HUBBLE SPACE TELESCOPE
                               DAILY REPORT #966

PERIOD COVERED:  0800 EST
Daily Status Report as of 250/1200Z.

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of PC 5014 ()WF/PC Cycle 3 Calibration: PC Flats

       Narrow. 2

       The Planetary Camera was used to make six standard Earth
       calibrations images for flat fielding of PC observations. Medium and
       narrow filters were used, with and without neutral density filters.
       The observations were executed as scheduled, and four of the images
       were reported to be okay, and two were underexposed. 

   1.2 Completed FGS 4892 (Duplicity Among Hyades Stars - Cycle 3 High)


       The FGSs were used to make three sets of astrometric observations of
       the possible binary stars VA747, VA 292, and VA 119 which is located
       in the Hyades open cluster. The OSS monitored the observation, and
       no anomalies were reported. The first two observations were received
       and displayed in real-time, and the last occurred during LOS. 

   1.3 Completed FGS 4893 (Orbital Motions of Close Binary Stars - Cycle 3

       High) 

       Fine Guidance Sensor #3 was used to make astrometric observations of
       the binary star system HD16739 to obtain its orbital elements.
       These observations are important since most of the estimates of
       stellar mass are made by observing elements of these systems. The
       astrometry was monitored and no problems were seen in the telemetry.
       The first few minutes of the observations were missed because the
       engineering link was down. 

   1.4 Completed PC 4644 (The Nuclei of Nearby S0 and Spiral Galaxies -I A

       PC Snapshot Imaging Survey) 

       The Planetary Camera was used to make one snapshot observation of
       the spiral galaxy NGC-278. The observations used filter F555W and
       chip PC6. The exposure lasted 300 seconds. The observations was
       received and displayed, and no anomalies were noted. 

   1.5 Completed Three Sets of PC 4714 (WF/PC Cycle 2 Calibration: PC

       Internal Delta Flats)

       The Faint Object Camera was used to make Three sets of internal flat
       calibration images which will be used for the restoration of Earth
       flat images. These were altered due to changes in quantum efficiency
       which occurred after decontamination operations. The observations
       was received and displayed in the OSS. It was reported to look okay.


   1.6 Completed FOC/96 4546 (Imaging of UV Bright Stars in the Galactic

       Bulge)

       The Faint Object Camera was used to make eight observations of the
       bright ultraviolet star SGR-I which is located in Baade's Window.
       The observations were executed as scheduled. Recentering events were
       reported to have occurred during some of the observations. The
       images were examined, and no anomalies were noted. 

   1.7 Completed Four Sets of WFC 5013 (WF/PC Cycle 3 Calibration: WFC

       Flats Narrow. 2) 
  
       The Wide Field Camera was used to make six Earth flat calibration
       images to be used for flat fielding of WFC observations. The
       observations used the narrow band filters, both with and without
       neutral density filters. A total of six observations were received.
       One observation was reported to be saturated, three were
       underexposed, and the last was okay. 

   1.8 Completed Two Sets of GHRS/2 5039 (GHRS Dark Noise Monitoring -

       Cycle 3) 

       The High Resolution Spectrograph was used to make dark calibration
       images. The photoscan mode was used with an integration time of 10
       seconds and with seven bins, for a read-out every 70 seconds. There
       was no carousel motion. Observations were taken both inside and
       outside the small science aperture. The observations were received
       and displayed. No anomalies were reported. 

   1.9 Completed FOS/BL 4662 (Exploring Triton's UV Spectrum: The first
       1800 - 2500 Ao UV Survey) 

       The Faint Object Spectrograph was used to make observations of the
       moon Triton between 1800 and 2500 A0. This region has not been
       observed before. They are looking for CO, NO, and hydrocarbon
       absorption lines in its spectra. The OSS monitored the observations,
       and assessed the data quality. Two recentering events were reported
       to have occurred. The images were examined and no anomalies were
       noted. 

   1.10 Completed WFC/PC 5026 (WF/PC Cycle 3 Calibration: Rapid Internal

       Monitor)

       The Wide Field Camera and the Planetary Camera were used to make
       two internal flat calibration images. These images will be used to
       look for measles and daisies (i.e., different forms of
       contamination), and to monitor scattered light. Both observations
       were executed as scheduled, and no problems were reported. 

   1.11 Completed HSP/POL 4888 (Remnant Stars in Supernova Remnants -

       Augmentation - Cycle 3 High)

       The High Speed Photometer was used to make 17 ultraviolet
       polarmetric observations of super nova remnant SS433 which has
       emission lines that vary by relativistic amounts in a 162 day cycle.
       All seventeen observations were received and displayed. They were
       reported to look okay. 

   1.12 Uplinked Updated Ephemeris Tables, Per MOSES 2871 

   1.13 Completed PC 4664 (Astrophysics Study of the Blue Stragglers in 47
       Tuanae: Cycle 3 High) 

       The Planetary Camera was used to make a large series of around 100
       images of the star cluster 47 Tucanae covering a contiguous period
       of 36 hours. The purpose of these observations is to find a large
       number of the blue straggler stars with pulsations in the range of
       0.9 to 4.6 hours. Also, they are looking for contact and cataclysmic
       binary stars. The distribution of the orbital period of these
       binaries will help to determine whether such binaries seen among
       field stars was originally formed in globular clusters and later
       ejected. A total of 39 tape recorder dumps were needed to play back
       all the science observations. All the tape playbacks were
       successful. A total of five recentering events were reported to have
       occurred during this 36 hour observational period. All of the
       observations were reported to look okay. 

   1.14 Completed FOS/BL 4212 (Internal Wavelength Calibration) 
 

       The Faint Object Spectrograph was used to make wavelength
       calibration observations for every disperser-detector combination,
       to monitor the stability of the FOS wave-lenght scale. A total 34
       observations were made. They all were received and displayed. No
       anomalies were noted. 

   1.15 Completed FOS/BL 4260 (Extreme Stellar Winds and Post - Main -

       Sequence Evolution )

       The Faint Object Spectrograph was used to make observations of star
       BE294. This star is believed to be intermediate between a class O
       and WR star and to have strong winds and high mass loss rate (i.e.,
       much higher than normal O class stars). The baseline guide star
       acquisition failed to obtain fine lock, but made course track. The
       target was well centered. The observations were reported to look
       okay. 

2.0 FLIGHT OPERATIONS SUMMARY: 

    2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 14
                                        Successful : 14
                          Scheduled Reacquisitions : 26
                                        Successful : 26

   2.2 FHST Updates: 

                              Scheduled : 23
                             Successful : 23

   2.3 Significant HSTARs: None

   2.4 Operations Note: 

       DF-224 Flight Software 
       ------------------------------

       DF-224 Flight Software version 9.1 was installed on the on-board
       computer.  FSW 9.1 included a correction in the scaling factor used
       in the on-board HGA control law and added servicing mission
       capabilities for interfacing with the coprocessor when it is
       installed. The 9.1 installation was accomplished as planned and in
       parallel with on-going operations so there was no science impact.

 

       Servicing Mission Simulations

       -------------------------------------- 

       A successful multi-day joint simulation of the first part of the HST
       servicing mission was executed.  This was a major simulation
       involving JSC, GSFC, KSC, and HQ.  The end of EVA-1 and EVA-2 days
       through replanning shifts were spanned.  Solar array, ECE, SADE,
       fuse plug changeouts, and extensive replanning were covered. Both
       orbiter and HST anomalies were introduced and were handled
       effectively by the servicing mission team.. 

3.0 ACTIVITIES SCHEDULED FOR NEXT REPORTING PERIOD:

   3.1 Complete WFC/PC 5026 (WF/PC Cycle 3 Calibration: Rapid Internal

       Monitor)

   3.2 Complete PC 5014 (WF/PC Cycle 3 Calibration: PC Flats Narrow. 2)

   3.3 Complete WFC 5025 (WF/PC cycle 3 Calibration: Photometric

       Calibration: Monitor)

   3.4 Complete FOS/BL 3803 (Pluto's FUV spectrum: CO Abundance and FUV

       Survey)

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-