HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1783

PERIOD COVERED:  0000Z (UTC) 12/19/96 - 0000Z (UTC) 12/20/96

Daily Status Report as of 355/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of 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.

   1.2 Completed WF/PC-2 6194 (WF/PC-2 Cycle 5: Polarization Proposal)

       The WF/PC-2 was used to make polarization observations of star =
BD+64D106 at four different spacecraft roll angles.  This should permit a =
detailed and independent calibration of each polarizer quad.  The =
observations were executed as scheduled, and no anomalies were noted. 

   1.3 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 objects QSO-0754+1 in order to study their environment and their =
host galaxies.  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.

   1.4 Completed GHRS/2 6722 (Probing the Chromospheric Structure of =
Alpha Tau)

       The High Resolution Spectrograph (Side Two) was used to make =
spectrographic observations of the K5 III class star Alpha Tau (aka, =
HD29139 or Aldeberan).  The presence of fluorescence H II and Ca II lines =
provides an opportunity to probe the structure of the chromosphere.  A =
wavelength calibration image was also taken.  The observations were =
completed as planned, and no problems were reported. 

   1.5 Completed WF/PC-2 6909 (WF/PC-2 Cycle 6 Calibration: Earth Flats)

       The WF/PC-2 was used to make observations of the bright Earth to =
obtain streak flats which are used to construct high quality flat fields =
for the WF/PC-2 filter set.  The observations were executed as scheduled, =
and no anomalies were noted.

   1.6 Completed FOS/RD 6912 (FOS Cycle 6: Dark Monitoring)

       The Faint Object Spectrograph (Red Side) was used to make =
measurements of the internal background.  All exposures were internals, =
and the spectrographic observations were made in the image mode.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.7 Completed Two Sets of FOS/RD 6914 (FOS Cycle 6: Location of =
Spectra and Wavelength Calibration - Red Side)

       The Faint Object Spectrograph (Red Side) was used to make both a =
TALED and a wavelength calibration image.  All observations were made =
using internal light sources.  This proposal will be executed a total of =
12 time during cycle 6 (i.e., once per month).  The observations were =
executed nominally, with no anomalies.

   1.8 Completed FOS/BL 6682 (Geometry and Generalizability of the =
Reflected Light Model for Seyfert Galaxies)

       The Faint Object Spectrograph (Blue Side) was used to make =
spectropolarimetry observations of the Seyfert (class 2) galaxy =
ESO381-G08 in order to study its geometry and the generalizablity of its =
reflected light model.  The goal is to determine if the polarization =
components of all Seyfert class two galaxies have Seyfert class one =
characteristics.  Approximately 40 minutes into this two-and-a-half hour =
proposal, a loss of lock occcurred.  The observations were completed as =
scheduled, with no reported effect on science. 

   1.9 Completed FOS/BL 6539 (Ultraviolet Spectroscope of Seyfert 2 =
Nuclei)

       The Faint Object Spectrograph (Blue Side) was used to make =
ultraviolet spectrographic observations of the nucleus of the Seyfert =
class two galaxy NGC-5135.  The objective is to determine whether or not =
the featureless continuum is produced by hot massive stars in a =
circumnuclear starburst region.  A wavelength calibration image was also =
taken.  The observations were completed as planned, and no problems were =
reported. 

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 7
                                        Successful : 7
                          Scheduled Reacquisitions : 8
                                        Successful : 8

       A loss of lock occurred at354/1939Z.  HSTAR 5852 was written.

   2.2 FHST Updates: 

                              Scheduled : 13
                             Successful : 13

   2.3 Operations Notes: 

       HST operations personnel transferred to the SAMS backup facility =
at 355/0730Z in preparation for the SM2 JIS.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        JIS #7 (Rendezvous) will be conducted today from approximately =
9:00 a.m. until approximately 9:00 p.m.

/DMH