HUBBLE SPACE TELESCOPE

                              DAILY REPORT #1367

PERIOD COVERED:  0000Z (UTC) 04/11/95 - 0000Z (UTC) 04/12/95

Daily Status Report as of 102/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 5215 (The Martian Surface and Atmosphere)

       The WF/PC-2 was used to make observations of Mars during its current
opposition to study its atmosphere and surface. The purpose is to place more
stringent constraints on the atmospheric water, ozone, airborne dust, surface
optical properties, and iron mineralogy. The observations were executed as
scheduled, and no anomalies were noted.

   1.2 Completed WF/PC-2 5560 (WF/PC-2 Cycle 4 Calibration: Internal Monitor.
1) 

       The WF/PC-2 was used to make several internal bias, K-Spot, and flat
calibration observations to monitor the CCD camera electronics, the optical
alignment, and to check for contamination. The observations were completed as
planned, and no anomalies were noted. 

   1.3 Completed Two Sets of WF/PC-2 5655 (WF/PC-2 Cycle 4 Calibration:
Internal Monitor. 2: Flats Part 2)

        The WF/PC-2 was used to make flats calibration observation images.
The observations were completed as planned, and no problems were reported. 

   1.4 Completed Two Sets of WF/PC-2 5479 (Subarcsecond Structure in Nearby
AGNs)

       The WF/PC-2 was used to make snapshot observations of the nearby
active galactic nuclei of MARK1459, and NGC-7590 to study the interactions
between the central  engine, the stars, and the interstellar matter in these
AGNs. The observations were executed as scheduled, and no anomalies were
noted. 

   1.5 Completed GHRS/2 5724 (Absorption Cloud Physics in Seyfert Galaxy
Nuclei)

       The High Resolution Spectrograph (Side Two) was used to make
observations of Seyfert Galaxy NGC-3783 to study absorption cloud physics in
the nuclear region. A wavelength calibration observations was also taken. The
guide star acquisition at 101/0805Z failed to coarse track during a ZOE
(HSTAR 5174). No other anomalies were noted.

   1.6 Completed FOS/RD 5535 (Cycle 4 Internal Wavelength Calibration)

       The Faint Object Spectrograph (Red Side) was used to make internal
calibration observations to monitor the stability of the wavelength scale for
different gratings. The observations were completed as planned, and no
problems were reported.

   1.7 Completed FOS/RD 6150 (Detecting the Hydroxyl Radical in the Jovian
Magnetosphere)

       The Faint Object Spectrograph (Red Side) was used to make observations
of the abundance of OH in the Jovian magnetosphere near the torus of the moon
Europa. the observations were completed as planned, and no anomalies were
noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 3
                                        Successful : 3

                          Scheduled Reacquisitions : 12
                                        Successful : 11

       Failed reacquisition due to an attitude error at 102/0529Z (HSTAR
5175). The FHST update at 102/0630 corrected the error, and subsequent
observations were successful.

   2.2 FHST Updates: 

                              Scheduled : 9
                             Successful : 9

   2.3 Significant HSTARs: None

   2.4 Operations Notes: 

       The data inversions continue during STGT operations.

       The bit slips on ESTR #2 dumps, first reported last week, are still
occurring.  When the dumps and the re-dumps are merged at the DCF, the
quality of the merged WF/PC-2 observations are improved.  Analysis of the
problem is continuing.

3.0 ANOMALY STATUS:

   3.1 Significant New Anomalies: None

   3.2 Significant Unresolved Anomalies: None

4.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH
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