HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1538

PERIOD COVERED:  0000Z (UTC) 12/15/95 - 0000Z (UTC) 12/18/95

Daily Status Report as of 352/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 5914 (The Formation History of Globular Clusters =
in M-33)

       The WF/PC-2 was used to make V and I observations of  globular =
clusters NGC-598-H38, NGC-598-H10B and NGC-598-C38 which are located in =
the M-33 galaxy in order to study their formation history.  =
Color-magnitude diagrams made from these images will be examined for =
evidence of a parameter other than metallicity that influences the =
evolutionary development of stars.  The observations were executed as =
scheduled, and no anomalies were noted.

   1.2 Completed Five Sets of FOS/RD 6236 (FOS Cycle 5: Location of =
Spectra and Wavelength Calibration: Red Side Detector)

       The Faint Object Spectrograph (Red Side) was used to make =
calibration observations in order to determine the location of the spectra =
and to perform a wavelength calibration.  All observations were internal.  =
A Taled calibration was also completed.  The observations were completed =
as planned, and no anomalies were reported.

   1.3 Completed Two sets of 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.

   1.4 Completed Three Sets of WF/PC-2 5972 (Determination of the =
Extragalactic Distance Scale)

       The WF/PC-2 was used to make observations of the galaxies NGC-5972, =
NGC-2541 and NGC-3521 looking for standard candle Cepheid variable stars.  =
The purpose of these observations is to help estimate the Hubble constant =
with an accuracy of 10%.  The observations were executed as scheduled, and =
no anomalies were noted.

   1.5 Completed WF/PC-2 6056 (Spectroscopy and Imagery of the Orion =
Nebula)

       The WF/PC-2 was used to make observations of selected sections of =
the Orion Nebula (aka, NGC-1976).  A wavelength calibration image was also =
taken.  The observations were completed as planned, and no problems were =
reported.

   1.6 Completed WF/PC-2  5476 (Continuum Snapshots of 3CR Radio Galaxies) =


       The WF/PC-2 was used to make snapshot images of radio galaxy =
3C172.0 as part of a continuum survey and to study the galaxy's =
morphology.  The observations were executed as scheduled, and no anomalies =
were noted.

   1.7 Completed WF/PC-2/FOC/96 6257 (Deep Photometry of Globular Cluster =
M-92)

       Both the WF/PC-2 and the Faint Object Camera (f/96) were used to =
make deep observations of globular cluster NGC-6341 (aka, M-92) in order =
to obtain a color-magnitude diagram and luminocity function for its faint =
stars.  The FOC pictures were primary, and the WF/PC-2 pictures were in =
parallel.  The observations were completed as planned and no anomalies =
were reported.

   1.8 Completed FOS/RD 6007 (Comparison of Large Scale Structures in QSO =
Absorbers and Galaxies)

       The Faint Object Spectrograph (Red Side ) was used to make =
observations of Lyman-alpha absorber QSO CT336 to do a comparison study of =
its large scale structure.  This target was selected as a deep, redshifted =
galaxy from a survey which already exists.  The observations were executed =
as scheduled, and no anomalies were noted.

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

       The WF/PC-2 was used to make a long exposure medium deep sky survey =
observations 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.

   1.10 Completed WF/PC-2 6332 (The Circumnuclear Regions of Seyfert =
Galaxies LRF Part: cycle 4 Medium)

       The WF/PC-2 and the linear ramp filter (LRF) were used to make =
observations for the circumnuclear regions of  Seyfert galaxy NGC-262 in =
both emission and continuum.  From the data the PI expects to derive =
sufficient evidence to confirm or refute a suggested model of Seyfert Type =
2 galaxies.  The observations were executed as scheduled, and no anomalies =
were noted.

   1.11 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-1360 to study its nuclei and to look for possible =
companions.  The observations were executed as scheduled, and no anomalies =
were noted.

   1.12 Completed WF/PC-2 5968 (Extragalactic Background Light)

       The WF/PC-2 was used to make direct observations of the magnitude =
and color of the diffuse Extragalactic Background Light.  Knowledge of the =
value of the integrated optical flux of this background is of fundamental =
importance to cosmology.  A dark and bias observations were also taken.  =
The observations were completed as planned, and no anomalies were =
reported.

   1.13 Completed FOS/BL 6038 (Winds of Massive Stars in Nearby Galaxies, =
the WR Stars)

       The Faint Object Spectrograph ( Blue side) was used to make =
spectrographic observations of the massive Wolf-Rayette star M-33-FUV350 =
which is located in the M-33 Galaxy in order to study its stellar winds.  =
The observations were completed as planned, and no problems were reported.

   1.14 Completed WF/PC-2 6122 (High Resolution Imaging of Shocks in 30 =
Doradus)

       The WF/PC-2 was used to make observational high  resolution images =
of the shock/ionization fronts within H II region of NGC-2070-NW-Shell =
(aka, 30-Doradus).  The shock is in one of the outer, supershells that are =
part of this complex.  Both line and continuum exposures were made.  The =
observations were completed as scheduled, and no anomalies were reported. 

   1.15 Completed GHRS/1 6083 (The Expanding Chromosphere of a Star)

       The High Resolution Spectrograph ( Side One) was used to make =
spectrographic observations of the Lyman-Alpha emission region of the =
expanding chromosphere of the A class star HD12311.  The observations were =
executed as planned, and no problems were reported.

   1.16 Completed FGS 6049 (Monitoring the Size and Shape of Mira Type =
Stars)

       The FGSs were used to make astrometric observations of the Mira =
class star HD120285 in order to study its size and shape during different =
phases of its pulsation cycle.  The observations were completed as =
planned, and no anomalies were reported.

   1.17 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 : 19
                                        Successful : 19

                          Scheduled Reacquisitions : 26
                                        Successful : 26

   2.2 FHST Updates: 

                              Scheduled : 39
                             Successful : 39

   2.3 Operations Notes: 

       There were no significant operational problems reported during the =
weekend.   

       In addition, the new PRS 8.0 TTAC system was run in parallel with =
the operational string, and no anomalous activity was observed.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH