HUBBLE SPACE TELESCOPE
                               DAILY REPORT #848

PERIOD COVERED:  0800 EST
Daily Status Report as of 081/1200Z.

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed GHRS/2 3496 (Ultraviolet Atlas of Sirius)

       The High Resolution Spectrograph was used to obtain spectra of the
       star Sirius in the WSCAN Mode to get accurate flux distribution and
       line profiles at ultraviolet wavelenghts. Thirteen observations were
       received and displayed. The onboard target acquisition found the
       target, and the flux counts were 94,930. The following observations
       were reported to look okay, but the wave length calibrations were
       completely swamped by light from the target. 

   1.2 Completed Three Sets of FOC/96 4804 (UV Imaging of Nearby Galaxies
       with FOC/96) 

       The Faint Object Camera (f/96) was used to make ultraviolet 
       snapshots of three different nearby galaxies UGC-5079, UGC-2154, and
       UGC-2669. The first observation was received in real-time, and
       displayed in the OSS. It was reported to look okay. The other two
       observations were taken during LOS, and their observations still
       remain of the science tape recorder. They will be analyzed later. No
       telemetry problems were reported. 

   1.3 Completed PC 4769 (Structure of Quasars and Related Objects)

       The Planetary camera was used to take one long exposures and several
       short exposures of the classic quasi-stellar object 3C273 (which is
       a strong radio source). A total of six observations were received
       and displayed. They all were reported to look okay. 

   1.4 Completed WFC/PC 4109 (WF/PC Calibration: Rapid Internal Monitor)

       Both the Planetary Camera and the Wide Field Camera were used to
       make a series of four internal flat observations using filter F555W.
       This is to check for new forms of contamination (i.e., measles and
       daisies), and the return of quantum efficiency hysteresis. All four
       observations were reported to look okay. 

   1.5 Completed GHRS/2 3468 (UV Molecular Band in HD44179)

       The High Resolution Spectrograph was used to make five ultraviolet
       of object HD44179 (aka, the Red rectangle). The Guide  star
       acquisition was made in course track. The onboard spiral target
       acquisition was executed without problems. The return to brightest
       object option was not used. The target was found in the first map,
       and the final search flux was at 2399 counts. 

   1.6 Completed GHRS/2 3608 (12c-13c Isotope Ratio in Planetary Nebulae)

       The High Resolution Spectrograph was used to make one observation of
       the planetary nebula LMC-N122 which is located in the Large
       Magellanic Cloud. The observations were received and displayed in
       the OSS. They were reported to look okay. 

   1.7 Uplinked Updated Ephemeris Tables, Per MOSES 2871

   1.8 Completed PC 3872 (Blue Stragglers in the Cores of Globular Clusters)

       The Planetary Camera was used to take a series of sixteen images of
       globular cluster NGC-5904 looking for blue straggler stars. All
       sixteen observations were received and displayed in the OSS. They
       all were reported to look okay. 

   1.9 Completed Two Sets of FOS/BL 4097 (FOS Locations of spectra: Y-Base 
       Maps)

       The Y-Base Test was conducted using the Faint Object Spectrograph.
       Images of the internal Pt-Ne lamp were made through the 0.3"
       aperture for every grating. The blues side wave length calibrations
       were executed without problems. They were received and displayed in
       the OSS. Except for some data hits, the observations looked okay.
       One wave length calibrations was received in real time on the red
       side, and looked okay. The other observations were completed during
       LOS, and still remain on the science tape recorder. No problems were
       reported with the telemetry. 

   1.10 Completed WFC/PC 4207 (WF/PC Cycle 2 Calibration: Photometric 
        Calibration Monitor)

        Ultraviolet flux calibrations observations were made using both the
        Planetary Camera and  the Wide Field Camera using standard star
        BD+75D325. All observation were executed in fine lock. The first
        six observations were received and displayed in real time. There
        were some data dropouts noted during the transmission. The next six
        observations occurred during LOS and still remain on the science
        tape recorder. They will be analyzed later. 

   1.11 Complete PC 4593 (Positioning of the Geminga Optical Counterpart)

        The Planetary Camera was used to make observations of the strong
        gamma-ray source called Geminga to obtain an accurate position of
        its optical counterpart. The observation were executed as
        scheduled, and no problems were reported. 

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 12
                                        Successful : 12
                          Scheduled Reacquisitions : 30
                                        Successful : 30
                                    Losses of Lock : 0

   2.2 FHST Updates: 

                              Scheduled : 27
                             Successful : 27

   2.3 Significant HSTARs: None

   2.4 Operations Note: 

       The PCS subsystem was nominal the weekend. The gyros were placed in
       high mode for two HGBU data takes. The first data take was at
       078/2224Z to 079/0128Z. A second HGBU data take was done on
       Day 080. The analysis of the data takes seems to indicated the
       Gyro-5 (G5) has begun to settle down at a new value as seen from the
       gyro bias in sensor space. 

3.0 ACTIVITIES SCHEDULED FOR NEXT REPORTING PERIOD:

   3.1 Complete FOS/BL 4222 (Mass Exchange Binaries- Cycle 1,Final Piece)

   3.2 Complete WFC 1297 (GTO High Latitude Parallel Program)

   3.3 Complete WFC 4658 (Determination of the Extragalactic Distance 
       Scale, M101)

   3.4 Complete PC 3603 (Snapshot  of Protoplanetary Nebulae)

   3.5 Complete FOC/96 4804 (UV Imaging of Nearby Galaxies With FOC/96)

   3.6 Complete GHRS/2 4066 (GHRS Echelle Spectral Lamp Mini-Functional 
       Test)

   3.8 Complete PC 4140 (WF/PC Cycle 2 Calibration: Rapid Internal Monitor 
       Part 2)

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.

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