HUBBLE SPACE TELESCOPE
                               DAILY REPORT #891

PERIOD COVERED:  0800 EST
Daily Status Report as of 140/1200Z.

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed FGS 4031 (High Speed Astrometry - A Search for Planetary 
       Companions to Low Mass)

       The FGSs were used to make astrometric observations of the star
       Proxima Centauri to help determine if there is a Jupiter size planet
       in orbit around the target star. Since the loss of the use of FGS #2
       these observations were taken with one FGS plus gyro guiding. The
       observations were executed as scheduled, and no problems were
       reported. 

   1.2 Uplinked Updated Ephemeris Tables, Per MOSES 2871

   1.3 Completed FOC/96 3801 (Search for QSOs Suitable for Subsequent 
       Observations of He II)

       The Faint Object Camera (f/96) was used to make one image of
       quasi-stellar object 2048+312 in order to measure the levels of its
       ultraviolet flux. This is to determine if the flux levels are high
       enough for subsequent observations with the GHRS and FOS. The
       observations occurred without problems. 

   1.4 Completed GHRS/2 4104 (Ultraviolet Spectral Atlas of O Stars Cycle 2 
       Observations)

       The High Resolution spectrograph was used to make 20 spectral
       observations of sharp lined O class star HD18801. These observations
       will be used to make determinations of its physical parameters by
       comparing the spectra with the predicts of the NON-LTE model
       atmospheres. The first four observations were reported to look
       successful. A status buffer error message was received indicating
       the presence of a carrousel reset problem. The next set of sixteen
       observations were received and displayed. Two of these observations
       did not occur. The previous observation extended three second too
       far, had a subsequent effect on the following observations. 

   1.5 Completed PC 3603 (Snapshot Of Protoplanetary Nebula)

       The Planetary Camera was used to take one snapshot image of the
       protoplanetary system PK058-10D1. The OSS reported that the image
       looked fine. 

   1.6 Completed PC 4714 (WF/PC Cycle 2  Calibration: Internal delta Flats)

       The Planetary Camera was used to make one internal delta flat image
       which will be used for the restoration of Earth flat image, which
       were altered due to changes in quantum efficiency which occurred
       after WFPC decontamination operations. The internal flat
       observations were reported to look normal. 

   1.7 Completed GHRS 3608 (The 12C to 13C Isotope Ratio in Planetary 
       Nebulae)

       The High Resolution Spectrograph was used to make spectral
       observation of planetary nebula SMC-N2 which is located in the Small
       Magellanic Cloud. The observations were executed as scheduled, and
       no problems were reported. 

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

       The Faint Object Camera (f/96) was used to make one ultraviolet
       snapshot image of nearby galaxy UGC-8016. The observation was a ten
       minute exposure, and used filter F220W. The OSS monitored the
       observations, and assessed the data quality. No problems were
       reported. 

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

       The Faint object Spectrograph was used to make spectral observations
       of the nuclear region of Seyfert Galaxy NGC-5548 to look for time
       variations in its continuum, and emission lines in Carbon IV and
       Helium II. The observations were executed as scheduled, and no
       problems were reported. 

   1.10 Completed WFC 4713 (WF/PC cycle 2 Calibration: WFC Internal Delta 
       Flats)

       The Wide Field Camera was used to make a series of internal flat
       observations. These internal flat observations were monitored in the
       OSS, and the data quality was assessed. No problems were reported. 

   1.11 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 which was taken in parallel with the
        primary science observations. This is to help improve the
        efficiency of the telescope throughput, while providing basic
        survey data for a variety of projects. The OSS monitored the
        observations. No problems were reported. 

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 6
                                        Successful : 6
                          Scheduled Reacquisitions : 7
                                        Successful : 7
                                    Losses of Lock : 0

   2.2 FHST Updates: 

                              Scheduled : 11
                             Successful : 11

   2.3 Significant HSTARs: None

   2.4 Operations Note: None

3.0 ACTIVITIES SCHEDULED FOR NEXT REPORTING PERIOD:

   3.1 Complete HSP/UV1 4810 (Constraints on Continuum Models of Active 
       Nuclei: Fast Ultraviolet)

   3.2 Complete WFC 4713 (WF/PC Cycle 2 Calibration: WFC Internal; Delta 
       Flats)

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

   3.4 Complete GHRS/2 3614 (Boron as a Probe of Stellar Structures and 
       Mass Loss)

   3.5 Complete GHRS/2 1206 (Sulfur Near IO Cycle 2)
  
   3.6 Complete FOS/BL 4054 (Probing the Nuclear Regions of Seyfert Galaxy 
       NGC-5548)

4.0 ANOMALY STATUS:
	
   4.1 Significant New Anomalies: None

   4.2 Significant Unresolved Anomalies: None
 
5.0 SIGNIFICANT FORTHCOMING EVENTS: 

       A partial eclipse of the Sun will occur on Friday May 21
       (141/1313-1327Z). A mini-FRR was held yesterday (Wednesday May 19,
       1993) to review its effect on the HST. At the maximum coverage 10.7%
       of the Sun will be obtained. The meeting reviewed the normal
       operational procedures which will be used during the eclipse. The
       status of the battery rate of charge procedures, as well as the
       adjustments needed for the flight software to prevent the Course Sun
       Sensors from giving a false indication were reviewed. 

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