226-29.  We expect, however, that the HST observations will allow us
    line_5:        to give an improved value for the effective temperature.

!

  question:        5
    section:       1
    line_1:        It is NOT necessary to observe the 6 individual parts of this
    line_2:        observation close together in time nor in any special sequence.  They
    line_3:        can be scheduled as 6 independent observations.  They should, however,
    line_4:        be scheduled within one year of each other.
    line_6:        This project is extremely inefficient unless it is scheduled in the
    line_7:        Continuous Viewing Zone, so we have been directed to use only CVZ
    line_8:        time.  We have been allocated 7.6 hours of CVZ spacecraft time.  With
    line_9:        the factor of 3 adjustment, this becomes 22.8 hours of spacecraft time
    line_10:       reported by the RPSS resource estimator.
    line_12:       It is acceptable to break the observations into more than 6 parts if
    line_13:       necessary to schedule the observations.  The only loss would be a
    line_14:       small decrease in efficiency.  Specifically, in going from 6 to 7
    line_15:       parts, the efficiency would drop from 75% to 71%.

!

  question:        6
    section:       1
    line_1:        No special calibrations are required.

!


!

  question:        8
    section:       1
    line_1:        None.

!

  question:        9
    section:       1
    line_1:

!

  question:        10
    section:       1
    line_1:        The University of Texas will provide office space, computer facilities
    line_2:        (SPARCstation 2 and 10 workstations), and library facilities in the
    line_3:        Department of Astronomy.  We will attempt to acquire contemporaneous
    line_4:        observations of G226-29 at McDonald Observatory, which is owned and
    line_5:        operated by the University of Texas.

!
!end of general form text

general_form_address:

  lname:           NATHER
    fname:         R. EDWARD
    category:      PI
    inst:          3550
    addr_1:        DEPARTMENT OF ASTRONOMY
    addr_2:        UNVERSITY OF TEXAS
    city:          AUSTIN
    state:         TX
    zip:           78712
    country:       USA
    phone:         512-471-3000
    telex:         nather@astro.as.utexas.edu

!

  lname:           ROBINSON
    fname:         EDWARD
    mi:            L
    category:      CON
    inst:          3550
    addr_1:        DEPARTMENT OF ASTRONOMY
    addr_2:        UNIVERSITY OF TEXAS
    city:          AUSTIN
    state:         TX
    zip:           78712
    country:       USA
    phone:         512-471-3000
    telex:         elr@astro.as.utexas.edu

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        DN-DRA
    name_2:        G226-29
    name_3:        WD1647+591
    descr_1:       A,120,177
    pos_1:         PLATE-ID = 00T2,
    pos_2:         RA = 16H 48M 25.28S +/- 0.03S,
    pos_3:         DEC = +59D 03' 27.5" +/- 0.2"
    equinox:       J2000
    pm_or_par:     Y
    pos_epoch_bj:  B
    pos_epoch_yr:  1983.61
    ra_pm_val:     0.018400
    ra_pm_unct:    0.000200
    dec_pm_val:    -0.3030
    dec_pm_unct:   0.0040
    an_prlx_val:   0.0800
    an_prlx_unct:  0.0040
    comment_1:     THIS IS A CVZ TARGET
    fluxnum_1:     1
    fluxval_1:     V = 12.24 +/- 0.02
    fluxnum_2:     2
    fluxval_2:     B-V = 0.16 +/- 0.02
    fluxnum_3:     3
    fluxval_3:     TYPE = DA4
    fluxnum_4:     4
    fluxval_4:     E(B-V) = 0.00

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.100
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      4.3
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-Y=1.204
    param_2:       SEARCH-SIZE-X=1
    param_3:       SEARCH-SIZE-Y=3
    req_1:         CYCLE 4 / 1.1-6.4;
    req_2:         ONBOARD ACQ FOR 1.2
    comment_1:     BRIGHT VARIABLE STAR.
    comment_2:     UV FLUCTUATIONS EXPECTED.
    comment_3:     THE OBSERVATIONS MUST BE MADE IN
    comment_4:     THE CVZ.

!

    linenum:       1.200
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      1.0
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.602
    param_2:       SCAN-STEP-Y=0.602
    param_3:       SEARCH-SIZE-X=6
    param_4:       SEARCH-SIZE-Y=2
    req_1:         ONBOARD ACQ FOR 1.3

!

    linenum:       1.300
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      0.5
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.30
    param_2:       SCAN-STEP-Y=0.30
    param_3:       SEARCH-SIZE-X=3
    param_4:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 1.4

!

    linenum:       1.400
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        RAPID
    aperture:      1.0
    sp_element:    G160L
    num_exp:       1
    time_per_exp:  171.5M
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       READ-TIME= 10.0
    req_1:         ZERO-PHASE JD2449400.0 +/- 0.0D;
    req_2:         PERIOD 0.71695D +/- 0.00002D;
    req_3:         PHASE 0.00 +/- 0.05
    comment_1:     THE TOTAL INTEGRATION
    comment_2:     TIME IS SET BY THE NEED TO COVER THE
    comment_3:     ENTIRE PULSATION BEAT PERIOD, SO S/N
    comment_4:     IS NOT RELEVANT.

!

    linenum:       2.100
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      4.3
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-Y=1.204
    param_2:       SEARCH-SIZE-X=1
    param_3:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 2.2
    comment_1:     BRIGHT VARIABLE STAR.
    comment_2:     UV FLUCTUATIONS EXPECTED.
    comment_3:     THE OBSERVATIONS MUST BE MADE IN
    comment_4:     THE CVZ.

!

    linenum:       2.200
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      1.0
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.602
    param_2:       SCAN-STEP-Y=0.301
    param_3:       SEARCH-SIZE-X=6
    param_4:       SEARCH-SIZE-Y=2
    req_1:         ONBOARD ACQ FOR 2.3

!

    linenum:       2.300
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      0.5
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.30
    param_2:       SCAN-STEP-Y=0.30
    param_3:       SEARCH-SIZE-X=3
    param_4:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 2.4

!

    linenum:       2.400
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        RAPID
    aperture:      1.0
    sp_element:    G160L
    num_exp:       1
    time_per_exp:  171.5M
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       READ-TIME= 10.0
    req_1:         PHASE 0.167 +/- 0.05 OF REF 1.4
    comment_1:     THE TOTAL INTEGRATION
    comment_2:     TIME IS SET BY THE NEED TO COVER THE
    comment_3:     ENTIRE PULSATION BEAT PERIOD, SO S/N
    comment_4:     IS NOT RELEVANT.

!

    linenum:       3.100
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      4.3
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-Y=1.204
    param_2:       SEARCH-SIZE-X=1
    param_3:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 3.2
    comment_1:     BRIGHT VARIABLE STAR.
    comment_2:     UV FLUCTUATIONS EXPECTED.
    comment_3:     THE OBSERVATIONS MUST BE MADE IN
    comment_4:     THE CVZ.

!

    linenum:       3.200
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      1.0
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.602
    param_2:       SCAN-STEP-Y=0.301
    param_3:       SEARCH-SIZE-X=6
    param_4:       SEARCH-SIZE-Y=2
    req_1:         ONBOARD ACQ FOR 3.3

!

    linenum:       3.300
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      0.5
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.30
    param_2:       SCAN-STEP-Y=0.30
    param_3:       SEARCH-SIZE-X=3
    param_4:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 3.4

!

    linenum:       3.400
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        RAPID
    aperture:      1.0
    sp_element:    G160L
    num_exp:       1
    time_per_exp:  171.5M
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       READ-TIME= 10.0
    req_1:         PHASE 0.333 +/- 0.05 OF REF 1.4
    comment_1:     THE TOTAL INTEGRATION
    comment_2:     TIME IS SET BY THE NEED TO COVER THE
    comment_3:     ENTIRE PULSATION BEAT PERIOD, SO S/N
    comment_4:     IS NOT RELEVANT.

!

    linenum:       4.100
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      4.3
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-Y=1.204
    param_2:       SEARCH-SIZE-X=1
    param_3:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 4.2
    comment_1:     BRIGHT VARIABLE STAR.
    comment_2:     UV FLUCTUATIONS EXPECTED.
    comment_3:     THE OBSERVATIONS MUST BE MADE IN
    comment_4:     THE CVZ.

!

    linenum:       4.200
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      1.0
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.602
    param_2:       SCAN-STEP-Y=0.301
    param_3:       SEARCH-SIZE-X=6
    param_4:       SEARCH-SIZE-Y=2
    req_1:         ONBOARD ACQ FOR 4.3

!

    linenum:       4.300
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      0.5
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.30
    param_2:       SCAN-STEP-Y=0.30
    param_3:       SEARCH-SIZE-X=3
    param_4:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 4.4

!

    linenum:       4.400
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        RAPID
    aperture:      1.0
    sp_element:    G160L
    num_exp:       1
    time_per_exp:  171.5M
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       READ-TIME= 10.0
    req_1:         PHASE 0.5 +/- 0.05 OF REF 1.4
    comment_1:     THE TOTAL INTEGRATION
    comment_2:     TIME IS SET BY THE NEED TO COVER THE
    comment_3:     ENTIRE PULSATION BEAT PERIOD, SO S/N
    comment_4:     IS NOT RELEVANT.

!

    linenum:       5.100
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      4.3
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-Y=1.204
    param_2:       SEARCH-SIZE-X=1
    param_3:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 5.2
    comment_1:     BRIGHT VARIABLE STAR.
    comment_2:     UV FLUCTUATIONS EXPECTED.
    comment_3:     THE OBSERVATIONS MUST BE MADE IN
    comment_4:     THE CVZ.

!

    linenum:       5.200
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      1.0
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.602
    param_2:       SCAN-STEP-Y=0.301
    param_3:       SEARCH-SIZE-X=6
    param_4:       SEARCH-SIZE-Y=2
    req_1:         ONBOARD ACQ FOR 5.3

!

    linenum:       5.300
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      0.5
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.30
    param_2:       SCAN-STEP-Y=0.30
    param_3:       SEARCH-SIZE-X=3
    param_4:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 5.4

!

    linenum:       5.400
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        RAPID
    aperture:      1.0
    sp_element:    G160L
    num_exp:       1
    time_per_exp:  171.5M
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       READ-TIME= 10.0
    req_1:         PHASE 0.667 +/- 0.05 OF REF 1.4
    comment_1:     THE TOTAL INTEGRATION
    comment_2:     TIME IS SET BY THE NEED TO COVER THE
    comment_3:     ENTIRE PULSATION BEAT PERIOD, SO S/N
    comment_4:     IS NOT RELEVANT.

!

    linenum:       6.100
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      4.3
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-Y=1.204
    param_2:       SEARCH-SIZE-X=1
    param_3:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 6.2
    comment_1:     BRIGHT VARIABLE STAR.
    comment_2:     UV FLUCTUATIONS EXPECTED.
    comment_3:     THE OBSERVATIONS MUST BE MADE IN
    comment_4:     THE CVZ.

!

    linenum:       6.200
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      1.0
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.602
    param_2:       SCAN-STEP-Y=0.301
    param_3:       SEARCH-SIZE-X=6
    param_4:       SEARCH-SIZE-Y=2
    req_1:         ONBOARD ACQ FOR 6.3

!

    linenum:       6.300
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      0.5
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.30
    param_2:       SCAN-STEP-Y=0.30
    param_3:       SEARCH-SIZE-X=3
    param_4:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 6.35

!

    linenum:       6.350
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      0.3
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.172
    param_2:       SCAN-STEP-Y=0.172
    param_3:       SEARCH-SIZE-X=3
    param_4:       SEARCH-SIZE-Y=3
    req_1:         ONBOARD ACQ FOR 6.37

!

    linenum:       6.370
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        ACQ/PEAK
    aperture:      0.3
    sp_element:    G190H
    num_exp:       1
    time_per_exp:  10.0S
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       SCAN-STEP-X=0.17
    param_2:       SCAN-STEP-Y=0.17
    param_3:       SEARCH-SIZE-X=4
    param_4:       SEARCH-SIZE-Y=4
    req_1:         ONBOARD ACQ FOR 6.4

!

    linenum:       6.400
    targname:      DN-DRA
    config:        FOS/BL
    opmode:        RAPID
    aperture:      1.0-PAIR-A
    sp_element:    G160L
    num_exp:       1
    time_per_exp:  171.5M
    fluxnum_1:     1,
    fluxnum_2:     2,
    fluxnum_3:     3,
    fluxnum_4:     4
    priority:      1
    param_1:       READ-TIME= 10.0
    param_2:       STEP-PATT=SINGLE
    req_1:         PHASE 0.833 +/- 0.05 OF REF 1.4
    comment_1:     THE TOTAL INTEGRATION
    comment_2:     TIME IS SET BY THE NEED TO COVER THE
    comment_3:     ENTIRE PULSATION BEAT PERIOD, SO S/N
    comment_4:     IS NOT RELEVANT.

!
! end of exposure logsheet

! No scan data records found