HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1976

PERIOD COVERED:  0000Z (UTC) 10/02/97 - 0000Z (UTC) 10/03/97

Daily Status Report as of 276/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed STIS/CCD/MA2/WF/PC-2 7515 (UV-Optical Spectra and Imagery
of the Bubble Galaxy NGC 7635)

       The Space Telescope Imaging Spectrograph (CCD/MA2) and the WF/PC-2
were used to acquire UV-optical STIS spectra and WFPC2 imagery of the
wind-blown Bubble Nebula NGC 7635.  The nebula's nearly spherical shell is
the result of a recent {< 10^6 years} stellar mass-loss event and is the
best young, clearly observed bubble available for study.  The ionization
front at the rim of the bubble will be examined, and the extent to which it
is shock-driven and the scale of the photoevaporative flow off the face of
the molecular cloud will be determined.  The observations were completed as
scheduled, with no reported problems.

   1.2 Completed Four Sets of NIC/1/2/3 7596 (NICMOS MULTIACCUM Dark
Characterization)

       The Near-Infrared Camera Multi-Object Spectrograph (Cameras One, Two
and Three) was used to make a NICMOS MULTIACCUM dark characterization.  The
purpose of this proposal is to monitor the darks using three different
MULTIACCUM sequences.  The observations were executed as scheduled, and no
anomalies were noted.

   1.3 Completed Three 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.

   1.4 Completed WF/PC-2 6858 (Imagery of a Pulsar Wind Nebula)

       The WF/PC-2 was used to study the emission from the core of the
unusual nebula CTB 80 which arises behind shocks which are being driven by
the pressure of the confined wind from a 40 ms pulsar.  The observation
completed as planned, with no reported anomalies.

   1.5 Completed Five 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.

   1.6 Completed Six 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 third and fourth
iterations of this proposal were affected by the MCE-2 reset described in
2.3.  Otherwise, the observations were executed as scheduled, and no
anomalies were noted.

   1.7 Completed Four 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.

   1.8 Completed WF/PC-2 7625 (WF/PC-2 Cycle 7 Earth Flats)

       The WF/PC-2 was used to make a series of Earth flat calibration
images.  These flat fields will allow mapping of the OTA illumination
pattern and will be used in conjunction with previous internal and external
flats to generate new pipeline superflats.  The observations were completed
as planned, and no anomalies were reported.

   1.9 Completed Three 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.

   1.10 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-3032 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.

   1.11 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-2903.  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.

   1.12 Completed FGS 6479 (Masses of Low Luminosity Hyades Cluster Members)

       The FGSs were used to make astrometric observations of low
luminosity star VA43 which is a member to the Hyades Cluster.  This
cluster, owing to its nearness, richness, and young age, occupies a pivotal
role in the studies of star formation and stellar populations.  The
observations were executed as planned, and no anomalies were reported.

   1.13 Completed Three 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 guide star
acquisition failure mentioned in 2.1, affected the second iteration of this
proposal.  Otherwise, the observations executed as scheduled, and no
further anomalies were noted.

   1.14 Completed WF/PC-2/NIC/1/2 7323 (The True Three-dimensional
Structure of the Eta-Carinea Nebula)

       The WF/PC-2 and the Near Infrared Camera (Cameras One and Two) were
used to trace independently the spatial distribution of the dust, of the
ionized gas and of the neutral material in the Eta-Carinae nebula. The
guide star acquisition failure mentioned in 2.1, occurred at the beginning
of this five-and-one-half hour proposal.  No further problems were reported.

   1.15 Completed 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.

   1.16 Completed 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.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 8
                                        Successful : 7

       As documented in HSTAR 6182, the acquisition at 275/1950Z failed,
with the search radius limit being exceeded, as a result of the FHST
failures mentioned in 2.2.  Proposals described in 1.13 and 1.14 were
affected.

                          Scheduled Reacquisitions : 8
                                        Successful : 8

   2.2 FHST Updates:

                              Scheduled : 17
                             Successful : 15

       Full maneuver updates at 275/1941Z and 275/1945Z failed.  HSTAR 6182
was written to describe this and relalted problems.

   2.3 Operations Notes:

       At 275/121424Z, while the HST was outside an SAA event, the STIS
MCE-2 (MAMA2) was reset autonomously.  The MAMA2 high voltage was off at
the time of the reset.  The MAMA2 recovery (MCE-2) was completed via
operations request at 275/1422Z.  The proposal described in 1.6 was
affected.

       A TTR and HSTAR 6181 were written to document questionable data
quality experienced via TDRS-East for the periods 275/0520Z-0607Z and
275/1421Z-1438Z.  During the second event WSGT performed a failover, which
cleared the problem.  The questionable data was restored via a subsequent
SSR playback.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH