HUBBLE SPACE TELESCOPE
                               DAILY REPORT #873

PERIOD COVERED:  0800 EST
Daily Status Report as of 116/1200Z.

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three Sets of WFC 4105 (HST Medium Deep Survey: Cycle 1 
       High Latitude))

       The Planetary Camera was used to make one high latitude observation
       taken in parallel with the prime scientific observations. The
       observation was received and displayed. It was reported to be
       satisfactory. 

   1.2 Completed Two Sets of PC 3603 (Snapshots of Protoplanetary Nebulae)

       The Planetary Camera was used to make two observations of the
       protoplanetary system PK051+09D1 to study its current morphology.
       Both observations were displayed, and reported to look
       satisfactory.

   1.3 Completed GHRS/2 4755 (White Dwarf Stars)

       The High Resolution Spectrograph was used to make 13 observations of
       Lyman Alpha spectra from the white dwarf star COD38D109. The onboard
       target acquisition was successful. The spectral observations were
       reported to look okay. 

   1.4 Completed PC/WFC 4109 (WF/PC Cycle 2 Calibration: Rapid Internal 
       Monitor)

       Both the Planetary Camera ands the Wide Field Camera were used to
       make internal flat observations to look for new forms of
       contamination (i.e., daisies and measles), and the possible return
       of quantum efficiency hysteresis. Both observations were received
       and displayed in the OSS. They both were reported to look okay. 

   1.5 Uplinked Updated Ephemeris Tables, Per MOSES 2871

       Uplinked at 114/0012Z, and 116/0012Z. 

   1.6 Completed GHRS/2 3664 (Probing the IS Gas of the Superbubble in LMC2)

       The High Resolution Spectrograph was used to try and make nine
       observations of the OB class star SK70111 which is located in the 
       Super Bubble #2 in the Large Magellanic Cloud. The deflection
       calibration was received. The next eight observations were not
       executed since the baseline guide star acquisition and the following
       reacquisitions failed. The second reacquisition also failed, after
       an ARU/PRT. (See Note 2.1 and 2.4) 
 
   1.7 Completed Three Sets of FOC/96 4804 (UV Imaging of Nearby Galaxies 
       With FOC/96)

       The Faint Object Camera was used to make ultraviolet images of
       nearby galaxy UGC-9013.  Each exposure lasted ten minutes, and used
       filter F220W. The observation were received and displayed in the
       OSS. The target was reported to be barely visible. 

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

       The Faint Object Spectrograph was used to make three spectral
       observations of the nuclear regions of Seyfert galaxy NGC-9013 to
       look for time variability in its continuum, and emission line in
       Helium II and Carbon IV. The observations were executed as
       scheduled, and no problems have been reported. The three
       observations were reported to look fine. 

   1.9 Completed FGS 4820 (Spring Heptathlon)

       The Wide Field Camera and the FGSs were used to determine the focal
       plane and FGS stability, and the relative positions of the SIs.
       Stars in a standard astrometric cluster were acquired by each SI,
       and corresponding images made with the WFC. The observations were
       executed as scheduled, and no problems were reported. The HSP, HRS,
       and FOC observations were reported to be okay. 

   1.10 Completed FGS 4797 (Tie-In Orbits for the Focal Plane Stability Test)

       The FGSs were used to make astrometric observations of standard star
       OP64 to provide measurements of the stability of the focal plane of
       FGS1. Given the current status of FGS 2 its observation was
       deferred. All observations were made in fine lock. The OSS monitored
       the astrometric observations and there was no problems seen in the
       telemetry. 

   1.11 Completed HSP/UV2 4209 (HSP Detector Sensitivity Test)

       The High Speed Photometer was used to make observations of standard
       star VID981 to measure the sensitivity of the HSP IDT detector. The
       observations were executed as scheduled, and no problems were
       reported. 

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

       The FGS were used to make astrometric observations of Barnard's star
       to determine the presence of a possible Jupiter sized planet in
       orbit around the target star. The astrometric observations were
       monitored, and no problems were seen in the telemetry. 

   1.13 Completed FGS 4725 (Scale Cycle 2 Calibration)

       The FGSs were used to make astrometric observations of the standard
       star HD155103 to help calibrate the scale in the central region of
       the astrometric FGS unit. The astrometric observations were
       monitored, and several FGS recentering events were reported to have
       occurred during the observational period. 

   1.14 Completed FGS 3688 (Diagnostic of Early Stellar evolution: Search 
        for Pre-main Sequence Starts)

       FGS 3 was used to make astrometric observation of pre-main sequence
       star 03688 to determine if this star has a companion. The
       astrometric observations were monitored until LOS, and no problems
       were seen in the telemetry. 

   1.15 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 an ultraviolet
       snapshot (A ten minute exposure, using filter F220W) of nearby
       galaxy ESO-1034-2 looking for a possible active galactic nucleus.
       The observations were monitored in the OSS, and no problems were
       reported. 

   1.16 Completed WFC 4770 (WF/PC Cycle 2 Calibration: Internal Monitor 
        Proposal)

       The Wide Field Camera and the Planetary Camera were used to take a
       series of bias, dark, and internal flat observations for routine
       calibration of the instruments. The observations were executed as
       scheduled, and no problems were reported. 

   1.17 Completed Four Sets of WFC 4713 (WF/PC Cycle 2 Calibration: 
        Internal delta Flats)

       The Wide Field Camera was used to make a series of 18 different
       internal delta flat observations each with a different filter. The
       observations were executed as scheduled, and no problems were
       reported. 

   1.18 Completed GHRS/2 4886 (CO on Mars - Cycle 3 - High))

       The High Resolution Spectrograph was used to make ultraviolet
       Cameron band observations of Carbon Monoxide in the atmosphere of
       the planet Mars. The observations were monitored in the OSS, and no
       problems were reported in the telemetry. 

   1.19 Completed FOC/96 3801 (Search for QSOs Suitable for Subsequent 
        Observation of Helium II)

       The Faint Object Camera was used to make ultraviolet flux
       measurements of the Quasar 1033+1342 to determine if the flux levels
       are high enough for subsequent observations. The observations were
       executed as scheduled, and no problems have been reported. 

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 23
                                        Successful : 22

                            144/0046 (See note 1.6 and 2.4)

                          Scheduled Reacquisitions : 19
                                        Successful : 16

                             114/0220, 0358, and 0549Z

                                    Losses of Lock : 0

   2.2 FHST Updates: 

                              Scheduled : 36
                             Successful : 35

                            Error Box failed all three iterations,
                            HSTAR 4032 

   2.3 Significant HSTARs: None

   2.4 Operations Note: 
                            
       HSTAR 4030:  At 144/0046Z, although the pointing appeared to be
       correct there was a FGS acquisition failure. There were no PMTs and
       the search radius limit was exceeded. An attempted ARU/PRT Failed.
       There was very little attitude error.  Subsequent reacquisitions
       failed (114/0220, 0358, and 0549Z). The following proposal was
       successful. The anomaly is being investigated. (See Notes 1.6 and 
       2.1) 

3.0 ACTIVITIES SCHEDULED FOR NEXT REPORTING PERIOD:

   3.1 Complete Two Sets of WFC 4713 (WF/PC Cycle 2 Calibration: Internal 
       Delta flats)

   3.2 Uplink Updated Ephemeris Tables, Per MOSES 2871

   3.3 complete WFC 4105 (HST Medium Deep Survey: cycle 1 High Latitude)

   3.4 Complete Two Sets of FOC/96 4804 (UV Imaging of Nearby Galaxies with 
       FOC/96)

   3.5 Complete WFC 4719 (Morphology of Galaxies in cluster at Z= 0.5 - 
       Cycle 2 DD Program)

   3.6 Complete FOC/96 4821 (Magellanic Cloud Planetary Nebulae: Cycle 3 
       Med)

   3.7 Complete FOC/96 3801 (Search For QSOs Suitable for Subsequent 
       Observation of Helium II)

   3.8 Complete WFC/PC 4109 (WF/PC Cycle 2 Calibration: Rapid Internal 
       Monitor)

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

   3.10 Complete WFC 4770 (WF/PC Cycle 2 Calibration: Internal Delta Flats)

   3.11 Complete GHRS/2 3737 (The Onset of Chromospheric Activity)

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

   3.13 Complete WFC 3917 (HST Medium Deep Survey: Cycle 2 Part 1)

4.0 ANOMALY STATUS:
	
   4.1 Significant New Anomalies: None

   4.2 Significant Unresolved Anomalies: 

       OTA Current Status:

       An "Extended Run-Time" test was executed in FGS 2 SSSA to determine
       the long term effects of "benign" servo angle slews. Results
       indicate that there is no degradation in servo performance during
       continuous large angle slews. In addition, data shows a 0.5 volt
       decrease in Compensated error values from the start to the end of
       the 195 revolution test. This result is not inconsistent with the
       Teflon Transfer Model, where decreasing torques would be expected to
       reach an equilibrium over time for low servo speeds. 

       Process continues to be made in the FGS 2 anomaly resolution. A
       number of steps have been defined to reduce servo wear over time,
       including the reduction of Course Track guidance to almost 0%. 
 
5.0 SIGNIFICANT FORTHCOMING EVENTS: Nothing at this time.

/DMH                        -END-