HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2336

PERIOD COVERED:  0000Z (UTC) 03/24/99 - 0000Z (UTC) 03/25/99

Daily Status Report as of 084/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of WF/PC-2 7713 (WF/P-2 Cycle 7 Supplemental
Darks pt3/3)

       The WF/PC-2 was used to make supplemental dark calibration images.
This dark calibration program obtains three dark frames every day to
provide data for monitoring and characterizing the evolution of hot pixels.
The observations were completed as planned, and no anomalies were noted.

   1.2 Completed Three Sets of STIS/CCD 7912 (STIS Parallel Archive
Proposal - Nearby Galaxies - Imaging and Spectroscopy)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
parallel observations of nearby galaxies.  This survey will be useful to
study the star formation histories, chemical evolution, and distances to
these galaxies.  These data will be placed immediately into the Hubble Data
Archive.  The observations were completed as scheduled, and no problems
were reported.

   1.3 Completed STIS/CCD 8393 (POMS Test Proposal: STIS Non-Scripted
Parallel Proposal Continuation IV)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
POMS, non-scripted, low galactic latitude observations made in parallel
with the prime science observations.  The observations were executed as
scheduled, and no anomalies were noted.

   1.4 Completed STIS/MA1 7363 (The Nature of Two New Optical Counterparts
of Globular Cluster X-ray Sources)

       The Space Telescope Imaging Spectrograph (MA1) was used to make
observations of globular cluster NGC-1851-ST in order to study a new
optical counterpart to an X-ray source within the cluster.  This source is
a binary star and has the shortest known binary period of any such star.
The observations were executed as scheduled, and no anomalies were noted.

   1.5 Completed Four Sets of WF/PC-2 8090 (POMS Test Proposal: WF-II
Parallel Archive Proposal Continuation)

       The WF/PC-2 was used in the parallel mode to make some low galactic
latitude archive observations.  The program will be used to take parallel
images of random areas of the sky.  The observations were executed as
scheduled, and no anomalies were noted.

   1.6 Completed Four Sets of WF/PC-2 8053 (WF/PC-2 Cycle-7 Earth Flats --
Part II)

       The WF/PC-2 was used to take Earth flat calibration images.  This
proposal obtains sequences of Earth streak flats to construct high quality
flat fields for the WF/PC-2 filter set.  The observations were executed as
scheduled, and no anomalies were noted.

   1.7 Completed WF/PC-2 6967 (Blue Continuum Snapshots of 3CR Radio -
Continued Galaxies)

       The WF/PC-2 was used to make observations of the radio galaxy
3C131.0.  Radio galaxies are an important class of extragalactic objects:
they represent one of the most energetic astrophysical phenomena and they
may be used as probes of their environments.  They are unique probes of the
early Universe.  The observations were completed as planned, and no
problems were reported.

   1.8 Completed STIS/MA2 7720 (MAMA Full Field Sensitivity Monitor and PSF
Check)

       The Space Telescope Imaging Spectrograph (MA2) was used to make
observations of NGC-6681 in order to monitor the sensitivity of the
FUV-MAMA and NUV-MAMA over the full field and monitor the PSF.  The
observations completed as planned, with no reported problems.

   1.9 Completed WF/PC-2 7466 (From Globular Clusters to Tidal Dwarfs:
Structure Formation in Tidal Tails.)

       The WF/PC-2 was used to make observations of the globular clusters
(et al.) within the tidal tail of galactic merger NGC-3256W.  By modeling
these systems with N-body hydrodynamic codes, can we identify the physical
circumstances and formation histories which can produce tidal dwarfs, star
clusters, and other structures in tidal tails.  The observations were
completed as planned, and no anomalies were reported.

   1.10 Completed Two Sets of STIS/CCD 8091 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude, non-scripted, parallel observations.  The observations
were completed as planned, and no anomalies were noted.

   1.11 Completed WF/PC-2 6813 (The Oldest Star Clusters of Local Group
Irregular Galaxies)

       The WF/PC-2 was used to make observations of the oldest star
clusters located in the irregular galaxy NGC-6822 of the Local Group
Galactic Cluster.  Globular clusters of spiral and elliptical galaxies are
well- studied and they have provided much information on the early
histories of these types of galaxies. For irregular galaxies, however, very
little is known about the globular clusters and other old clusters.  The
observations were executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 7
                                        Successful : 7

                          Scheduled Reacquisitions : 9
                                        Successful : 9

   2.2 FHST Updates:

                              Scheduled : 19
                             Successful : 19

   2.3 Operations Notes:

       The SSR EDAC error counter was cleared twice per ROP SR-1.

       WF/PC-2 dump collection was enabled twice using ROP NS-4.  Each
collection took approximately 5 hours.  They were performed preparatory to
an anticipated WF/PC-2 patch.

       The NICMOS FPA Detector 1 temperature sensor was enabled per an
operations request.

       A TTR was written for data hits caused by problems at WSGT.  Another
TTR was written for a five-second, unrecoverable data drop-out beginning at
084/190530Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH