HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1903

PERIOD COVERED:  0000Z (UTC) 06/19/97 - 0000Z (UTC) 06/20/97

Daily Status Report as of 171/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed NIC/2 7330 (The Fueling of Active Nucleii: A NICMOS
Snapshot Survey)

       The Near Infrared Camera (Camera Two) was used to probe the dark
matter distribution of IC5267 far from the center by observing intervening
absorption from the MgII doublet (Lambda 2800 A0) in the spectrum of one
background QSO located in a geometrically optimal position.  HST
observations are required because this feature is in a wavelength range not
accessible from the ground, and the QSO magnitudes and expected strength of
absorption make IUE observations unfeasible.  The proposal completed as
expected with no anomalies.

   1.2 Completed Three Sets of WF/PC-2 6194 (WF/PC-2 Cycle 5: Polarization
Proposal)

       The WF/PC-2 was used to make polarization observations of star
BD+64D106 at four different spacecraft roll angles.  This should permit a
detailed and independent calibration of each polarizer quads.  The
observations were executed as scheduled, and no anomalies were noted.

   1.3 Completed Four Sets of STIS/CCD 7601 (CCD Dark and Bias Monitor)

       The Space Telescope Imaging Spectrograph (CCD) was used to conduct
bias and dark monitoring.  Also, observations were made to track the growth
of hot pixels on the CCD in general and within the various target
acquisition apertures specifically.  The observations were completed as
planned, and no anomalies were reported.

   1.4 Completed NIC/1/2/3 7038 (NICMOS Target Acquisition Test)

       This test will verify the ability of NICMOS and NSSC-1 flight
software to perform Mode-2 (onboard autonomous) target acquisitions of
object P035-R in support of coronographic imaging.  The efficacy of target
location, image centrartion and coordinate transformation (field distortion
an SI-to-FGS) on-board software will be evaluated.  Flight software data
table updates derived from the pre- and post-target acquisition images and
FGS data may follow the execution of this test.  The test completed
nominally with no reported problems.

   1.5 Completed WF/PC-2 7553 (Pure Parallel Archive Survey II)

       WF/PC-2 parallel observations were obtained in the ultraviolet in
search for interesting objects.  This program is designed to find
extragalactic sources with near ultraviolet excesses (3000 A0) outside the
galactic plane and far ultraviolet sources (1600 A0) in the galactic plane.
The procedure was executed as scheduled, and no anomalies were reported.

   1.6 Completed WF/PC-2 6004 (Direct Measurement of the Mass Distribution
in the Rich Cluster Abell 1689)

        The WF/PC-2 was used to make very deep observational exposures of
the rich galactic cluster Abell 1689 in order to make direct measurements
of its mass distribution.  The goal is to use the images of the blue,
background galaxies that are distorted by the gravitational field of Abell
1689 and to map the distribution of the mass in the cluster.  The
observations were completed as planned, and no anomalies were reported.

   1.7 Completed Two Sets of NIC/1/2/3 7701 (NICMOS Short One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used as
part of a short NICMOS one orbit parallel program, to obtain "JHK" imaging
of sky regions when another instrument is prime.  The observations were
completed as scheduled, and no anomalies were reported.

   1.8 Completed Five Sets of WF/PC-2 6909 (WF/PC-2 Cycle 6 Calibration:
Earth Flats

       The WF/PC-2 was used to make observations of the bright Earth to
obtain streak flats which are used to construct high quality flat fields
for the WF/PC-2 filter set.  The observations were executed as scheduled,
and no anomalies were noted.

   1.9 Completed Nine Sets of NIC/1/2/3 7676 (NICMOS-One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
conduct an on-orbit calibration procedure.  This was none in parallel with
the prime science observations.  The procedure was completed as scheduled,
and no anomalies were noted.

   1.10 Completed Four Sets of STIS/CCD 7675 (STIS Non-Scripted Parallel
Archive Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was used in the
parallel mode to obtain slitless spectroscopy with the G750L grism to
search for emission line galaxies at intermediate to high redshift.  The
observations were completed as planned, and no anomalies were reported.

   1.11 Completed STIS/CCD 7160 (CCD Performance Following Reconfiguration)

       The Space Telescope Imaging Spectrograph (CCD) was used to evaluate
the CCD performance following reconfiguration.  To avoid loss of science
data due to particle-induced CCD resets during passage through the SAA, the
CCD is reconfigured after each SAA passage.  Dark and bias calibration
observations were also taken.  The observations were completed as
scheduled, and no problems were reported.

   1.12 Completed STIS/CCD 7107 (STIS CCD Hot Pixel Annealing)

       The Space Telescope Imaging Spectrograph (CCD) was run though an
annealing process.  A bias and a dark calibration image were also taken.
The effectiveness of the CCD hot pixel annealing process is assessed by
measuring the dark current behavior before and after annealing and by
searching for any window contamination effects.  In addition CTE
performances examined by looking for traps in a low signal level flat.  The
observations were executed as scheduled, and no anomalies were noted.

   1.13 Completed STIS/CCD 7700 (STIS Non-Scripted Parallel Archive Proposal)

       The Space Telescope Imaging Telescope (CCD) was used to obtain
slitless spectroscopy with the G750L grism to search for emission line
galaxies at intermediate to high redshift.  Field galaxy surveys have shown
that at high redshift most galaxies have strong emission lines, and are
compact and blue.  This suggests that star formation rates were higher than
at present,and that AGN may have been more frequent.  The low background
and high resolution of HST separates these objects from the background.
The proposal completed as planned, and no problems were reported.

   1.14 Completed Two Sets of STIS/MA1 7078 (STIS18M Spectroscopic Mode
Image Quality - MAMA)

       The Space Telescope Imaging Spectrograph (MA1) was used to  examine
the spectroscopic quality across the entire detector for the primary
spectroscopic modes and establish whether changes occurred during launch.
The observations were completed as scheduled, and no anomalies were
reported.

   1.15 Completed WF/PC-2 6905 (WF/PC-2 Cycle 6 Calibration: Internal Monitor)

       The WF/PC-2 was used to make several internal calibrations
observations including biases and internal flats as part of a Cycle 6
calibrations procedure.  A variety of internal exposures are run weekly to
verify and monitor the health of the camera.  The observations were
executed as scheduled, and no anomalies were noted.

   1.16 Completed WF/PC-2 6601 (Evolution of Binary Neutron Stars and Their
White Dwarf Companions: Part 2)

       The WF/PC-2 was used to make observations of the binary star
STAR-2229 which is known to be a neutron star with a white dwarf companion.
It is also a millisecond rate pulsar.  This is part of an ongoing program
which is intended to enlarge the sample of known white dwarf companions as
new millisecond pulsars are discovered.  The observations were executed as
scheduled, and no anomalies were noted.

   1.17 Completed WF/PC-2 6587 (Black Holes and Cores of Early-Type Galaxies)

       The WF/PC-2 was used to make observations of early-type galaxy
NGC-1426 in order to study its nuclear core region and its possible black
hole.  The campaign to find black holes in the centers of galaxies using
HST has so far been highly successful.  The observations were completed as
planned, and no problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 4
                                        Successful : 4

                          Scheduled Reacquisitions : 10
                                        Successful : 10

   2.2 FHST Updates:

                              Scheduled : 10
                             Successful : 10

   2.3 Operations Notes:

       The SSR interrupt log dump was performed.

       The NICMOS EDAC RAM and CS buffer memory dumps were performed at
170/1840Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science and SMOV operations.

/DMH