!  File:  3594C.PROP
!  Database:  PEPDB
!  Date:  19-FEB-1994:13:14:01

coverpage:

  title_1:         IMAGING POLARIZATION OF THE M87 NUCLEUS AND JET
    sci_cat:       QUASARS & AGN
    sci_subcat:    JETS
    proposal_for:  GO/DD
    pi_title:      DR.
    pi_fname:      FERDINANDO
    pi_lname:      MACCHETTO
    pi_inst:       SPACE TELESCOPE SCIENCE INSTITUTE
    pi_country:    USA
    pi_phone:      410-338-4790
    hours_pri:     9.00
    num_pri:       1
    wf_pc:         Y
    foc:           Y
    realtime:      Y
    time_crit:     Y
    funds_amount:  99479
    funds_length:  12
    pi_position:   SPD CHIEF
    off_fname:     ETHAN
    off_lname:     SCHREIER
    off_title:     DIRECTORS OFFICE
    off_inst:      SPACE TELESCOPE SCIENCE INSTITUTE
    off_addr_1:    3700 SAN MARTIN DRIVE
    off_city:      BALTIMORE
    off_state:     MD
    off_zip:       21218
    off_country:   USA
    off_phone:     410-338-4740
! end of coverpage

abstract:

    line_1:        We propose to map the distribution of polarized emission in the jet
    line_2:        of M87 and measure the polarization of the nucleus from visual to
    line_3:        ultra-violet wavelengths. This will for the first time enable the
    line_4:        nuclear polarization to be measured free of Faraday rotation effects
    line_5:        and allow firm limits on the strength of non-thermal emission versus
    line_6:        a compact nuclear star cluster to be obtained. Within the jet,
    line_7:        quantitative comparison with VLA flux and polarization measurements
    line_8:        at the same resolution as the VLA data will provide stringent
    line_9:        constraints for emission mechanism theories and on the physical
    line_10:       nature of the jet. We also propose to determine the proper motion
    line_11:       of the jet and to monitor the nucleus for variability in flux and
    line_12:       polarization properties.

!
! end of abstract

general_form_proposers:

  lname:           MACCHETTO
    fname:         FERDINANDO
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA
    esa:           Y

!

  lname:           SPARKS
    fname:         WILLIAM
    title:         DR.
    mi:            B.
    inst:          SPACE TELESCOPE SCIENCE INSTITUTE
    country:       USA

!

  lname:           BOKSENBERG
    fname:         ALEC
    title:         PROF.
    inst:          ROYAL GREENWICH OBSERVATORY
    country:       UNITED KINGDOM
    esa:           Y

!

  lname:           BIRETTA
    fname:         JOHN
    title:         DR.
    mi:            A.
    inst:          NATIONAL RADIO ASTRONOMY OBSERVATORY
    country:       USA

!
! end of general_form_proposers block

general_form_text:

  question:        3
    section:       1
    line_1:        FOC observations use 512x1024 unzoomed format to image whole jet
    line_2:        centered at middle of jet oriented with jet along long axis.  Direct
    line_3:        images with and without neutral density, short and long exposures to
    line_4:        use in proper motion analysis, choices to avoid problems with
    line_5:        non-linearity and bit-wraparound, with useful data on both bright and
    line_6:        faint emission.  Similar sequences defined for same filter in
    line_7:        combinations with Rochon prism polarizers.
    line_8:        PC observations to use continuum F547M filter; 3 polarizing filters 15
    line_9:        min each.  One position to cover the nucleus and whole jet at once. A
    line_10:       single short direct exposure to provide minimal redundancy in
    line_11:       polarization analysis.
    line_12:       ESSENTIAL that the polarization sequences be obtained with individual
    line_13:       exposures in the same orientation on the sky.

!

  question:        4
    section:       1
    line_1:        The observations require UV coverage not possible from the ground and
    line_2:        require the highest spatial resolution for comparison with existing VLA
    line_3:        data and to discriminate the nuclear point source from its
    line_4:        surroundings.

!

  question:        5
    section:       1
    line_1:        Interactive acquisition needed to locate jet accurately
    line_2:        within confines of 512x1024 format of the FOC. Jet size is
    line_3:        close to bounds of that format. All subsequent observations
    line_4:        to be done NO GAP so additional overhead of INT ACQ
    line_5:        worthwhile.  Orientation of jet to be along long axis of
    line_6:        512x1024 format. Jet position angle is 291deg.

!

  question:        6
    section:       1
    line_1:        INT FLATs to measure reseaux positions before and after observations.
    line_2:        We also require FOC image scale to be well established (sub-pixel
    line_3:        level) and assume STScI will provide that information.

!

  question:        7
    section:       1
    line_1:        Applicants have experience of similar imaging polarimetry from ground
    line_2:        based data and of using the imaging polarimetric mode of the FOC.
    line_3:        Software is therefore in place and available at STScI to reduce and
    line_4:        analyse this data. We also have access to the best available VLA
    line_5:        observations for quantitative comparison to the radio data.

!

  question:        8
    section:       1
    line_1:

!

  question:        9
    section:       1
    line_1:        Miscellaneous FOC GTO observations including M87 jet direct
    line_2:        imaging.
    line_3:        First Results from the Faint Object Camera: Observations of
    line_4:        PKS0521-36.  Macchetto, F. et al Ap.J.L., 369, L55 (1991).
    line_5:        First Results of the Faint Object Camera: Supernova 1987A.
    line_6:        Jakobsen, P. et al, Ap.J.L., 369, L63 (1991).
    line_7:        First Results of the Faint Object Camera:  Images of the
    line_8:        Gravitational Lens System G2237+0305.  Crane, P. et al
    line_9:        Ap.J.L., 369, L59 (1991).
    line_10:       First Results of the Faint Object Camera: Imaging the Core
    line_11:       of R Aquarii.  Paresce, F. et al Ap.J.L., 369, L67 (1991).
    line_12:       HST Observations of 3C66B: A Double-Stranded Optical Jet.
    line_13:       Macchetto, F. et al, Ap.J. 373, L55 (1991).
    line_14:       First Results from the Faint Object Camera:  High
    line_15:       Resolution Imaging of the Pluto-Charon System.  Albrecht,
    line_16:       R. et al, accepted Ap.J.Letters (1991).
    line_17:       Properties of the SN 1987A Circumstellar Ring and the
    line_18:       Distance to the Large Magellanic Cloud. Panagia, N. et al,
    line_19:       Ap.J.Letters, submitted, (1991).
    line_20:       Blue Stragglers in the Core of the Globular Cluster 47
    line_21:       Tucanae Paresce et al, Nature, 352, 297 (1991).
    line_22:       In-flight performance of the Faint Object Camera of the
    line_23:       Hubble Space Telescope.  Greenfield et al, proceedings of

!

  question:        10
    section:       1
    line_1:        STScI supplies network connections and a common
    line_2:        workstation-based computing environment (printers,
    line_3:        hard-copier, fileserver with shared diskspace), and access
    line_4:        to a central VAX cluster.  The proposers have workstations
    line_5:        or access to workstations from other sources.  This
    line_6:        proposal includes a request for additional resources to
    line_7:        assist in data analysis and interpretation.

!
!end of general form text

general_form_address:

  lname:           Macchetto
    fname:         Ferdinando
    title:         PI
    category:      PI
    inst:          Space Telescope Science Institute
    addr_1:        3700 San Martin Drive
    city:          Baltimore
    state:         MD
    zip:           21218
    country:       USA
    phone:         410-338-4790

!
! end of general_form_address records

fixed_targets:

    targnum:       1
    name_1:        NGC4486-JET
    descr_1:       E,303,315,907
    pos_1:         RA = 12H 28M 16.92S +/- 0.05S,
    pos_2:         DEC = +12D 40' 5.0" +/- 0.5"
    equinox:       1950.0
    pm_or_par:     N
    rv_or_z:       Z=0.0043
    acqpr_1:       EXT
    fluxnum_1:     1
    fluxval_1:     V=16.6

!
! end of fixed targets

! No solar system records found

! No generic target records found

exposure_logsheet:

    linenum:       1.000
    targname:      NGC4486-JET
    config:        PC
    opmode:        IMAGE
    aperture:      PC6-FIX
    sp_element:    F555W
    num_exp:       1
    time_per_exp:  800S
    s_to_n:        10
    priority:      1
    param_1:       CR-SPLIT=DEF
    req_1:         CYCLE 2;
    req_2:         SEQ 1-4 NO GAP;
    req_3:         ORIENT 156D +/- 30D;
    comment_1:     ORIENT TO ENSURE NUCLEUS TOWARDS
    comment_2:     PYRAMID APEX. JET PA IS 281 DEGREES.

!

    linenum:       2.000
    targname:      NGC4486-JET
    config:        PC
    opmode:        IMAGE
    aperture:      PC6-FIX
    sp_element:    F555W,POL0
    num_exp:       1
    time_per_exp:  900S
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2;
    req_2:         SAME POS FOR 2 AS 1;

!

    linenum:       3.000
    targname:      NGC4486-JET
    config:        PC
    opmode:        IMAGE
    aperture:      PC6-FIX
    sp_element:    F555W,POL60
    num_exp:       1
    time_per_exp:  900S
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2;
    req_2:         SAME POS FOR 3 AS 1;

!

    linenum:       4.000
    targname:      NGC4486-JET
    config:        PC
    opmode:        IMAGE
    aperture:      PC6-FIX
    sp_element:    F555W,POL120
    num_exp:       1
    time_per_exp:  900S
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2;
    req_2:         SAME POS FOR 4 AS 1;

!

    linenum:       10.000
    sequence_1:    DEF PNOND
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,POL0
    num_exp:       1
    time_per_exp:  25M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       11.000
    sequence_1:    DEF PNOND
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,POL60
    num_exp:       1
    time_per_exp:  25M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       12.000
    sequence_1:    DEF PNOND
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,POL120
    num_exp:       1
    time_per_exp:  25M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       13.000
    sequence_1:    DEF PNDL
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,POL0,F1ND
    num_exp:       1
    time_per_exp:  25M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       14.000
    sequence_1:    DEF PNDL
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,POL60,F1ND
    num_exp:       1
    time_per_exp:  25M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       15.000
    sequence_1:    DEF PNDL
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,POL120,F1ND
    num_exp:       1
    time_per_exp:  25M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       16.000
    sequence_1:    DEF PNDS
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,POL0,F1ND
    num_exp:       1
    time_per_exp:  5M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       17.000
    sequence_1:    DEF PNDS
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,POL60,F1ND
    num_exp:       1
    time_per_exp:  5M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       18.000
    sequence_1:    DEF PNDS
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,POL120,F1ND
    num_exp:       1
    time_per_exp:  5M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       20.000
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        ACQ
    aperture:      512X1024
    sp_element:    F320W
    num_exp:       1
    time_per_exp:  5M
    s_to_n:        3
    priority:      1
    req_1:         CYCLE 2;
    req_2:         INT ACQ FOR 20.5-34;
    req_3:         SEQ 20-34 NO GAP;
    req_4:         ORIENT 145.6D +/- 1D / 20-34;
    comment_1:     JET PA 291 DEG TO ALIGN WITH LONG AXIS
    comment_2:     OF APERTURE (Y) OFFSET 214.6 DEG USED.

!

    linenum:       20.500
    targname:      INTFLAT
    config:        FOC/96
    opmode:        RESEAU
    aperture:      512X1024
    sp_element:    CLEAR
    num_exp:       1
    time_per_exp:  DEF
    fluxnum_1:     1
    priority:      1
    param_1:       LED=BLUE,
    param_2:       LED-STEP=24
    req_1:         CYCLE 2;
    comment_1:     AIMING FOR 0.2 C/S/PIX B1 LED

!

    linenum:       21.000
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W
    num_exp:       1
    time_per_exp:  25M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2;
    req_2:         SAME POS FOR 22-33 AS 21;

!

    linenum:       22.000
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,F2ND
    num_exp:       1
    time_per_exp:  25M
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2;

!

    linenum:       23.000
    targname:      NGC4486-JET
    config:        FOC/96
    opmode:        IMAGE
    aperture:      512X1024
    sp_element:    F320W,F2ND
    num_exp:       1
    time_per_exp:  180S
    s_to_n:        10
    priority:      1
    req_1:         CYCLE 2

!

    linenum:       31.000
    sequence_1:    USE PNOND

!

    linenum:       32.000
    sequence_1:    USE PNDL

!

    linenum:       33.000
    sequence_1:    USE PNDS

!

    linenum:       34.000
    targname:      INTFLAT
    config:        FOC/96
    opmode:        RESEAU
    aperture:      512X1024
    sp_element:    CLEAR
    num_exp:       1
    time_per_exp:  DEF
    fluxnum_1:     1
    priority:      1
    param_1:       LED=BLUE,
    param_2:       LED-STEP=24
    req_1:         CYCLE 2;
    comment_1:     AIMING FOR 0.2 C/S/PIX B1 LED

!
! end of exposure logsheet

! No scan data records found