HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2059

PERIOD COVERED:  0000Z (UTC) 02/11/98 - 0000Z (UTC) 02/12/98

Daily Status Report as of 043/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed STIS/CCD 7711 (STIS CCD G750L Fringing Flats.)

       The Space Telescope Imaging Spectrograph (CCD) was used to
investigate and monitor the STIS CCD flat-field fringing in the G750L
grating at its nominal wavelength setting {7751A}.  WAVECALs were also
taken at the same gain and wavelength setting.  Typical S/N = 100 for each
integration, and gain = 4 on each.  The observations were executed as
scheduled, and no anomalies were noted.

   1.2 Completed 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.

   1.3 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 Five 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.

   1.5 Completed STIS/CCD 7333 (STIS Images of 48 Damped Ly-Alpha Galaxies)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the damped Lyman-Alpha galaxy PKS0458-02.  This study will
unify absorption-line studies, and faint galaxy imaging studies, thereby
allowing a detailed treatment of the history of star formation, gas
consumption, chemical enrichment, and assembly in the population of
galaxies.  The observations were completed as planned, and no problems were
reported.

   1.6 Completed Four 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 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.

   1.8 Completed STIS/CCD 7674 (IR Standards)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard star G191B2B in order to establish a set of
absolute flux standards on the WD scale that extend the existing wavelength
coverage to 10300A with the STIS G750L grating setting.  The proposal
completed with no reported problems.

   1.9 Completed WF/PC-2 7336 (Cosmological Parameters Omega and Lambda
>From High-Redshift Type Ia Supernovae)

       The WF/PC-2 was used to make observations of the high redshifted
Type Ia supernova SN2-5h-Z0.  HST can make a direct measurement of the
cosmological parameters, Omega, Lambda, and curvature, using Type Ia
supernovae as calibrated "standard candles."  The observations were
executed as scheduled, and no anomalies were noted.

   1.10 Completed WF/PC-2 7505 (The Hubble Diagram for Distant Supernovae
Measuring Cosmic Deceleration and Global Curvature)

       The WF/PC-2 was used to make observations of Super Nova SN1998A1 in
order to produce a precise Hubble diagram from measuring cosmic
deceleration and global curvature.  HST can make an essential contribution
by providing photometry with substantially higher precision and better
temporal coverage than can be obtained from the ground.  The observations
were completed as planned, and no anomalies were reported.

   1.11 Completed Two Sets of STIS/CCD 7294 (Observations of a BL Lacertid
with a Unique Absorption Line System)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of a BL-Lac class object AO0235+164 to study its unique line
structure.  The line of sight for this object passes close to two luminous
objects.  One of these objects {or both} produces a unique variable 21 cm
absorption line system in the radio spectrum.  A wavelength calibration
image was also taken.  The observations were executed as scheduled, and no
anomalies were noted.

   1.12 Completed WF/PC-2 7387 (T-Tauri Star Snapshot Survey)

       The WF/PC-2 was used to make observations of the star DE-Tau as part
of a T-Tauri class star survey.  The observations were executed as
scheduled, and no anomalies were noted.

   1.13 Completed Two 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.

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

       The Near Infrared Camera (Camera Two) was used to make searching
observations for very low mass companions to variable star BD+43D4305.
This star is known to be within 10 parsecs of the Sun.  The observations
were executed as scheduled, and no anomalies were noted.

   1.15 Completed NIC/2/3 7453 (The SBF Hubble Diagram)

       The Near Infrared Camera (Camera Two and Three) was used to make
deep NICMOS observations of galaxy NGC-4472 to determine its distance using
the surface brightness fluctuation {SBF} method.  HST is essential for its
high spatial resolution which makes it possible to detect and remove
globular clusters and background galaxies that contaminate the SBF
measurement.  The observations were executed as scheduled, and no anomalies
were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 9
                                        Successful : 9

                          Scheduled Reacquisitions : 7
                                        Successful : 7

   2.2 FHST Updates:

                              Scheduled : 21
                             Successful : 21

   2.3 Operations Notes:

       There were no reported operational problems.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH