HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1621

PERIOD COVERED:  0000Z (UTC) 04/25/96 - 0000Z (UTC) 04/26/96

Daily Status Report as of 117/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 GHRS/1/2 6291 (Uranus: Lyman-Alpha and H2 Survey)

      The High Resolution Spectroscope (Sides One and Two) were used to =
make ultraviolet observations of the planet Uranus, and its moon Titania. =
 This is to search for Lyman-Alpha and molecular hydrogen emission, as =
well as other species generated by ion chemistry in the intense aurora =
and ionosphere.  A wavelength calibration image was also taken.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.2 Completed FGS 6262 (High Speed Astrometry - Barnard's Star)

       The Fine Guidance Sensors were used to make high speed astrometric =
observations of Barnard's Star and seven reference stars.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.3 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 GAL-130009 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.

   1.4 Completed FOC/96 6057 (Ultra--High Resolution Studies of AGNs II: =
3C279 Proper Motion)

       The Faint Object Camera (f/96) was used to make ultra-high =
resolution pictures of active galactic nuclei in radio galaxy 3C279 in =
order to study the small scale morphology of the AGN.  The data will be =
searched for evidence of superluminal motion, which is known radio =
observations, and for time variable phenomena.  The observations were =
executed as scheduled, and no anomalies were noted.

   1.5 Completed WF/PC-2 5994 (HST Images of New Candidates For Distant =
Proto-Ellipticals)

       The WF/PC-2 was used to make an observation of blue compact galaxy =
SA57-17731 in order to measure its size, light profiles, and color.  The =
observation was executed unevenfully as scheduled.

   1.6 Completed Two 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.  The observations were =
completed as planned, and no anomalies were reported.

   1.7 Completed Two Sets of WF/PC-2 6359 (Core Properties of the Bulges =
of Spiral Galaxies)

       The WF/PC-2 was used to make snapshot survey observations of =
spiral galaxy NGC-3900 in order to study its central bulges.  The aim is =
to investigate the core properties, correlation's with global galactic =
properties, and the frequency of occurrence of multiple and/or =
miscentered nuclei.  The observations were completed as scheduled, and no =
anomalies were noted.

   1.8 Completed FOS/BL 6202 (Cycle 5 FOS Spectral Flat Field =
Calibration)

       The Faint Object Spectrograph (Blue Side) was used to make =
observations of the relatively featureless white dwarf star WD0501+527 in =
order to make flat field calibration images.  The observations were made =
through the 1.0 aperture, with all usable detector/disperser =
combinations.  As described in 2.1 below, there was a problem with the =
initial acquisition in this 10.5 hour proposal.  HSTAR 5582 was also =
written to document an FOS status buffer message at 116/191419Z =
indicating that the HST was not considered stable, and that the take data =
flag was down.  Operations personnel saved the remainder of the proposal =
by commanding the FOS door open at 116/2304Z.  Otherwise, the remaining =
observations were executed with no further problems.

   1.9 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 wi=
th no anomalies.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 11
                                        Successful : 10

       As documented in HSTAR 5583, the acquisition at 116/190119Z =
initially failed when the search radius was exceeded.  The second attempt =
also failed for the same reason.  Subsequently, the return to RGA control =
also failed, possibly due to conflict with the on-going FOS dwell scan.  =
The re-acquisition at 116/2032Z was successful.

                          Scheduled Reacquisitions : 7
                                        Successful : 7

   2.2 FHST Updates: 

                              Scheduled : 18
                             Successful : 18

   2.3 Operations Notes: 

       There were no significant operational problems.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        The dry run for SMGT-22, Part 1 is being run today.

/DMH