HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2118

PERIOD COVERED:  0000Z (UTC) 05/06/98 - 0000Z (UTC) 05/07/98

Daily Status Report as of 127/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three Sets of WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental
Darks pt2/3)

       The WF/PC-2 was used to make a series of Cycle 7 supplemental
calibration darks.  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 executed as scheduled, and no
anomalies were noted.

   1.2 Completed STIS/CCD 7926 (CCD Dark and Bias Monitor -- Continued)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
several dark and bias calibration observations.  This is to measure CCD
dark current and bias rates for the two supported amplifier settings {gain
= 1 and gain = 4} in order to gather data for making superdarks and
superbiases.  These observations will also track the growth of hot pixels
on the CCD in general and within the various target acquisition apertures
specifically.  The observations were executed as scheduled, and no
anomalies were noted.

   1.3 Completed STIS/CCD 7803 (Daily Darks to Update Acquisition Bad Pixel
Table Part III)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
daily dark calibration updates.  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 completed as planned, and no anomalies were reported.

   1.4 Completed NIC/2 7894 (Completing A Near-Infrared Search for Very Low
Mass Companions to Stars within 10 pc)

       The Near Infrared Camera (Camera Two) was used to make observations
searching for very low mass (VLM) companions to the star BD-07D4003.  This
search will be the largest, most sensitive, volume-limited search for VLM
companions ever undertaken.  The observations were completed as planned,
and no anomalies were reported.

   1.5 Completed S/C 7954 (FGS-1R Optimization)

       Desorption and gravity release effects have modified the morphology
and modulation of the FGS-1R Transfer Function.  This test will accomplish
a re-optimization of the performance of FGS-1R by adjusting the FF3 mirror
until the S curve at the center of the field of view is comparable to the
optimized S curve obtained during SMOV.  This test requires special data
downlinks and uplinks for real-time commanding of the FF3.  The test
concluded with no reported problems.

   1.6 Completed Six Sets of WF/PC-2 7909 (POMS Test Proposal: WF II
Parallel Archive Proposal)

       The WF/PC-2 was used to make parallel observations as part of the
POMS test proposal.  This test proposal is designed to simulate scientific
plans.  The observations were completed as planned, and no problems were
reported.

   1.7 Completed Four Sets of NIC/2/3 7907 (NICMOS Pure Parallel Winter 97-98)

       The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel spectrographic observations of sky regions when another
instrument is prime.  The observations were completed as planned, and no
anomalies were reported.

   1.8 Completed Three Sets of STIS/CCD 7908 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
calibration observations as part of the POMS Test Proposal.  This was a
STIS non-scripted parallel proposal.  The observations were completed as
planned, and no problems were reported.

   1.9 Completed WF/PC-2/STIS/CCD/NIC/1/2/3 7307 (The Formation and
Evolution of Rich Star Clusters in the LMC)

       The WF/PC-2, the Space Telescope Imaging Spectrograph (CCD), and the
Near Infrared Camera (Cameras One, Two and Three) were used to make
observations of the rich star clusters which are located within the Large
Magellanic Cloud in order to study their formation and evolution.  These
observations will help us understand the origin and evolution of rich star
clusters in our own galaxy.  The observations were completed as scheduled,
and no anomalies were reported.

   1.10 Completed NIC/1/2/3/STIS/CCD 7267 (Infrared Imaging and Polarimetry
Observations of the Obscured Nucleus of Centaurus A)

       The Near Infrared Camera (Cameras 1, 2 and 3) and the Space
Telescope Imaging Spectrograph (CCD) was used to make infrared and
polarimetry observations of the inner nuclear region of Centaurus A.  This
project complements and extends the studies we performed with HST in the
optical bands and in the infrared with ground based data.  The observations
were completed as scheduled, and no anomalies were reported.

   1.11 Completed Two Sets of WF/PC-2 7282 (A Continuing Snapshot Survey
for Compact Stellar Groups and Clusters around Wolf-Rayet Stars)

       The WF/PC-2 was used to make observations of the Wolf-Rayet stars
WR105 and WR114 as part of a continuing snapshot survey of compact stellar
groups and clusters.  The newly imaged clusters allow us to accurately
determine the distances, luminosities, and ages of the WR members.  The
observations were executed as scheduled, and no anomalies were noted.

   1.12 Completed Three Sets of STIS/CCD 7911 (STIS Galactic Plane Pure
Parallel Program)

       The Space Telescope Imaging Spectrograph (CCD) was used to make low
galactic latitude survey observations in parallel with the prime science
observations.  Short exposures with the 50CCD imaging mode will provide the
wavelength zero-point calibration.  These data will be placed immediately
into the Hubble Data Archive.  The observations were executed as scheduled,
and no anomalies were noted.

   1.13 Completed WF/PC-2 7463 (Proper Motion of the Sagittarius Dwarf Galaxy)

       The unique spatial resolution of the WF/PC-2 was used to determine
the proper motion of the Sagittarius dwarf galaxy.  The observation was
completed with no reported problems.

   1.14 Completed WF/PC-2 7476 (Sakurai's Nova-Like Object: Real-Time
Monitoring of a Stellar Thermal Pulse)

       The WF/PC-2 was used to make images of Sakurai's nova-like object in
order to do real-time monitoring of a stellar thermal pulse.  The eruption
of Sakurai's nova-like variable in Sagittarius presents a
"once-in-a-lifetime" opportunity for real-time observations of a star
undergoing a final helium thermal pulse.  The observations were completed
as planned, and no anomalies were reported.

   1.15 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 M31 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.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 12
                                        Successful : 12

                          Scheduled Reacquisitions : 3
                                        Successful : 3

   2.2 FHST Updates:

                              Scheduled : 24
                             Successful : 24

   2.3 Operations Notes:

       The SSR correctable EDAC counts were cleared three times using ROP SR-1.

       Memory monitors for the STIS maximum slew time were installed at
126/1706Z.

       As described in 1.5, the optimization of FGS-1R is continuing with
the performance of the third of six expected iterations.  The Flat Fold
Mirror of the Articulated Mirror Assembly (AMA) was moved at 127/0616Z in
accordance with an operations request.  After a meeting to discuss the
analysis of this move later today, another AMA move is scheduled.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH