HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2124

PERIOD COVERED:  0000Z (UTC) 05/14/98 - 0000Z (UTC) 05/15/98

Daily Status Report as of 135/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two 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 Ten 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.

   1.3 Completed WF/PC-2 7622 (WF/PC-2 Cycle 7 Internal Monitor)

       The WF/PC-2 was used to make a set of Cycle 7 internal monitoring
calibration measurements.  A variety of internal exposures are obtained in
order to provide a monitor of the integrity of the CCD camera electronics
in both bays {gain 7 and gain 15}, a test for quantum efficiency in the
CCDs, and a monitor for possible buildup of contaminants on the CCD
windows.  A bias calibration and an internal flat calibration image were
also taken.  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 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 supernovae 11H0.5Z1 and 11H0.5Z2.  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.

   1.6 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.

   1.7 Completed Ten 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.

   1.8 Completed WF/PC-2 6684 (WF/PC-2 Imaging of 2 JY Radio Galaxies)

       The WF/PC-2 was used to make observations of the radio galaxy
6C1017+37 from the 6C catalog.  These data will be used to look for a
correlation of optical structures with known radio luminosity.  If such a
correlation exists, then it will allow the importance of the radio beam
power to the optical structure to be quantified.  The observations were
executed as scheduled, and no anomalies were noted.

   1.9 Completed NIC/2 7227 (A Search for Low Mass/Sub-Luminous Companions
to M-Stars)

       The Near Infrared Camera (Camera Two) was used to make a search for
low mass/sub-luminous companions to the low mass M class star LHS292.
Knowledge of stellar and sub-stellar masses and luminosities at and below
the ~0.08 M{sun} H-burning limit is of fundamental importance.  A dark
calibration image was also taken.  The observations were completed as
planned, and no problems were reported.

   1.10 Completed Two Sets of WF/PC-2 6805 (A Detailed Study of the Blue
Stragglers in the Core of M3)

       The WF/PC-2 was used to make observations of blue straggler stars in
the core of the globular cluster M-3 (a.k.a., NGC-5272).  These data,
combined with a similar data set to be obtained with the WIYN telescope
from the outer regions of the clusters, should answer crucial questions
about the unusual blue straggler sequence and the stellar dynamics of M3.
The observations were executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 8
                                        Successful : 7
                          Scheduled Reacquisitions : 8
                                        Successful : 6

       The acquisition at 135/033500Z and the re-acquisitions at
135/050958Z and 135/064643Z all failed to RGA control when the FGS-3 search
radius limit was exceeded.  HSTAR 6475 was written.  NIC proposal 7824,
four iterations of STIS proposal 7908, and three iterations of WF/PC-2
proposal 7909 (all of which appear in the next report) were affected.

   2.2 FHST Updates:

                              Scheduled : 16
                             Successful : 16

   2.3 Operations Notes:

       Per ROP SR-1, the SSR correctable EDAC errors were cleared three times.

       An SSR science dump was re-performed at 135/0142Z, using ROP SR-1,
to successfully recover NIC data.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH