!  File:  3142C.PROP
!  Database:  PEPDB
!  Date:  18-FEB-1994:19:06:12

coverpage:

  title_1:         OTA BAFFLE REJECTION MEASUREMENT-REVISED
    proposal_for:  SV/OLT
    pi_fname:      PIERRE
    pi_lname:      BELY
    pi_inst:       ST SCI
    pi_country:    USA
    pi_phone:      (301)338-4780
    hours_pri:     3.00
    num_pri:       5
    wf_pc:         Y
    time_crit:     Y
! end of coverpage

abstract:

    line_1:        Test Objective:
    line_3:        Measure the effectiveness of the HST OTA baffle system in
    line_4:        rejecting light of nearby bright objects. Verify that the
    line_5:        stray light tolerance (23rd magnitude/square arcsec at the
    line_6:        focal plane) is met with the present viewing limits
    line_7:        established for the sun (>50 degrees), moon (>15 degrees)
    line_8:        and the bright earth limb (>80 degrees) from the
    line_9:        OTA axis.

!
! end of abstract

general_form_proposers:

  lname:           BELY
    fname:         PIERRE
    inst:          ST SCI
    country:       USA
    esa:           Y

!

  lname:           LUPIE
    fname:         OLIVIA
    inst:          ST SCI
    country:       USA

!

  lname:           STOCKMAN
    fname:         PETER
    inst:          ST SCI
    country:       USA
    esa:           Y

!

  lname:           JAYROE
    fname:         ROBERT
    inst:          MSFC
    country:       USA

!

  lname:           LUBENOW
    fname:         ANDY
    inst:          ST SCI
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        2
    section:       1
    line_1:        ****Test Description:
    line_3:        In order to realize the full potential of HST for the
    line_4:        detection of faint astronomical sources, stray light must be
    line_5:        negligible. Extensive study and modelling resulted in the
    line_6:        state of the art baffling system on HST. Testing the effectiveness
    line_7:        of the system is not practical on the ground prior to launch. This
    line_8:        test will measure the overall effectiveness of the off-axis
    line_9:        rejection capability of bright sources at large angles
    line_10:       while in orbit and verify the 'level-1' stray light requirement.
    line_12:       Estimated test duration:
    line_13:       Total exposure time= 3 hours, Total w/overhead= 5.5 hours.

!

  question:        3
    section:       1
    line_1:        Use WFC in 2x2 SUM mode as an area photometer to measure the
    line_2:        scattered light background in several filters and at several
    line_3:        distances from the full moon and at  50 degrees from the sun
    line_4:        but 3 different roll orientations.
    line_5:        1) OFFSETS FROM THE FULL MOON: A series of exposures in combinations of
    line_6:        filters VUV,U,V,and R filters at each of four offset
    line_7:        pointings: 4,8,20, and 30 degrees.
    line_8:        2) OFFSETS FROM NEW MOON (two weeks later): at SAME POINTING as (1),
    line_9:        repeat the 20 and 30 degree exposures for background subtraction.
    line_10:       No background exposures are needed for the
    line_11:       4 and 8 degree offsets because of the brightness of the stray light.

!

  question:        3
    section:       2
    line_1:        WFC CCDs must be preflashed before all low light-level exposures.
    line_2:        WPC UV flooding is required prior to the start of the test but
    line_3:        not during any portion of the test. The quantum efficiency
    line_4:        during this test should be worse than 90% that at the time of the
    line_5:        flood. Purges are included for those frames with t_exp => 1000S
    line_6:        for possible over-exposure by spurious stars. Special
    line_7:        Requirement SEQ NO GAP is used for those groups of exposures
    line_8:        containing a purge to insure the purge
    line_9:        occurs at end of sequence; otherwise 'GROUP' is acceptable.

!

  question:        3
    section:       3
    line_1:        *****TEST STEPS - Easy to Read summary of Exposures:
    line_2:        WFPC Configuration: IMAGE,ALL,2x2 SUM Mode.
    line_4:        ***SEQUENCE 1 - OFFSETS FROM FULL MOON *****
    line_6:        Exp line 10: Preflash, 4 deg, VUV F284W, exp time 200s.
    line_7:        Exp line 11:           4 deg,  UV F336W, exp time 140s.
    line_8:        Exp line 12:           4 deg,   V F569W, exp time  10s.
    line_9:        Exp line 13:           4 deg,   R F675W, exp time  10s.
    line_10:       Exp line 20: Preflash, 8 deg, VUV F284W, exp time 400s.
    line_11:       Exp line 21:           8 deg,  UV F336W, exp time 100s.
    line_12:       Exp line 22:           8 deg,   V F569W, exp time  60s.
    line_13:       Exp line 23:           8 deg,   R F675W, exp time  30s.
    line_15:       Exp line 30: Preflash, 20 deg,   R F675W, exp time  200s.
    line_16:       Exp line 31: Preflash, 20 deg,   V F569W, exp time  400s.
    line_17:       Exp line 32: Preflash, 20 deg,  UV F336W, exp time 1000s, Purge.
    line_18:       Exp line 40: Preflash, 30 deg,   V F569W, exp time 1260s, Purge.

!

  question:        3
    section:       4
    line_1:        SEQUENCE 2 NEW MOON BACKGROUNDS
    line_3:        Exp line 50: Preflash, 20 deg,  R F675W, exp time  200s.
    line_4:        Exp line 51: Preflash, 20 deg,  V F569W, exp time  400s.
    line_5:        Exp line 52: Preflash, 20 deg,  UV F336W, exp time 1000s,purge.
    line_6:        Exp line 60: Preflash, 30 deg,   V F569W, exp time  1260s,purge.
    line_7:        SEQUENCE 3 OFFSET FROM SUN

!

  question:        4
    section:       1
    line_1:        Submitted as an Observatory Level Test

!

  question:        5
    section:       1
    line_1:        SCHEDULING REQUIREMENTS:
    line_3:        1 - GYRO Tracking.
    line_8:        3 - UV FLOOD Required prior to test; WFC quantum efficiency 90% that
    line_9:        at time of UV flood.
    line_10:       4 - Because of long exposures, schedule test after TEC turn-on.
    line_11:       5 - Exp Lines 10-40 require Full Moon (+/- 0.5 days)
    line_12:       6 - Exp Lines 50-60 require New Moon (+/- 4.0  days). Perform
    line_13:       within two weeks of lines 10-40.
    line_16:       8 - Order of Sequences 1 and 2 may be interchanged to
    line_17:       accommodate lunar phase requirements.
    line_18:       9 - No observations during SAA passage.
    line_19:       10 - FGS to WFPC not required; lambda/8 acceptable.

!

  question:        6
    section:       1
    line_1:        Test Repetition: none.

!

  question:        7
    section:       1
    line_1:        Real Time Data Analysis Requirements:
    line_2:        Not anticipated at this time.
    line_3:        Offline Data Analysis Plans:
    line_4:        Dedicated STSDAS programs to determine the incident
    line_5:        flux attenuation factors as a function of the
    line_6:        off-axis angle and wavelength. Description of
    line_7:        procedures are available in internal STScI documentation.

!

  question:        8
    section:       1
    line_1:        ***SIGNIFICANT AMOUNTS OF STRAY LIGHT IN FOCAL PLANE
    line_2:        DURING THIS OLT.****
    line_3:        ***Possible saturation by background stars****

!
!end of general form text

general_form_address:

  lname:           LUPIE
    fname:         OLIVIA
    category:      CON
    inst:          ST SCI
    addr_1:        3700 SAN MARTIN DRIVE
    city:          BALTIMORE
    state:         MD
    zip:           21218
    country:       USA

!

  lname:           PIERRE
    fname:         BELY
    category:      PI
    inst:          ST SCI
    addr_1:        3700 SAN MARTIN DRIVE
    city:          BALTIMORE
    state:         MD
    zip:           21218
    country:       USA

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        MOON-04
    descr_1:       OFFSET TARGET 4 DEGREES
    descr_2:       FROM MOON, NORTH.
    pos_1:         RA= 159.7803 D +/- 0.01D,
    pos_2:         DEC= 8.7983 D +/- 0.01D
    equinox:       2000
    fluxnum_1:     1
    fluxval_1:     SURF-CONT-BKG(5600)=74+/-10 E-17

!

    targnum:       2
    name_1:        MOON-08
    descr_1:       OFFSET TARGET 8 DEGREES
    descr_2:       FROM MOON, NORTH.
    pos_1:         RA= 159.7803 D +/- 0.01D,
    pos_2:         DEC= 12.7983 D +/- 0.01D
    equinox:       2000
    fluxnum_1:     1
    fluxval_1:     SURF-CONT-BKG(5600)=74+/-10 E-18

!

    targnum:       3
    name_1:        MOON-20
    descr_1:       OFFSET TARGET 20 DEGREES
    descr_2:       FROM MOON, NORTH.
    pos_1:         RA= 159.7803 D +/- 0.01D,
    pos_2:         DEC= 24.7983 D +/- 0.01D
    equinox:       2000
    fluxnum_1:     1
    fluxval_1:     SURF-CONT-BKG(5600)=74+/-10E-20

!

    targnum:       4
    name_1:        MOON-30
    descr_1:       OFFSET TARGET 30 DEGREES
    descr_2:       FROM MOON, NORTH.
    pos_1:         RA= 159.7803 D +/- 0.01D,
    pos_2:         DEC= 34.7983 D +/- 0.01D
    equinox:       2000
    fluxnum_1:     1
    fluxval_1:     SURF-CONT-BKG(5600)=74+/-10E-23

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    sequence_1:    DEFINE VUV
    targname:      #
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F284W
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    param_1:       SUM=2X2

!

    linenum:       2.000
    sequence_1:    DEFINE UV
    targname:      #
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F336W
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    param_1:       SUM=2X2

!

    linenum:       3.000
    sequence_1:    DEFINE V
    targname:      #
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F569W
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    param_1:       SUM=2X2

!

    linenum:       4.000
    sequence_1:    DEFINE R
    targname:      #
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F675W
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    param_1:       SUM=2X2

!

    linenum:       5.000
    sequence_1:    DEFINE
    sequence_2:    VUV-PF
    targname:      #
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F284W
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    param_1:       SUM=2X2,
    param_2:       PRE-FLASH=YES

!

    linenum:       6.000
    sequence_1:    DEFINE
    sequence_2:    UV-PF
    targname:      #
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F336W
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    param_1:       #

!

    linenum:       7.000
    sequence_1:    DEFINE
    sequence_2:    V-PF
    targname:      #
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F569W
    wavelength:    ^
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    param_1:       #

!

    linenum:       8.000
    sequence_1:    DEFINE
    sequence_2:    R-PF
    targname:      #
    config:        WFC
    opmode:        IMAGE
    aperture:      ALL
    sp_element:    F675W
    wavelength:    ^
    num_exp:       1
    time_per_exp:  1S
    fluxnum_1:     1
    priority:      1
    param_1:       SUM=2X2,
    param_2:       PRE-FLASH=YES
    req_1:         ^

!

    linenum:       10.000
    sequence_1:    USE
    sequence_2:    VUV-PF
    targname:      MOON-04
    time_per_exp:  X200
    req_1:         GROUP 10-60 WITHIN
    req_2:         16D; CYCLE 0 /10-60;
    req_3:         GUIDE TOL 30" /10-60;
    req_4:         GROUP 10-13 NO GAP;
    req_5:         AT 28-FEB-91:17:58
    req_6:         +/- 12H;

!

    linenum:       11.000
    sequence_1:    USE
    sequence_2:    UV
    targname:      MOON-04
    time_per_exp:  X140

!

    linenum:       12.000
    sequence_1:    USE
    sequence_2:    V
    targname:      MOON-04
    time_per_exp:  X10

!

    linenum:       13.000
    sequence_1:    USE
    sequence_2:    R
    targname:      MOON-04
    time_per_exp:  X10

!

    linenum:       20.000
    sequence_1:    USE
    sequence_2:    VUV-PF
    targname:      MOON-08
    time_per_exp:  X400
    req_1:         GROUP 20-23 NO GAP;
    req_2:         AT 28-FEB-91:17:58
    req_3:         +/- 12H;

!

    linenum:       21.000
    sequence_1:    USE
    sequence_2:    UV
    targname:      MOON-08
    time_per_exp:  X100

!

    linenum:       22.000
    sequence_1:    USE
    sequence_2:    V
    targname:      MOON-08
    time_per_exp:  X60

!

    linenum:       23.000
    sequence_1:    USE
    sequence_2:    R
    targname:      MOON-08
    time_per_exp:  X30

!

    linenum:       30.000
    sequence_1:    USE
    sequence_2:    R-PF
    targname:      MOON-20
    time_per_exp:  X200
    req_1:         SEQ 30-40 NO GAP;
    req_2:         AT 28-FEB-91:17:58
    req_3:         +/- 12H;

!

    linenum:       31.000
    sequence_1:    USE
    sequence_2:    V-PF
    targname:      MOON-20
    time_per_exp:  X400
    param_1:       SUM=2X2,PRE-FLASH=YES,

!

    linenum:       32.000
    sequence_1:    USE
    sequence_2:    UV-PF
    targname:      MOON-20
    time_per_exp:  X1000
    param_1:       SUM=2X2,PRE-FLASH=YES,
    param_2:       PURGE=YES

!

    linenum:       40.000
    sequence_1:    USE
    sequence_2:    V-PF
    targname:      MOON-30
    time_per_exp:  X1260
    param_1:       SUM=2X2,PRE-FLASH=YES,
    param_2:       PURGE=YES

!

    linenum:       50.000
    sequence_1:    USE
    sequence_2:    R-PF
    targname:      MOON-20
    time_per_exp:  X200
    req_1:         SEQ 50-60 NO GAP;
    req_2:         SAME POS FOR 50 AS 30;
    req_3:         AT 16-MAR-91:07:45
    req_4:         +/- 4 D;
    comment_1:     BACKGROUND OFFSET FROM NEW MOON

!

    linenum:       51.000
    sequence_1:    USE
    sequence_2:    V-PF
    targname:      MOON-20
    time_per_exp:  X400
    param_1:       SUM=2X2,PRE-FLASH=YES
    req_1:         SAME POS
    req_2:         FOR 51 AS 31;
    comment_1:     BACKGROUND OFFSET FROM NEW MOON

!

    linenum:       52.000
    sequence_1:    USE
    sequence_2:    UV-PF
    targname:      MOON-20
    time_per_exp:  X1000
    param_1:       SUM=2X2,PRE-FLASH=YES,
    param_2:       PURGE=YES
    req_3:         SAME POS
    req_4:         FOR 52 AS 32;
    comment_1:     BACKGROUND OFFSET FROM NEW MOON

!

    linenum:       60.000
    sequence_1:    USE
    sequence_2:    V-PF
    targname:      MOON-30
    time_per_exp:  X1260
    param_1:       SUM=2X2,PRE-FLASH=YES,
    param_2:       PURGE=YES
    req_2:         SAME POS
    req_3:         FOR 60 AS 40;
    comment_1:     BACKGROUND OFFSET FROM NEW MOON

!
! end of exposure logsheet

! No scan data records found