HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1591

PERIOD COVERED:  0000Z (UTC) 03/14/96 - 0000Z (UTC) 03/15/96

Daily Status Report as of 075/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 6187 (WF/PC-2 Cycle 5 Calibration: Earth Flat)

       The WF/PC-2 was used to make Earth streak flat calibration images. =
 These streak flats will be used to produce flat fields, to map the OTA =
illumination pattern and, in combination with other data, to produce new =
superflats.  The observations were completed as planned, and no problems =
were reported.

   1.2 Completed GHRS/1 5891 (Structurally Resolved Abundances and =
Depletions in the Rho Oph Cloud)

       The High Resolution Spectrograph (Side One) was used to make high =
resolution spectral observations of star HD143275 which is located within =
the Rho Orpiuchi Cloud in order to study its structurally resolved =
elemental abundances and depletions in different parts of the cloud.  The =
observations were completed as scheduled, and no anomalies were reported.

   1.3 Completed Two Sets of FOS/RD 5823 (Uranus: Ringlet Kinematics and =
Atmospheric Structures)

       The Faint Object Spectrograph (Red Side) was used to make high =
resolution spectrographic observations of the planet Uranus, its moon =
Titania, and a ringlet segment as a background star passed through the =
Uranian System.  The observations will provide information about the =
planet's atmosphere and its rings.  The observations were executed as =
scheduled, and no anomalies were noted.

   1.4 Completed GHRS/1 5882 (Ech-A Studies of Single Interstellar =
Clouds)

       The High Resolution Spectrograph (Side One) was used to make =
Echelle-A spectrographic observations of the star HD141637 (aka, Rho Leo) =
in order to study the interstellar absorption line clouds which lies in =
the line of sight to that star.  The observations were completed as =
planned, and no problems were reported.

   1.5 Completed WF/PC-2 5913 (Low-Mass Binaries and Luminosity Fuction)

       The WF/PC-2 was used to make observations of the low-mass binary =
system NGP016 (Late Type Class M dwarf stars).  The intent is to =
determine why the local stellar luminosity function is flat below =
Mv=3D12, while that found from more distant stars falls by an order of =
magnitude by Mv=3D14.  The observations were executed as scheduled, and =
no anomalies were noted.

   1.6 Completed COSTAR/U 6162 (FOC Cycle 5 PSF Monitoring)

       The Faint Object Camera (f/96) was used to make observations of a =
standard star and to monitor the point spread function of the COSTAR =
optical system.  The observations were completed as scheduled, and no =
anomalies were noted.

   1.7 Completed Two Sets of WF/PC-2 6363 (The Environments and Host =
Galaxies of BL-Lac Objects)

       The WF/PC-2 was used to make snapshot survey observations of =
BL-Lac object S5-054+84 in order to study its environment and its host =
galaxy.  The goal is to investigate systematic trends in host galaxy =
types, unusual morphological features, nearby companion galaxies, etc.  =
The observations were executed as scheduled, and no anomalies were noted.

   1.8 Completed GHRS/2 6086 (Searching For Flaring Activity on the Star =
Gamma Cas)

       The High Resolution Spectrograph (Side Two) was used to make rapid =
read-out mode spectrographic observations of the Be class star HD5394 =
(aka, Gamma Cas) to search for flaring activity.  This star shows =
variability in x-rays. A wavelength calibration image was also taken.  =
The observations were completed as planned, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 4
                                        Successful : 4

                          Scheduled Reacquisitions : 7
                                        Successful : 7

   2.2 FHST Updates: 

                              Scheduled : 5
                             Successful : 5

   2.3 Operations Notes: 

       The secondary mirror was moved +6 microns to correct for metering =
truss desorption at 074/1848Z.  The next move is anticipated in =
approximately 7 months.

       The STR dump commanded at 075/0505Z was expected to contain both =
science and engineering data.  The engineering data was not present due =
to inconsistencies between the 32K record in the SMS and a 4K format =
commanded in real time for the mirror move.

       There was a 5 minute 2 second non-recoverable loss of data to a =
low rate switch failure at STGT.  Later, there was a 13 minute 11 second =
recoverable 1M data loss due to a NASCOM data base problem.  TTRs were =
written for both cases.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        NSSC-1 software patch 5.3B is expected to be installed at =
approximately 075/1957Z.

/DMH