HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1599

PERIOD COVERED:  0000Z (UTC) 03/26/96 - 0000Z (UTC) 03/27/96

Daily Status Report as of 087/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three Sets of FOS/BL 6166 (FOS Cycle 5: Location of =
Spectra and Wavelength Calibration)

       The Faint Object Spectrograph (Blue Side) was used to make =
wavelength calibration images to measure the stability of the FOS Blue =
Side wavelength scale and spectral locations.  Taled calibration =
observations were also taken.  The observations were completed as =
planned, and no anomalies were reported.

   1.2 Completed WF/PC-2 6679 (HST Investigation of a Bright New Comet)

       The WF/PC-2 was used to make observations of the bright new comet =
Hyakutake (aka, The Great Comet of 1996).  The images will yield =
information of the nuclear size and coma near the nucleus. among the =
goals are the abundance determination of volatile components, and the =
search for previously undetected species.  The FGS acquisition for this =
proposal, at 086/011752Z failed.  HSTAR 5548 was written.  No further =
anomalies were noted.

   1.3 Completed FOS/RD 6150 (Detecting the Hydroxyl Radical in the =
Jovian Magnetosphere)

       The Faint Object Spectrograph (Red Side) was used to make =
observations of the abundance of OH in the Jovian magnetosphere near the =
torus of the moon Europa.  Near the beginning of this two-and-a-half hour =
proposal, there was an approximate 45-minute loss of lock, and the take =
data flag was down.  HSTAR 5549 was written.  Otherwise, the observations =
were completed as planned, and no further anomalies were noted.

   1.4 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.  =
The observations were completed as scheduled, and no problems were =
reported.

   1.5 Completed FGS 6151 (Masses of Pre-main Sequence Stars: Cycle 4 =
GO/CAL)

       The FGSs were used to make observations of the pre-main sequence =
binary star ZZ-Tau located in the Taurus star forming region.  The FGS =
data will provide the apparent orbits needed to compute the total mass of =
the system.  The observations were executed as scheduled, and no =
anomalies were noted. 

   1.6 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 flu=
x excesses at 3000 A0 and galactic sources with excesses at 1600 A0.  The =
FHST update immediately prior to this observation failed, but no effect =
to this proposal was reported.  The observations were completed as =
planned, and no problems 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 1ES1533+53 in order to study its environment and its host =
galaxy.  The goal is to investigate systematic trends in host galaxy =
type, unusual morphological features, nearby companion galaxies, etc.  =
The observations were executed as scheduled, and no anomalies were noted.

   1.8 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 QDOTULIR13.  These data will be searched for =
multiple cores, which imply a merger has occurred, and for starburst regio=
ns.  The observations were executed as scheduled, and no anomalies were =
noted.

   1.9 Completed WF/PC-2 6250 (WF/PC-2 Cycle 5 Calibration: Internal =
Monitor)

       The WF/PC-2 was used to make a series on internal calibration =
observations.  Internal flats, biases, and K-Spot calibration images were =
taken.  These observations are designed to monitor the health of the =
cameras.  The observations were executed as scheduled, and no anomalies =
were noted.

   1.10 Completed FGS 6238 (Companion to GL6230)

       The FGSs were used to make POS and TRANS mode astrometric =
observations of star GL623 (aka, Gleise 623) looking for possible =
companions.  Five other reference stars were also used.  From these data =
the precise parallax, barycentic orbits, and accurate masses of the star =
and its companion will be determined.  The observations were completed as =
schedule, and no anomalies were reported.

   1.11 Completed WF/PC-2 5997 (The Cores of Elliptical Galaxies in the =
Coma Cluster)

       The WF/PC-2 was used to make observations of the large elliptical =
galaxy NGC-4827 which is located in the Coma Cluster.  The purpose is to =
study the luminosity profiles in the central nuclear region.  The =
observations were completed as scheduled, and no anomalies were noted.

   1.12 Completed FOS/BL 5460 (Constraints on Massive Star Evolution from =
Carbon and Oxygen Abundance)

       The FOS (Blue Side) was used to observe BR93-FIX to obtain UV =
spectra of several Wolf-Rayet stars in the LMC to determine the C/He and =
O/C ratios.  The observation was completed as scheduled, and no problems =
were reported.

   1.13 Completed S/C 5582 (FOC/48 Monthly Activation (Camera Section =
Only): Cycle 4) 

        This proposal was executed as scheduled, and no anomalies were =
noted. 

   1.14 Completed WF/PC-2 5971 (HST Medium Deep Survey)

       The WF/PC-2 was used to make a long exposure medium deep sky =
survey observation at latitudes larger than 10 degrees taken in parallel =
with the prime science observations.  The observations were executed as =
scheduled, and no anomalies were noted.

   1.15 Completed FOS/RD 6167 (FOS Cycle 5: Dark Monitoring)

       The Faint Object Spectrograph (Red Side) was used to make several =
dark calibration images.  All exposures were internals.  All spectra was =
done in the image mode.  The observations were completed as planned, and =
no problems were reported.

   1.16 Completed WF/PC-2 5982 (Imaging of a Complete Sample of the =
Nearest Infrared Quasars)

       The WF/PC-2 was used to make two color observations of the nearby =
infrared quasar (IR QSO) IRAS12071.  It is believed that this IR QSO =
resulted from the merger of two gas-rich galaxies.  The observations were =
executed as planned, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 6
                                        Successful : 6

                          Scheduled Reacquisitions : 7
                                        Successful : 7

   2.2 FHST Updates: 

                              Scheduled : 11
                             Successful : 10

       The update at 087/0725Z failed.

   2.3 Operations Notes: 

       There were no operational problems.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH