HUBBLE SPACE TELESCOPE

           -             DAILY REPORT #1451

PERIOD COVERED:  0000Z (UTC) 08/09/95 - 0000Z (UTC) 08/10/95

Daily Status Report as of 222/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 5353 (Low-Mass Binaries in the Hyades: Cycle 4 High)

       The WF/PC-2 was used to make images of the low-mass, late M-Class
dwarf star RHY163 which is located in the Hyades cluster.  Some of the
companion stars may be brown dwarfs.  The observations were completed as
scheduled, and no problems were reported. 

   1.2 Completed WF/PC-2 5913 (Low Mass Binaries and the Luminosity Function.
)

        The WF/PC-2 was used to make observations of the low mass binary star
system MT008 (a late-type M class dwarf) to study the  local stellar
luminosity function.  The observations were executed as scheduled, and no
anomalies were noted.

   1.3 Completed WF/PC-2 6190 (WF/PC-2 Cycle  4 Calibration: Internal Flats)

       The WF/PC-2 was used to make an internal flat filter sweep and an
internal preflash level test.  The internal lamp is also used as a source for
the preflash test.  The observation was executed as scheduled, and no
anomalies were noted.

   1.4 Completed WF/PC-2 6119 (Snapshot Survey for Companions of Planetary
Nebula Nuclei)

       The WF/PC-2 was used to make snapshot survey observations of planetary
nebula NGC-6369 to study its nuclei and to look for possible companions.  The
observations were executed as scheduled, and no anomalies were noted.

   1.5 Completed FGS 6047 (Calibrating the Mass Luminosity Relation at the
End of the Main Sequence)

       The FGS were used to make astrometric observations of star GJ1245AC as
part of a study to determine its mass luminosity relationship.  The purpose
is to measure the precise parallax and the relative orbit of its faint
companion. The observations were completed as planned, and no problems were
reported.

   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 concurrent 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.

   1.7 Completed WF/PC-2 5957 (Snapshot of 3CR Radio Galaxies)

       The WF/PC-2 was used to make observations for radio galaxy FR533N33 to
study the morphology of the radio galaxy.  The observations were executed as
scheduled, and no anomalies were noted.

   1.8 Completed FOS/RD 6015 (Ultraviolet Emissions From Saturn's Rings and
Ring Atmosphere)

       The Faint Object Spectrograph (Red Side) was used to make ultraviolet
spectrographic observations of Saturn's Rings to study the extent of neutral
gas above the ring plane.  The observations are being taken during the time
around the ring plane crossing.  The observations were executed as scheduled,
and no anomalies were noted.

   1.9 Completed WF/PC-2 6189 (WF/PC-2 Cycle 5 Calibration: Internal Monitor
- Vis Flats)

       The WF/PC-2 was used to make internal visual flat calibration images. 
Both photometric and narrow-band filters were used.  A dark calibration image
was also taken.  The observations were executed as planned, and no problems
were reported.

   1.10 Completed WF/PC-2 5836 (Saturn Ring Plane Crossing Observations in
August and November 1995)

       The WF/PC-2 was used to make observations of the rings of the planet
Saturn during the ring plan crossing in order to determine their thickness
and distortion.  The moons Pan and Atlas will also be observed.  The
observations were completed as planned, and no problems were reported.

   1.11 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.

   1.12 Completed GHRS/2 5858 (High Resolutions Spectroscopy of HD44179)

       The High Resolution Spectrograph (Side Two) was used to make high
resolution spectrographic observations of the central star HD44179 in the
Rectangle Nebula.  The objective is to identify the molecules responsible for
some unidentified ultraviolet emission and absorption features.  The
observations were completed as scheduled, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 10
                                        Successful : 10

                          Scheduled Reacquisitions : 6
                                        Successful : 6

   2.2 FHST Updates: 

                              Scheduled : 16
                             Successful : 16



   2.3 Operations Notes: 

       HSTAR 5250 described the anomalous flagging of the
       QF25RLEX flag, FGS #2 search radius exceeded, at 
       222/0357Z.  As can be seen in 2.1 above, there were
       no FGS failures.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH
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