HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2094

PERIOD COVERED:  0000Z (UTC) 04/02/98 - 0000Z (UTC) 04/03/98

Daily Status Report as of 093/0000Z

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 NIC/1/2/3 7893 (The Two Types of BL Lac Objects: Extrema
of Jet Physics)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the BL Lac object EX0706+59.  These observations will
build on the WF/PC-2 survey of a well-defined sample of 97 BL Lac objects,
for which host galaxies were detected in 90 simulations predict ~100
provide essential constraints on galaxy properties --- luminosity, size,
morphology, and color --- including an unprecedented ensemble of host
galaxy color profiles at subarcsecond spatial resolution.  The observations
were executed as scheduled, and no anomalies were noted.

   1.4 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.

   1.5 Completed Two Sets of NIC/1 7855 (The Evolution of Powerful Radio
Galaxies)

       The Near Infrared Camera (Camera One) was used to make observations
of the powerful radio galaxies OF247 and 3C93.1.  Our proposed NICMOS
observations combined with our multi-wavelength observing program will
finally provide us with the data we need to build a picture of how powerful
radio galaxies evolve.  The observations were completed as planned, and no
porblems were reported.

   1.6 Completed Four 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.

   1.7 Completed WF/PC-2 6716 (The Pattern of Massive Star Formation in
Irregular and Amorphous Galaxies)

       The WF/PC-2 was used to make observations of the galaxy NGC-1510.
The objective is to obtain deep WF/PC-2 images in far-ultraviolet (~1700
A0),U , V, and I bandpasses of the stellar populations in four nearby
galaxies known from their observed far-ultraviolet luminosities to be
forming massive (OB) class stars.  The observations were completed as
planned, and no anomalies were reported.

   1.8 Completed Two 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.

   1.9 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.

   1.10 Completed Five 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.

   1.11 Completed NIC/1/2/3 7878 (The Stellar Population of NGC-3379)

       The Near Infrared Camera (Camera One, Two and Three) was used to
make observations to study the stellar population of the nearest normal
giant elliptical galaxy NGC-3379.  The observations were executed as
scheduled with no anomalies.

   1.12 Completed FGS 7493 (Calibrating the Mass-Luminosity Relation at the
End of the Main Sequence)

       The FGSs were used to make observations of star GL473 in order to
make calibration observations of the mass-luninocity relation at the end of
the main sequence.  The study utilizes HST-FGS and infrared speckle imaging
to calibrate the mass-luminosity relation for stars less massive than 0.2
Msun, with special emphasis on objects near the stellar/brown dwarf border.
The observations were completed as scheduled, and no prblems were noted.

   1.13 Completed FGS 7488 (A Search for Main-Belt Binary Asteroids)

       The Fine Guidance Sensors were used to make astrometric observations
of the main belt asteroid AUSONIA to search for a possible companion
moon/asteroid.  The targets was chosen on the basis of an extensive
analysis based mainly on peculiar photometric properties suggesting a
possible binary nature.  The observations were completed as planned, and no
problems were noted.

   1.14 Completed STIS/CCD/MA2 7433 (UV Spectral Dating of Galaxies)

       The Space Telescope Imaging Spectrograph (MA2) was used to make
ultraviolet spectrographic observations of HD58551 to calculate a highly
accurate library of UV stellar spectra that can be used to estimate the age
and metallicity of galaxies of intermediate age {between 1 and 8 Gyrs}.
The critical step in this effort is to test the model spectra against
high-quality UV spectra of real stars.  A wave length calibration image was
also taken.  The observations were executed as scheduled, and no anomalies
were noted.

   1.15 Completed STIS/CCD/WF/PC-2/NIC/1/2/3 7574 (Sub-Arcsecond Structure
in {Active} Galactic Nuclei)

       The Space Telescope Imaging Spectrograph, the Near Infrared Camera
and the WF/PC-2 were all used to make sub arcsecond observations of the
structure of the galactic nuclei of Seyfert galaxy NGC-5194.  This galaxy
is known to possess [O-III] extended bright nuclear knots.  A wavelength
calibration image was also taken.  The observations were completed as
scheduled, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 11
                                        Successful : 11

                          Scheduled Reacquisitions : 4
                                        Successful : 4

   2.2 FHST Updates:

                              Scheduled : 26
                             Successful : 26

   2.3 Operations Notes:

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

       A test to prove the viability of TDRSS GN-mode transmission of
recorded HST science data through the TDRSS was completed at 092/11932Z.
The HST MA transponder and the DMS Com Module were configured for support
via realtime commands.  During the test, ESTR-2 was placed into record to
capture engineering telemetry loss resulting from the mandatory
single-channel configuration.  STOCC configured for the SSR dump five
minutes into the pass.  The dump duration was 20 minutes, 12 seconds.

       The science data were captured at both the PACOR-II and STOCC
facilities, with PACOR personnel reporting during the pass and subsequently
post-pass that the data quality looked to be very good.  WSC personnel
monitored the RF performance into the SSAR system.  Signal levels and
quality were reported to be very good.

       The test was considered an unqualified success, and a second
scheduled test event was thought unnecessary.  Since a special "X"
configuration code was provided by the NCC to configure the STGT for
support, coordination will be required to permanently add the new SN SHO
configuration code to allow operations to schedule TDRSS in this mode when
deemed appropriate.  This added mode will provide HST with the capability
to use its transfer switch to switch between HGAs during high volume
science periods.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH