HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1533

PERIOD COVERED:  0000Z (UTC) 12/08/95 - 0000Z (UTC) 12/11/95

Daily Status Report as of 345/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 6277 (Stellar Populations in the Magellanic =
Clouds)

       The WF/PC-2 was used to make observations of the Magellanic Cloud =
globular cluster NGC-1818 to study its stellar populations.  This will =
study the mass function within the globular cluster.  The observations =
were completed as planned, and no anomalies were noted.

   1.2 Completed FGS 6040 (Ultra-High Angular Resolution of O3 Stars in =
the Carina Nebula)

       The FGSs were used in the TRANS Mode to make ultra-high resolution =
astrometric observations of the O3 class star LMC-053705 which is located =
in the Large Magellanic Cloud.  This is to determine if this object is a =
single star or a multiple star system.  The observations were completed as =
scheduled, and no anomalies were reported. 

   1.3 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.

   1.4 Completed GHRS/1 6070 (Interstellar Tin: Probing Galactic S-Process =
Element Enrichment)

       The High Resolution Spectrograph (Side One) was used to make =
Echelle A observations of star HD24398 in order to probe for interstellar =
tin and to study the galactic S-process neutron capture of element =
enrichment.  The observations were completed as planned, and no problems =
were reported.

   1.5 Completed Two 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-3198 =
and NGC-2541 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.

   1.6 Completed 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.  A Taled calibration =
observations was also taken.  The observations were completed as planned, =
and no anomalies were reported.

   1.7 Completed WF/PC-2 5904 (Primordial Mass Segregation and Main =
Sequence Age Spreads in Young LMC Stars)

       The WF/PC-2 was used to make observations of young cluster NGC-2157 =
which is located in the Large Magellanic Cloud in order to study the =
primordial mass segregation and the main sequence age spread of its young =
stars.  The observations were executed as scheduled, and no anomalies were =
noted. 

   1.8 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.

   1.9 Completed GHRS/1 5945 (Diffuse Helium Absorption as a Probe of =
Quasar History)

       The High Resolution Spectrograph (Side One) was used to make =
observations of diffuse helium absorption lines in the spectra of quasar =
Q0302-0019 to confirm the detection of intergalactic helium by the FOC.  =
The observations were completed as planned and no anomalies were reported.

   1.10 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.

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

       The WF/PC-2 was used to make snapshot images of radio galaxy 3C99.0 =
as part of a continuum survey and to study the galaxy's morphology.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.12 Completed FOS/RD 6059 (Imaging Low-Mass Companions of Nearby =
Stars)

       The Faint Object Spectrograph (Red Side) was used to make =
observations of low-mass nearby star GL1245AC to search for possible faint =
companions.  The bright star was placed behind an occulting bar.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.13 Completed WF/PC-2 5999 (The Nuclear Structure of S0 Galaxies: A PC =
Imaging Survey)

       The WF/PC-2 was used to make observations of S0 class galaxies =
NGC-1375, ESO118-034 and NGC-6703 in order to study their nuclear =
structure.  This is a part of a large survey of S0, E/S0, and S0/a class =
galaxies.  The targets will cover a wide range in luminosity and =
environment.  The observations were completed as planned, and no anomalies =
were noted.

   1.14 Completed FOS/BL 5851 (Post Asymptotic Giant Branch Evolution in =
the Magellanic Clouds)

       The Faint Object Spectrograph (Blue Side) was used to make =
ultraviolet observations of the planetary nebula LMC-SMP101 which is =
located in the Large Magellanic Cloud.  Extensive ground-based and HST =
observations and imaging work has already been done on this object.  The =
observations were completed as planned, and no problems were reported.

   1.15 Completed WF/PC-2 5916 (The Oldest Globular Clusters in the Large =
Magellanic Cloud)

       The WF/PC-2 was used to make observations of the metal-poor =
globular cluster NGC-1898 which is known to be the one of the two  oldest =
globular clusters located in the Large Magellanic Cloud.  The observations =
were completed as planned, and no anomalies were reported.

   1.16 Completed GHRS/2 5887 (The Depletion Behavior of Chromium Relative =
to Zinc )

       The High Resolution Spectrograph (Side Two) was used to make =
observations of star SK-68D73 which is located in the Large Magellanic =
Cloud.  The intent is to measure the relative abundances of Cr II relative =
to Zn II in the interstellar medium.  Because zinc does not deplete onto =
dust grains while chromium does, their abundance ratio measures dust =
distribution.  A wavelength calibration image was also taken.  Near the =
beginning of this proposal, at 344/042837Z there was a brief loss of fine =
lock during which the take data flag went down.  HSTAR 5399 was written to =
document this event.  Otherwise, the observations were completed as =
planned, and there were no reported anomalies

   1.17 Completed FGS 6271 (L726-8/UV Ceti)

       The FGSs were used to make astrometric observations of the binary =
star L726/UV Ceti to search for a short period low-mass companion around =
either component of this binary object.  The observations were executed as =
scheduled, and no anomalies were reported.

   1.18 Completed WF/P-2 6254 (GTO Pure Parallel Program - Cycle 5)

       The WF/PC-2 was use to make random long exposures of high galactic =
fields taken in parallel with the prime science observations to obtain a =
random sample of galaxies.  The observations were executed as scheduled, =
and no anomalies were noted.

   1.19 Completed FOS/RD 6110 (Abundances of Evolved Massive Stars in the =
LMC)

       The Faint Object Spectrograph (Red Side) was used to make =
spectrographic observations of the ejecta from the evolved luminous =
massive star R143, which is located in the Large Magellanic Cloud.  This =
star is at a point in its evolution between an O class star and a =
Wolf-Rayet class star, and the spectra will be used to determine the =
elemental abundances and electron temperatures and densities.  The =
observations were executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 20
                                        Successful : 20

       The was a brief loss of fine lock at 344/042837Z.
       HSTAR 5399 was written.

                          Scheduled Reacquisitions : 15
                                        Successful : 15

   2.2 FHST Updates: 

                              Scheduled : 38
                             Successful : 38


   2.3 Operations Notes: 

       HST operations continue to be performed uneventfully from the SEER =
as the MOR/SMOR is undergoing refurbishment.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH