HUBBLE SPACE TELESCOPE
                               DAILY REPORT #893

PERIOD COVERED:  0800 EST
Daily Status Report as of 144/1200Z.

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WFC 4105 (HST Medium - Deep Survey: cycle 1 High Latitude) 

       The Wide Field Camera was used to make one high latitude medium -
       deep sky survey image taken in parallel with the prime science
       observations. The observation was received and displayed in the OSS.
       There was a recentering event which occurred during the exposure,
       however, the observations was reported to look okay. 

   1.2 Completed Two Sets of PC 4714 (WF/PC Cycle 2 Calibration: PC Internal 
       Delta Flats)

       The Planetary Camera was used to make two internal delta flat
       observations which will be used for the restoration of Earth flat
       images, which were altered due to changes in quantum efficiency
       which occurred during WFPC decontamination operations. Both
       observations were received and displayed. They were reported to look
       okay. 

   1.3 Completed FGS 2941 (High Speed Astrometry - A Search for Planetary 
       Companions to Low Mass)

       The Fine Guidance Sensors were used to make astrometric observations
       of Barnard's star to determine the presence of a Jupiter size planet
       in orbit around the target star. The astrometric observations were
       monitored in the OSS while they had telemetry. No problems were
       seen. 

   1.4 Completed FGS 3688 (Diagnostic of Early Stellar Evolution: Search for 
       Pre-Main Sequential Stars)

       Fine Guidance Sensor #3 was used to make astrometric observations of
       pre-main sequence star 100628 to see if that star may have a
       planetary companion. The astrometric observation occurred completely
       during LOS and could not be monitored. When the telemetry reappeared
       it was noted that the stop flag was set and the search radius limit
       had been exceeded for FGS #3. 

   1.5 Completed FGS 3886 (Orbital Parameter of Known Binary, Sequel)

       Fine Guidance Sensor transfer scans were used to observe a close
       binary star UPGREEN69 near the time of its periastron. The
       astrometric observations were monitored in the OSS, and no problems
       were seen in the telemetry. 

   1.6 Completed FOC/96 4804 (UV Imaging of Nearby Galaxies with FOC/96) 

       The Fine Object Camera (f/96) was used to make one ultraviolet
       observation of nearby galaxy ESO-0430-3. The exposure lasted ten
       minutes, and used filter F220W. The observation was received via the
       science tape recorder playback and displayed in the OSS. The image
       appeared to be normal. 

   1.7 Uplinked Updated Ephemeris Tables, Per MOSES 2871

   1.8 Completed FOS/RD 3858 (The Inner Regions of Quasars: Cycle 2 
       Continuation)

       The Faint Object Spectrograph was used to make snapshot images and
       spectral observations of the active galactic nuclear region around
       the center of quasar B21555+33. The OSS reported that the
       observations appeared to have been completely successful. 

   1.9 Completed Two Sets of WFC 4381 (HST Medium - Deep Survey - Cycle 3)

       The wide Field Camera was used to make two sets of high latitude
       medium - deep sky survey (Cycle 2) observations which were taken in
       parallel with the prime science observations. The observations were
       executed as scheduled, and no problems were reported. 

   1.10 Completed Two Sets of FOS/BL 4054 (Probing the Nuclear Regions of 
        Seyfert Galaxy NGC-5548)

        The Faint Object Spectrograph was used to make two set of
        ultraviolet spectral observations of the central core region of
        Seyfert galaxy NGC-5548, to look for time dependent variations in
        its continuum, and emission line of Helium II and Carbon IV. The
        observations were monitored in the OSS, and the data quality was
        assessed. No problems were reported. 

   1.11 Completed PC 3603 (Snapshot of Protoplanetary Nebulae)

        The Planetary Camera was used to make snapshot images of the
        protoplanetary nebula PK058-10D1 which is thought to be in the
        process of formation. The intent is to study its current
        morphology. The observations were executed as scheduled, and
        monitored in the OSS. No problems were reported, except that the
        core of the target image was saturated. 


   1.12 Completed PC/WFC 4109 (WF/PC Cycle 2 Calibration: Rapid Internal 
        Monitor)
 
        Internal flat observations were made using both the Planetary
        Camera and the wide Field Camera to revile possible changes in
        contamination and the possible return of quantum efficiency
        hysteresis. The OSS monitored to observations and assessed the data
        quality. The observations were reported to look okay. 
 
   1.13 Completed GHRS/2 3463 (Highly Ionized Nitrogen in galactic Halo)

        The High Resolution Spectrograph was used to make ultraviolet
        spectral observations of the active galactic nuclear regions in
        Markarian galaxy MARK509 to look for absorption line of Nitrogen
        IV. The return to brightest option was specified. The target search
        flux was 3321. The confirmation showed the target well centered. A
        recentering event was reported to have occurred during one of the
        spectral observations. The OSS reported that the science
        observations looked good. 

   1.14 Completed HSP/POL 4888(Remnant Stars in Supernova Remnants AUG - 
        Cycle 3 High)

        The High Speed Photometer was used to make observations of the
        supernova remnant SS443 which is known to have emission lines which
        vary in velocity by relativistic amounts in a 162 day period. The
        principal investigator was present to monitor the observations.
        Most of the observations were monitored in real-time. There were no
        problems. 
 
   1.15 Completed FOC/96 3591 (Massive Stars in Star Bursting Galaxies - FOC 
        Images (Part 1))

        The Faint Object Camera was used to make observations of the star
        bursting regions of galaxy NGC-4670. The OSS conducted routine
        monitoring and assessed the data quality. No problems were seen. 

   1.16 Completed FOC/96 4800 (The Stellar Content of Wolf-Rayet Galaxies 
        (FOC Images))

        The Faint Object Camera (f/96) was used to make ultraviolet images
        of Wolf - Rayet galaxy NGC-3049. This star bursting galaxy exhibits
        broad Helium II emission lines from stellar sources. The main goal
        is to determine why this galaxy produces such a large number of
        Wolf - Rayet stars. The observations were executed as scheduled and
        no problems were reported. 

   1.17 Completed WFC 4713 (WF/PC Cycle 2 Calibration: WFC Internal Delta 
        Flats)

        The Wide Field Camera was used to make a series of internal delta
        flat observations to look for new forms of contamination. The
        observations were executed as planned, and no problems were seen. 

   1.18 Completed FOS/BL 4793 (The Extended Featureless Continuum Source in 
        Cygnus A - Cycle 2 Spertr.)

        The Faint Object Spectrograph was used to make spectral
        observations of the Cygnus A. It is known to have an extended,
        unpolarized continuum emission from the nucleus. The strength of
        the Carbon IV lines were to have been measured. The binary search
        for the offset star was received and displayed. It failed,
        producing a status buffer error message indicating "target not
        found". The maximum counts were much below the faint limit.
        Although it was fainter than expected the offset star appeared to
        be well centered., A pointing correction was not attempted. There
        was a guide star recentering event during the observations.
        Subsequent spectral observations showed counts of around five
        counts and twelve. These observations were also reported to have
        had recentering events occur during the observations. 

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 18
                                        Successful : 18
                          Scheduled Reacquisitions : 22
                                        Successful : 22
                                    Losses of Lock : 0

   2.2 FHST Updates: 

                              Scheduled : 36
                             Successful : 36

   2.3 Significant HSTARs: None

   2.4 Operations Note: 

       FGS "Breathing" Test
       --------------------

       A test using all three FGSs is currently under way (Monday, May 24). 
       This test will take repeated astrometry observations using a small
       set of stars to investigate scale changes ("breathing") in the
       spacecraft structure. 

3.0 ACTIVITIES SCHEDULED FOR NEXT REPORTING PERIOD:

   3.1 Complete GHRS/2 4792 (Hydrogen Lyman Alpha Day Glow Emission Line 
       Profiles from Outer Planets)

   3.2 Complete WFC 4929 (WF/PC Cycle 2: Improved Dark Calibration)

   3.3 Complete FGS 2941 (High Speed Astrometry - A Search for Planetary 
       Companions to Low Mass)

   3.4 Complete PC 3603 (Snapshots of Protoplanetary Nebulae)

   3.5 Complete FOC/96 5009 (ST Focus Investigation)

   3.6 Complete FGS 5011 (Astrometry for ST Focus Investigation)

   3.7 Complete FOS/BL 4054 (Probing the Nuclear Regions of Seyfert Galaxy 
       NGC-5548)

   3.8 Complete WFC 4381 (HST Medium - Deep Survey - Cycle 3)

4.0 ANOMALY STATUS:
	
   4.1 Significant New Anomalies: None

   4.2 Significant Unresolved Anomalies: None
 
5.0 SIGNIFICANT FORTHCOMING EVENTS: Nothing at this time.

/DMH                        -END-