HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1588

PERIOD COVERED:  0000Z (UTC) 03/11/96 - 0000Z (UTC) 03/12/96

Daily Status Report as of 072/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Four Sets of WF/PC-2 6188 (WF/PC-2 Cycle 5 Calibration: =
Dark)

       The WF/PC-2 was used to make internal dark calibration images.  =
During the second iteration of this proposal, at 071/0210Z, there was a =
guide star acquisition failure, and the take data flag was down for the =
entire period.  HSTAR 5532 was written.  Otherwise, the other =
observations were completed as scheduled, and no problems were reported.

   1.2 Completed WF/PC-2 6346 (Snapshot Survey of the Ultraluminous IRAS =
Galaxy Sample-Part 1 High)

       The WF/PC-2 was used to make snapshot survey observations of the =
ultraluminous IRAS galaxy IR11095-02.  These data will be searched for =
multiple cores, which imply a merger has occurred, and for starburst =
regions.  The observations were executed as scheduled, and no anomalies =
were noted.

   1.3 Completed WF/PC-2 5990 (Globular Clusters in the Fornax Galaxies)

       The WF/PC-2 was used to search for globular clusters in galaxy =
NGC-1379 which is a member of the Fornax Galactic Cluster.  Because the =
galaxies in the Fornax Cluster have different morphologies than those of =
the Local Group, the globular cluster systems are also expected to show =
differences.  The first part of this proposal was affected by a guide =
star acquisition failure at 071/0210Z when the search limit flag was =
exceeded.  A subsequent FHST map showed bad attitude, and an ARU/PRT was =
performed at 071/0232Z.  The reacquisition at 071/0346Z was successful.  =
HSATR 5532 describes these events.  Otherwise, the observations were =
executed as scheduled, and no further anomalies were noted.

   1.4 Completed Two Sets of WF/PC-2 5829 (The Activity of Periodic Comet =
Schwassmann-Wachmann 1)

       The WF/PC-2 was used to make observations of periodic comet SW1 =
(aka, Schwassmann-Wachmann 1) to try and detect CO fluorescence.  The =
observations were completed as planned, and no anomalies were noted.

   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 NGP009 (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 Two Sets of FOS/BL and HRS/2 5169 (High Resolution =
Spectra of the Nucleus of NGC-4151: Cycle 4 High) 

       The Faint Object Spectrograph (Blue Side) and the High Resolution =
Spectrograph (Side Two) were used to make observations of the nucleus of =
galaxies NGC-4151 and NGC-4151 to study the C IV, C II, and Si II lines.  =
During the first iteration, which used the FOS/BL, the Y-Speed test =
failed at 071/110418Z, indicating that the FOS microprocessor load may =
have been too heavy to perform all background tasks.  HSTAR 5533 =
documented this event.  Then, during the second iteration, which utilized =
the HRS/2 instrument, a one minute loss of lock occurred, beginning at =
071/144458Z.  HSTAR 5534 was written.  Otherwise, the observations were =
executed as scheduled, and no anomalies were noted. 

   1.7 Completed WF/PC-2 6253 (Pure Parallel Archive Program)

        The WF/PC-2 was used to execute a pure parallel program taking =
ultraviolet observations running concurrently with prime science =
observations.  The intent is to search for extra-galactic sources with =
flux excesses at 3000 A0 and galactic sources with excesses at 1600 A0. =
The observations were completed as planned, and no problems were =
reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 5
                                        Successful : 5

       A loss of lock, of approximately a one minute duration, was =
experienced at 071/144458Z.  HSTAR 5534 was written.

                          Scheduled Reacquisitions : 10
                                        Successful : 10

   2.2 FHST Updates: 

                              Scheduled : 6
                             Successful : 6

   2.3 Operations Notes: 

       A new FGS star selector angle bias calculation was installed =
onboard the HST at approximately 071/1519Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH