HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1918

PERIOD COVERED:  0000Z (UTC) 07/11/97 - 0000Z (UTC) 07/14/97

Daily Status Report as of 195/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three Sets of STIS/CCD 7659 (Daily Darks to Update
Acquisition Bad Pixel Table)

       The Space Telescope Imaging Spectrograph (CCD) was used to make dark
calibration images in order to update the acquisition bad 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.

   1.2 Completed WF/PC-2 7253 (Miscellaneous (WC18) - Supplemental:
Post-ERO Observations of Eta Carinae)

       The WF/PC-2 was used to make observations of Eta-Carinae.  This
program is a follow-on to the successful WF/PC-2 ERO observation of Eta
Carinae.  The observations were executed as scheduled, and no anomalies
were noted.

   1.3 Completed Ten Sets of STIS/CCD 7727 (STIS Non-Scripted Parallel
Archive Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was used to obtain
parallel slitless spectroscopy with the G750L grating 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.  The observations were completed as
planned, and no anomalies were reported.

   1.4 Completed Twelve 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.

   1.5 Completed STIS/CCD 7276 (Synoptic Monitoring of Seasonal Phenomena
on Mars)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
seasonal ultraviolet imaging of the planet Mars.  This season includes the
formation of the north polar cap and hood system, a process which is not
well documented; the start of the classic dust storm season on Mars, when
large dust storms have often occurred; and an active cycle of small dust
storms in Hellas.  These observations will complete a period of continuous
monitoring of Mars which commenced in Cycle 6.  The observations were
completed as planned, and no problems were reported.

   1.6 Completed WF/PC-2 5958 (HST Observations of New Gravitational Lens
Candidates)

       The WF/PC-2 was used to make observations of object 13A-OF which is
a candidate for a new gravitational lens system.  The observations were
completed as planned, and no problems were reported.

   1.7 Completed STIS/CCD 7125 (CCD Coronographic Imaging of the Disk of
Beta Pictoris)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
resolution coronographic imaging of the inner section of the edge-on disk
surrounding the star HD39060 (a.k.a., Beta Pictoris).  The observations
were completed as scheduled, and no anomalies were noted.

   1.8 Completed Two Sets of WF/PC-2 6253 (Pure Parallel Archive Program)

       The WF/PC-2 was used to execute a pure parallel program taking
ultraviolet observations running concurrently with prime science
observations.  The intent is to search for extra-galactic sources with flux
excesses at 3000 A0 and galactic sources with excesses at 1600 A0.  The
observations were completed as planned, and no problems were reported.

   1.9 Completed WF/PC-2 6301 (High-Resolution Morphology of the Nuclear
Emission-Line Region in MRK-463)

       The WF/PC-2 was used to make high resolution observations of the
Markarian galaxy MARK-463 in order to study the emissionline region in its
nucleus.  Markarian-463 is an interacting pair of galaxies with two nuclei
separated by four arcseconds.  The western nucleus has strong narrow
emission lines and is best described as a LINER.  The brighter eastern
nucleus has a classical Seyfert 2 spectrum in unpolarized light.  The
observations were completed as planned, and no anomalies were reported.

   1.10 Completed Seven 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 grating 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 WF/PC-2 6779 (Photometry for M-28 and NGC- 5286)

       The WF/PC-2 was used to make photometric observations of NGC-5286 in
order to obtain V and I photometry for the centrally-concentrated galactic
globulars extending to slightly below the main-sequence turnoff.  These
data will yield color-magnitude diagrams and accurate stellar positions
which we will use to precisely determine the radial and azimuthal structure
of the clusters and to search for exotic stellar populations.  The
observations were completed as scheduled, and no anomalies were reported.

   1.12 Completed NIC/1/2/3 7328 (High Resolution IR Imaging Survey (IRIS)
of the Centers of the Nearest Active Galaxies)

       The Near Infrared Camera (Camera One, Two and Three) was used to
make high resolution infrared observations of the nearest active galaxy
Markarian in order to study its inner nuclear region.  Observing in the
near-IR minimizes the dust obstruction and maximizes sensitivity to the old
stellar population which dominates the mass.  The observations were
executed as scheduled, and no anomalies were noted.

   1.13 Completed WF/PC-2 5914 (The Formation History of Globular Clusters
in M-33)

       The WF/PC-2 was used to make V and I observations of  globular
cluster NGC-598-U13 which is located in the M-33 galaxy in order to study
its formation history.  Color-magnitude diagrams made from these images
will be examined for evidence of a parameter other than metallicity that
influences the evolutionary development of stars.  The observations were
executed as scheduled, and no anomalies were noted.

   1.14 Completed Eight Sets of NIC/1/2/3 7726 (NICMOS One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make a one orbit parallel calibration observations.  The observations were
executed as scheduled, and no anomalies were noted.

   1.15 Completed NIC/2 7331 (Near-IR Properties of the Bulges of Spiral
Galaxies)

       The Near Infrared Camera (Camera Two) was used to make infrared
observations of the bulge in spiral galaxy NGC-4569.  Near-IR data at HST
resolution are essential for correcting for the effect of dust and will
enable us to derive robust nuclear properties for the sample.  The
observations were executed as scheduled, and no anomalies were noted.

   1.16 Completed WF/PC-2 6437 (Sins: Supernova Intensive Study - Cycle 6)

       The WF/PC-2 was used to make observations of the supernova
LMC-SN1987 and its circumstellar matter which is located in the Large
Magellanic Cloud.  The observations were completed as planned, and no
problems were noted.

   1.17 Completed WF/PC-2 6835 (The Detail Morphology of Post-Merger Galaxies)

       The WF/PC-2 was used to make observations of the post-merger galaxy
Gal-1209-1 in order to study its morphology.  This galaxy has little or no
on-going star formation and a significant population of young stars.  The
observations were executed as scheduled, and no anomalies were noted.

   1.18 Completed Two Sets of WF/PC-2 6887 (A Photometric Search for Faint
Companions to Nearby Stars)

       The WF/PC-2 was used to make a photometric search observations of
the nearby star L145-141 in order to look for possible companions.  The
technique involves use of the Planetary Camera with wide band pass filters
to photometrically measure for the presence of resolved dark companions.
The observations were executed as scheduled, and no anomalies were noted.

   1.19 Completed Two Sets of WF/PC-2 6785 (Ionized Gas Disks in Nearby
Early Type Galaxies)

       The WF/PC-2 was used to make observations of the nearby early type
galaxies NGC-3718 and NGC-4111 in order to study their ionized gas disk
surrounding their nucleus.  Finding such disks could lead to the
possibility of detecting the gravitational effects of the supermassive
black holes they orbit.  The observations were executed as scheduled, and
no anomalies were noted.

   1.20 Completed WF/PC-2 6773 (The Bucher-Oemler Effect in Nearby Clusters
of Galaxies)

       The WF/PC-2 was used to make observations of several starburst and
post-starburst regions the nearby galaxies and the Coma D61.  These data
will be studied to determine what triggers major episodes of star formation
and what physically undermines the observed Butcher-Oemler effect in more
distant galaxies.  The observations were completed as planned, and no
problems were reported.

   1.21 Completed WF/PC-2 7589 (Lightning on Jupiter)

       The WF/PC-2 was used to make observations of Jupiter in order to
study lighting on the surface of the planet.  The Planetary Camera was used
with the narrow band H-alpha filter to maximize the contrast between
transient lightning flashes and the background reflected sunlight.  The
observations were completed as planned, and no problems were reported

   1.22 Completed WF/PC-2 6737 (Imaging Reflection Nebulosity in Three
Post-AGB Objects)

       The WF/PC-2 was used to make observations of the reflection nebula
surrounding the post-AGB objects HD179821 and HD161796.  The physical
mechanism of stellar mass loss on the AGB is one of the unsolved problems
in stellar astrophysics.  The observations were completed as scheduled, and
no anomalies were reported.

   1.23 Completed WF/PC-2 6838 (Dynamical Properties of Distant Field Galaxies)

       The WF/PC-2 was used to make observations of distant galaxies
contained in a location known as Field-0017.  A sample of several hundred
field galaxies to I = 24 (c.f. toI=22 z~0.5 from Lilly et al. 1995) is
being observed with the Keck telescope in a major new survey.  This HST
observational series is designed to match the field-of-view of the Keck
multiple-object spectrograph.  The observations were completed as
scheduled, and no problems were noted.

   1.24 Completed STIS/MA1 7097 (STIS MAMA Vignetting, Spatial Resol. In
Spectroscopic Modes)

       The Space Telescope Imaging Spectrograph (MA1) was used to make
spectrographic observations of star GD153 in order to study the systems
vignetting and spatial resolution.  These observations are intended to
measure STIS relative response to a point source in the first order modes
along the slit direction.  The observations were executed as scheduled, and
no anomalies were noted.

   1.25 Completed WF/PC-2 6863 (The Disks Around Main Sequence Stars)

       The WF/PC-2 was used to make images of main sequence the star
Epsilon-Eridani (a.k.a., HR-4796) which is known to have a large IRAS
excess. This is to search for a possible circumstellar disk.  Exposure
times were chosen to provide high signal-to-noise ratios in the possible
disk locations.  The observations were completed as planned, and no
anomalies were reported.

   1.26 Completed Two Sets of WF/PC-2 7450 (The Formation of Bulges of
Spiral Galaxies: Central Visual-Infrared Color Gradients)

       The WF/PC-2 was used to make observations of the bulges in spiral
galaxies NGC-6010 and NGC-5587 in order to obtain high-resolution optical
and near infrared images for a complete survey sample of bulges of spiral
galaxies.  The observations were completed as scheduled, and no anomalies
were reported.

   1.27 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 NGC-5970 far from the center by observing
intervening absorption from the MgII doublet (lambda 2800) 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.

   1.28 Completed NIC/2 7420 (A Near-Infrared Search for Very Low Mass
Companions to Stars Within 10 pc of the Sun)

       The Near Infrared Camera (Camera Two) was used to make searching
observations for very low mass companions to variable star FI-Vir.  This
star is known to be within 10 parsecs of the Sun.  The observations were
executed as scheduled, and no anomalies were noted.

   1.29 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-507 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 : 26
                                        Successful : 26

                          Scheduled Reacquisitions : 21
                                        Successful : 21

   2.2 FHST Updates:

                              Scheduled : 48
                             Successful : 48

   2.3 Operations Notes:

       On Friday it was reported that the K10 bypass relay had been closed.
This spacecraft power system configuration change was made due to a
previous failure of a Power Control Unit Panel Assembly (SPA) -1 relay back
in 1991.  Previously only two-thirds of the power from SPA-1 was available
to charge the batteries and provide spacecraft bus power.  The HST Project
decided to regain this lost power by using the bypass relay.  Although the
power isn't required for current operations, projections show it will be
needed sometime after the Third Servicing Mission, and thus it was deemed
prudent to make the change now to determine if the relay would work
properly.  Performance since the closure has been nominal.

       The SSR Interrupt Log was dumped at 193/0021Z, 194/0245Z, and 194/2324Z.

       At 194/0756Z, STIS status buffer message #732 was issued.  This
indicated that an EMC retry had occurred while moving the mode isolation
shutter.  The MAMA-2 exposure had completed prior to the error, so there
was no scientific impact.  HSTAR 6119 was written.  The error was cleared
by operations request at 194/1317Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science and SMOV operations.

/DMH