!  File:  4238C.PROP
!  Database:  PEPDB
!  Date:  20-FEB-1994:18:39:00

coverpage:

  title_1:         FOC OPTICAL FOCUS - CYCLE 2
    proposal_for:  CAL/FOC
    cont_id:       2919
    pi_title:      DR.
    pi_fname:      FRANCESCO
    pi_lname:      PARESCE
    pi_inst:       SPACE TELESCOPE SCIENCE INSTITUTE
    pi_country:    USA
    hours_pri:     12.50
    foc:           X
! end of coverpage

abstract:

    line_1:        The objective of this test is to determine the optimum setting of the FOC
    line_2:        refocusing mechanism, using a standard HST calibration target
    line_3:        field (NGC 6752).  Three filters of different thickness are used.
    line_4:        Each focus procedure will require 10 minutes per filter per
    line_5:        mode of on-target time. The test will be carried out for F/96 only because
    line_6:        of the greater importance to be at optimum focus for that relay since it
    line_7:        is the highest resolution camera.

!
! end of abstract

general_form_proposers:

  lname:           PARESCE
    fname:         FRANCESCO
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA

!

  lname:           PARESCE
    fname:         F.
    title:         DR.
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        This proposal describes the focussing procedures for f/96.
    line_2:        The procedure is based on observations of a standard HST
    line_3:        calibration target field (NGC 6752), one taken
    line_4:        at the nominal focus setting, one taken in the positive direction of the
    line_5:        refocussing mechanism, one more at a setting in the negative direction.
    line_6:        Because of backlash it will be necessary to step the refocus mechanism in
    line_7:        the same direction every time. At the completion of a focussing cycle the
    line_8:        mechanism will be returned to its nominal position.
    line_9:        Three filters will be used for the F/96 relay.

!

  question:        3
    section:       2
    line_1:
    line_4:        It is assumed that the optimum focus position for the other filters can be
    line_5:        derived from the comparison of the observations in the reference filters
    line_6:        with measurements taken during FOC ground testing.

!
!end of general form text

general_form_address:

  lname:           PARESCE
    fname:         FRANCESCO
    category:      PI
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        NGC6752
    name_2:        DUN 295
    descr_1:       J
    pos_1:         RA=19H 06M 27.3S +/- 0.1S,
    pos_2:         DEC=-60D 03' 50.5" +/-1",
    equinox:       1950
    fluxnum_1:     1
    fluxval_1:     B=18 +/- 3

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    sequence_1:    DEFINE
    sequence_2:    FOCUS
    targname:      #
    config:        #
    opmode:        #
    aperture:      #
    sp_element:    #
    num_exp:       1
    time_per_exp:  600S
    priority:      1
    param_1:       #
    req_1:         SEQ 1-1.2 NO GAP;
    req_2:         CYCLE 2/ 1-4;
    comment_1:     FOCUS MIRROR MOVED TO POSITION 12
    comment_2:     BEFORE EXPOSURE IS TAKEN.

!

    linenum:       1.100
    sequence_1:    DEFINE
    sequence_2:    FOCUS
    targname:      #
    config:        #
    opmode:        ^
    aperture:      ^
    sp_element:    #
    num_exp:       1
    time_per_exp:  600S
    priority:      1
    param_1:       ^
    comment_1:     FOCUS STEPPED TO POSITION 62.

!

    linenum:       1.200
    sequence_1:    DEFINE
    sequence_2:    FOCUS
    targname:      #
    config:        #
    opmode:        ^
    aperture:      ^
    sp_element:    #
    num_exp:       1
    time_per_exp:  600S
    priority:      1
    param_1:       ^
    comment_1:     FOCUS STEPPED TO POSITION 112.

!

    linenum:       2.000
    sequence_1:    USE
    sequence_2:    FOCUS
    targname:      NGC6752
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X512
    sp_element:    F140W
    req_3:         SEQ 2 - 4 NO GAP;

!

    linenum:       3.000
    sequence_1:    USE
    sequence_2:    FOCUS
    targname:      NGC6752
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X512
    sp_element:    F220W,F1ND

!

    linenum:       4.000
    sequence_1:    USE
    sequence_2:    FOCUS
    targname:      NGC6752
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X512
    sp_element:    F342W,F4ND

!
! end of exposure logsheet

! No scan data records found