HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1996

PERIOD COVERED:  0000Z (UTC) 10/31/97 - 0000Z (UTC) 11/03/97

Daily Status Report as of 307/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Seven Sets of WF/PC-2 7621 (WF/PC-2 Cycle 7 Supplemental
Darks PT1/3)

       The WF/PC-2 was used to make supplemental dark calibration images.
This set of calibrations is intended to obtain three dark frames every day
to provide data for monitoring and characterizing the evolution of hot
pixels.  The observations were executed as scheduled, and no anomalies were
noted.

   1.2 Completed STIS/CCD 7802 (Daily Darks to Update Acquisition Bad Pixel
Table)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
calibration observations to obtain daily darks to update the acquisition
bad pixel table.  These daily darks are intended to identify hot pixels for
update to the acquisition on-board FSW hot pixel table.  Daily hot pixel
lists can also be used for science data analysis.  The observations were
executed as scheduled, and no anomalies were noted.

   1.3 Completed Three Sets of NIC/2 7495 (Survey of Gravitational Lenses
as Cosmological Tools)

       The Near Infrared Camera (Camera Two) was used to make survey
observations of object PKS1830-21 by obtaining deep, high-resolution images
in the optical and near IR in order to see if it is gravitationally lensed
and could be used as a cosmological tool.  The observations were executed
as scheduled, and no anomalies were noted.

   1.4 Completed Eighteen Sets of WF/PC-2 7786 (Pure Parallel Archive
Survey - Continuation)

       The WF/PC-2 was used to make observations as part of an archival
survey program in which the images were taken in parallel with the prime
science observations.  These WF/PC-2 parallel observations were obtained in
the ultraviolet in a search for interesting objects.  The observations were
completed as planned, and no problems were reported.

   1.5 Completed STIS/CCD/MA1/MA2/NIC/3 7633 (HDF-South Test Observations)

       The WF/PC-2, the Space Telescope Imaging Sectrograph (CCD/MA1) and
The Near Infrared Camera (Camera Three) were used to make observations
designed to test the potential guide stars and the FGSs which may be
acquired during the October 1998 CVZ passage for the HDF-South.
Observations were made of star HDFS-22333.  A wave length calibration image
was also taken.  The observations were completed as planned, and no
anomalies were reported.

   1.6 Completed FGS 6878 (Parallax of NGC-6853)

       The Fine Guidance Sensors were used to make astrometric observations
of stars located in NGC-6853.  NGC 6853 is one of the closest planetary
nebulae.  Its trigonometric parallax is presently only poorly known.  HST
observations have the potential to reduce the parallax uncertainty to about
0.0005 arcsec.  This proposal may have been affected by the guide star
acquisition failure at 304/054436Z, detailed in the previous report and in
HSTAR 6227.

   1.7 Completed Twelve Sets of NIC/1/2/3 7726 (NICMOS One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make one orbit parallel calibration observations.  The first iteration of
this proposal may have been affected by the guide star acquisition failure
at 304/054436Z, detailed in the previous report and in HSTAR 6227.
Otherwise, the observations were executed as scheduled, and no anomalies
were noted.

   1.8 Completed WF/PC-2 6521 (A Search For Outgassing From Kuiper Belt
Objects)

       The WF/PC-2 was used to make observations of the Kuiper Belt object
1994TB in order to detect forms of outgassing.  In the past three years
almost 30 small bodies lying on the inner edge of the proposed Kuiper-Belt
have been discovered using ground-based facilities.  These objects are now
being studied with the HST.  The observations were executed as scheduled,
and no anomalies were noted.

   1.9 Completed Eighteen Sets of NIC/1/2/3 7425 (Gravitational Lensing
Enhanced NICMOS Imagery of a Young, Rapidly Evolving Faint Blue Galaxy)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the galactic cluster GAL-CLUS-0.  Previous WF/PC-2
observations of this gravitationally lens system show a faint blue galaxy
is multiple-imaged by a foreground rich galaxy cluster.  It displays a
spectacular ring-like morphology with several bright knots and a dark
center that strongly suggests vigorous star formation and rapid evolution.
The observations were completed as planned, and no problems were reported.

