HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2319

PERIOD COVERED:  0000Z (UTC) 02/01/99 - 0000Z (UTC) 03/02/99

Daily Status Report as of 061/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 6461 (High-Resolution Next Bright Galactic Nova)

       The WF/PC-2 was used to make high resolution images of the bright
galactic nova U-Scorpio after it erupted to search for fluorescence and
reflection light echoes from, and small-scale structure in, the nova
circumstellar gas and dust ejecta.  These observations were a target of
opportunity, and a new SMS had to be built.  The observations were executed
as scheduled, and no anomalies were noted.

   1.2 Completed Two Sets of STIS/CCD 7948 (CCD Dark and Bias Monitor --
Cont. to Dec. 98)

       The Space Telescope Imaging Spectrograph (CCD) was used 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.  The data will be used to 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 WF/PC-2 7337 (The Central Mass Profile in the Lowest
Redshift Cluster Lenses)

       The WF/PC-2 was used to make observations of the X-ray luminous
cluster of galaxies around the radio source PKS 0745-191.  This cluster
produces the brightest gravitational arc known.  The observations were
executed as scheduled, and no anomalies were noted.

   1.4 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.

   1.5 Completed WF/PC-2 6812 (The Nature of Very Red Field Galaxies)

       The WF/PC-2 was used to make observations of the galactic -cluster
0732.  A near-infrared selection is ideal for the study of distant galaxy
evolution because it minimizes bias toward finding strongly evolving or
star forming galaxies.  The observations were completed as planned, and no
anomalies were reported.

   1.6 Completed STIS/MA2 7950 (Cycle 7 MAMA Dark Measurements)

       The Space Telescope Imaging Spectrograph (MA1) was used to make a
dark calibration image.  This is to establish if the detectors are
performing nominally, that no internal movement of the MCP has taken place,
and establish dark level in orbit for a given operating temperature.  These
darks will be used in later image reduction and also trended over
instrument life time as indicators of detector degradation or damage.  The
observations were completed as planned, and no problems were reported.

   1.7 Completed STIS/CCD/MA2 7657 (STIS Spectroscopic and Imaging
Sensitivity, MAMA)

       The Space Telescope Imaging Spectrograph (MA1 and MA2) was used to
make observations of GD71 in order to study the spectroscopic and imaging
sensitivity.  Sensitivity measurements are done for all primary tilts of
the gratings and the prism used with the MAMAs, except for the G140L and
G230L gratings.  Imaging sensitivity measurements are done with all
apertures, including a neutral density filter.  A wavelength calibration
image was also taken.  The observations were executed as scheduled, and no
anomalies were noted.

   1.8 Completed 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.

   1.9 Completed WF/PC-2 7620 (WF/PC-2 Cycle 7 Standard Darks)

       The WF/PC-2 was used to make a series of Cycle 7 standard dark
calibration images.  This dark calibration program obtains dark frames
every week in order to provide data for the ongoing calibration of the CCD
dark current rate, and to monitor and characterize the evolution of hot
pixels.  The observations were executed as scheduled, and no anomalies were
noted.

2.0 FLIGHT OPERATIONS SUMMARY

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 5
                                        Successful : 5

                          Scheduled Reacquisitions : 11
                                        Successful : 11

   2.2 FHST Updates:

                              Scheduled : 10
                             Successful : 10

   2.3 Operations Notes:

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

       The Gyro-3 drift rate bias trend shows an increase since the last
report.  The rate of change over the last two days is 29.16 arcsec/hour/day
(was 24.75 arcsec/hour/day).

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH