!  File:  2525C.PROP
!  Database:  PEPDB
!  Date:  17-FEB-1994:07:40:13

coverpage:

  title_1:         SEARCHING FOR THE GEMINGA (1E 0630+178) COUNTERPART WITH
    title_2:       MULTI-COLOUR PHOTOMETRY
    sci_cat:       STELLAR ASTROPHYSICS
    sci_subcat:    NEUTRON STARS
    proposal_for:  GO
    pi_title:      DR.
    pi_fname:      GIOVANNI
    pi_mi:         F.
    pi_lname:      BIGNAMI
    pi_inst:       CNR, INSTITUTE OF COSMIC PHYSICS
    pi_country:    ITALY
    pi_phone:      39-2-2367587
    keywords_1:    GEMINGA-IDENTIFICATION-X/GAMMA RAY SOURCES-NETRON STAR
    hours_pri:     4.00
    num_pri:       1
    foc:           X
    off_fname:     G.
    off_lname:     BOELLA
    off_title:     PROFESSOR
    off_inst:      IST.FISICA COSMICA CNR
    off_addr_1:    VIA BASSINI, 15
    off_addr_2:    20133
    off_city:      MILANO
    off_zip:       20133
    off_country:   ITALY
    off_phone:     39-2-2363542
    off_telex:     313839 MUACNR
! end of coverpage

abstract:

    line_1:        The optical identification of 1E0630+178 is a long-standing puzzle for which
    line_2:        the resources of ground-based astronomy have definitely been exhausted. The
    line_3:        importance of understanding the nature of this object lies not only with the
    line_4:        X-ray source, in itself unique, but also because it is most likely associated
    line_5:        with the high-energy gamma-ray source Geminga, With a gamma-ray/X-ray flux
    line_6:        ratio of about 1,000, and the same again (or more) X-ray/optical, the source is
    line_7:        very likely to be associated with a compact object, probably a neutron star, as
    line_8:        suggested also by the reported X-ray periodicity. The ST with multi colour
    line_9:        photometry by the FOC can clearly help investigate the best optical
    line_10:       candidate found so far (mb=26.5), and also look for others.

!
! end of abstract

general_form_proposers:

  lname:           CARAVEO
    fname:         P.
    title:         DR.
    mi:            A.
    inst:          CNR, INSTITUTE OF COSMIC PHYSICS
    country:       ITALY
    esa:           X

!

  lname:           MEREGHETTI
    fname:         S.
    title:         DR.
    inst:          CNR, INSTITUTE OF COSMIC PHYSICS
    country:       ITALY
    esa:           X

!

  lname:           BIGNAMI
    fname:         GIOVANNI
    title:         P.I.
    mi:            F.
    inst:          CNR, INSTITUTE OF COSMIC PHYSICS
    country:       ITALY
    esa:           X

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        For the porposed scientific objectives, we need the FOC in direct
    line_2:        image mode at f/96 (with blue and ultraviolet filters), thus
    line_3:        reaching the required sensitivity in one to two hours,
    line_4:        depending on the filters used.

!

  question:        4
    section:       1
    line_1:        As mentioned in the scientific justification, ground-based
    line_2:        astronomy has beem fully exploited in the case of Geminga. The use
    line_3:        of ST is clearly required by the faintness of the objectives to be
    line_4:        studied.

!

  question:        5
    section:       1
    line_1:        The observing time required by this program has been computed
    line_2:        according to the FOC handbook using the values of the
    line_3:        magnitudes of G",i.e. the faintest object detected up to now
    line_4:        in the error box, mr= 25.54 +/- 0.3, mv=25.37 +/- 0.2,
    line_5:        mb=26.5 +/- 0.5. Realistic interstellar extinction values
    line_6:        have been considered, as well as various sky background
    line_7:        conditions.

!

  question:        10
    section:       1
    line_1:        The Istituto di Fisica Cosmica has access to HP1000 and VAX
    line_2:        computers equipped with IHAP and MIDAS software packages for
    line_3:        image processing. Students from the Istituto di Fisica of
    line_4:        the Universita' di Milano normally take active part in the
    line_5:        data analysis.
    line_6:        Funds will be provided by the Agenzia Spaziale Italiana and
    line_7:        by the CNR.

!
!end of general form text

general_form_address:

  lname:           BIGNAMI
    fname:         GIOVANNI
    mi:            F.
    title:         DR.
    category:      PI
    inst:          ISTITUTO DI FISICA COSMICA
    addr_1:        VIA BASSINI, 15
    city:          MILANO 20133
    country:       ITALY

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        STAR-0633+1746
    name_2:        GEMINGA
    descr_1:       STAR
    descr_2:       X-RAY STAR
    descr_3:       NEUTRON STAR
    pos_1:         RA = 06H 33M 53.98S +/- 0.5",
    pos_2:         DEC = 17D 46' 11.20" +/- 0.5"
    equinox:       J2000
    comment_1:     THE LINES 1 AND 2 ABOVE
    comment_2:     REFER TO THE FAINTEST KNOWN
    comment_3:     OBJECT IN THE FIELD. STILL
    comment_4:     FAINTER OBJECTS MAY ALSO BE
    comment_5:     OF INTEREST.
    fluxnum_1:     1
    fluxval_1:     V = 25.3 +/- 0.2, E(B-V)=0.15
    fluxnum_2:     2
    fluxval_2:     B = 26.5 +/- 0.5

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      STAR-0633+1746
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X512
    sp_element:    F430W
    num_exp:       1
    time_per_exp:  4000S
    s_to_n:        10
    fluxnum_1:     2
    priority:      1

!

    linenum:       2.000
    targname:      STAR-0633+1746
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X512
    sp_element:    F320W
    num_exp:       1
    time_per_exp:  8540S
    s_to_n:        10
    fluxnum_1:     2
    priority:      1

!
! end of exposure logsheet

! No scan data records found