   1.10 Completed WF/PC-2 6943 (WF/PC-2 Cycle 6: Throughput Verification
for Narrow Band Filters)

       The WF/PC-2 was used to make observations of object K3-76 in order
verify the throughput for the narrow band filters.  This program will
provide direct verification of throughput of narrow band filters through
observations of emission line objects.  The observations were completed as
planned, and no anomalies were reported.

   1.11 Completed Nineteen Sets of STIS/CCD 7782 (STIS Non-Scripted
Parallel Archive Proposal - Half Orbit)

       The Space Telescope Imaging Spectrograph (CCD) was used for a
non-scripted parallel archive proposal (one-half orbit).  The observations
were executed as scheduled, and no anomalies were noted.

   1.12 Completed Two Sets of NIC/1/2/3 7729 (NICMOS Short One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two, and Three) was used to
obtain "JHK" imaging of sky regions while another instrument was prime.
These observations were  part of the short NICMOS one-orbit parallel
program.  The observations were executed as scheduled, and no anomalies
were noted.

   1.13 Completed STIS/CCD 7721 (Slit Throughputs)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard source GRW+70D582 in order to determine the
relative throughput vs. wavelength for a variety of commonly used slits.
The observations were executed as scheduled, and no anomalies were noted.

   1.14 Completed Two Sets of WF/PC-2 7203 (Cosmology with the Medium Deep
Survey - Short Orbit Cases)

       The WF/PC-2 was used to take short (about 20 minute) exposures, to
be taken in parallel with the prime science observations, using the I
filter.  These exposures are part of the medium-deep survey, which
emphasizes exposures that will be useful in obtaining cosmological
parameters.  The observations were completed as planned, and no problems
were reported.

   1.15 Completed NIC/2/3 7424 (NICMOS Imaging of QSO Absorption-- Selected
Galaxies at z > 1)

       The Near-Infrared Camera (Cameras Two and Three) was used to make
observations of QSO/galaxy SBS0957+55.  The images will also be used to
connect the absorption line properties to the galaxy morphological
properties, inclination angles, and orientations in order to continue to
explore the connection between the absorbing gas and the galaxies.  The
observations were completed as scheduled, and no anomalies were reported.

   1.16 Completed Eight Sets of STIS/CCD 7783 (STIS Parallel Science)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations taken in parallel with the prime science.  The observations
were completed, and no problems were reported.

   1.17 Completed STIS/CCD 7354 (Kinematics of Gaseous Disks in the Nuclei
of Liners with Compact Flat Spectrum Radio Sources)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the nuclei of the liner in the compact flat spectrum source
galaxy NGC-3998.  Many active galactic nuclei channel energetic particles
into jets that feed powerful extended lobes of radio emission; others
remain quite compact.  Both classes of active galaxies are suspected to be
powered gravitationally by the accretion of surrounding material onto a
massive black hole.  The observations were completed as planned, and no
problems were reported.

   1.18 Completed WF/PC-2 6829 (Globular Cluster Core Structure and
Dynamics - Part 2)

       The WF/PC-2 was used to make observations of the globular cluster
NGC-5471 in order to study its core structure and dynamics.  Spectra was
obtained at the center of the ultraviolet brightness, and at a distance
within about one core-radius.  The observations were executed as planned,
and no problems were reported.

   1.19 Completed Nine Sets of STIS/CCD 7781 (STIS Non-Scripted Parallel
Archive Proposal - Full Orbit)

       The Space Telescope Imaging Spectrograph (CCD) was used for a
non-scripted parallel archive proposal (one full orbit).  The observations
were executed as scheduled, and no anomalies were noted.

   1.20 Completed STIS/CCD 7711 (STIS CCD G750L fringing flats.)

       The Space Telescope Imaging Spectrograph (CCD) was used to
investigate and monitor the STIS CCD flat-field fringing in the G750L
grating at it's nominal wavelength setting {7751A}.  WAVECALs were also
taken at the same gain and wavelength setting.  Typical S/N = 100 for each
integration, and gain = 4 on each.  The observations were executed as
scheduled, and no anomalies were noted.

   1.21 Completed NIC/1 7451 (Gravitational Lensing by Damped Ly-Alpha
Absorbers)

       The Near Infrared Camera (Camera One) was used to make observations
of object PG2112+059 in order to study gravitational lensing in damped
Lyman-Alpha absorbers.  Damped Lyman-Alphas are thought to arise in the
disk of the progenitors of present-day spiral galaxies.  The observations
were completed as scheduled, and no problems were reported.

   1.22 Completed WF/PC-2 6431 (Determination of the Extragalactric
Distance Scale)

       The WF/PC-2 was used to make observations of the galaxy NGC-247 to
be used in measuring the periods of Cepheid variable stars within this
galaxy.  This will allow for a more accurate estimate of the distances to
these galaxies through the period-luminosity relation for the Cepheid
stars.  The observations were executed as scheduled, and no anomalies were
noted.

   1.23 Completed WF/PC-2/NIC/3 7382 (The Star-Formation History of the
Large Magellanic Cloud)

       The WF/PC-2 and the Near Infrared Camera (Camera Three) were used to
make observations of the disk of the Large Magellanic Cloud.  These data
will enable us to quantitativly study the intermediate to low-mass stellar
populations and the star-formation history of the LMC.  The observations
were executed as scheduled, and no anomalies were noted.

   1.24 Completed WF/PC-2 7431 (Snapshot Survey of Microlensed Source Stars)

       The WF/PC-2 was used to make snapshot survey images of microlensed
source star Macho-96-B.  Gravitational microlensing surveys have revealed
an excess of lensing events over theoretical predictions toward both the
Large Magellanic Cloud and the Galactic Bulge.  The observations were
completed as planned, and no anomalies were reported.

   1.25 Completed WF/PC-2 6555 (What Causes the Astigmatism in
Gravitational Lenses?)

       The WF/PC-2 was used to make observations of the gravitationally
lensed quasar system QSO-160913 in order to study why these systems produce
astigmatic gravitational lenses.  Among multiply imaged quasars, those for
which the shape of the lensing mass can be measured, show surprisingly
strong deviations from circular symmetry (i.e., astigmatism in the
gravitational lens).  The observations were completed as planned , and no
problems were reported.

   1.26 Completed NIC/1/2/3 7266 (High-Resolution IR and Optical Imaging of
the Fields Around a Large Sample of Z > 4.5 Quasars)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the quasar BR2237-060 in order to make high-resolution
infrared and optical imaging of the fields around the quasars.  This object
appears to be very primitive and may represent early stages in the galaxy
formation process.  The observations were completed as planned, and no
anomalies were reported.



2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 18
                                        Successful : 18

                          Scheduled Reacquisitions : 24
                                        Successful : 24

   2.2 FHST Updates:

                              Scheduled : 43
                             Successful : 42

       Per HSTAR 6228, there was an FHST update failure at 305/182606Z.

   2.3 Operations Notes:

       The SSR interrupt log was dumped at 304/1828Z and at 306/1831Z.

       As described in HSTAR 6229, the STIS MAMA1 MCE reset at 306/162049Z.
At the time, the STIS MAMAs were in low voltage.  There was no SAA event.
The MAMA1 command log was dumped at 306/1903Z per ROP NS-14, and the STIS
error counter was reset at 306/1905Z per ROP NS-12.  Recovery occurred in
the SMS.  No proposals were affected.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH