HUBBLE SPACE TELESCOPE

                              DAILY REPORT #1365

PERIOD COVERED:  0000Z (UTC) 04/07/95 - 0000Z (UTC) 04/10/95

Daily Status Report as of 100/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 5568 (WF/PC-2 Cycle 4 Calibration: Decontamination)

       The WF/PC-2 was used to make an internal flat field calibration
observation using the VIS lamp and the internal source as part of a
decontamination operation. The observations were completed as planned, and no
problems were reported. 

   1.2 Completed FOS/BL 5459 (Ultraviolet Interstellar Polarization: Cycle 4
High)

       The Faint Object Spectrograph (Blue Side) was used to make ultraviolet
spectrographic observations of the bright star HD22253 to study interstellar
polarization along the line of sight to the star. This is to study
interstellar grains that are responsible for the extinction and polarization
of the star light. The observations were executed as scheduled, and no
anomalies were reported.

   1.3 Completed WF/PC-2 5461 (Low Luminosity Stars In Globular Clusters:
Cycle 4 High)

       The WF/PC-2 was used to make observations of the core region of
globular cluster M-4 to look for low luminosity stars.
A color magnitude diagram will be made for these low luminosity stars. The
observations were executed as scheduled, and no anomalies were noted. 

   1.4 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. 

   1.5 Completed GHRS/2 5422 (Neutral Gas in Blue Compact Galaxies:
Population III or Recent Pollution)

       The High Resolution Spectrograph was used to make measurements of the
metallicity of the H II regions in blue compact galaxy UGC-9560. The
observations were executed as scheduled, and no anomalies were noted. 

   1.6 Completed FGS 6151 (Masses of Per-main Sequence Stars: Cycle 4 GO/CAL)

       The FGSs were used to make observations of the pre-main sequence
binary star SAO185689 located in the Taurus star forming region.  The FGS
data will provide the apparent orbits needed to compute the total mass of the
system. The observations were executed as scheduled, and no anomalies were
noted. 

   1.7 Completed FGS 6147 (Extragalactic Astronomy and Astrophysics Final:
Cycle 4 Observations)

       The FGSs were used to make observations of targets 1418+546IN,
620-REF, 621-REF, 622-REF, INCA221-97. The objective of this long-term
program is to determine the rotation of the HIPPARCOS reference relative to
the extragalactic frame. The observations were executed as scheduled, and no
anomalies were noted.

   1.8 Completed WF/PC-2 5397 (Determination of the Extragalactic Distance
Scale: Cycle 4 High)

       The WF/PC-2 was used to make images of galaxy NGC-4414 to be used in
measuring the periods of Cepheid variable stars within this galaxy. The
observations were completed as planned, and no anomalies were noted.

   1.9 Completed Three Sets of FOS/BL 6146 (FOS Location of Spectra and
Aperture - Part 2)

     The Faint Object Spectrograph (Blue Side) was used to conduct a test to
determine the repeatability of positioning the filter-grating wheel. All
observations were internal. A wave length calibration image was also taken.
All observations were executed as scheduled, and no anomalies were noted.

   1.10 Completed WF/PC-2 5493 (Synoptic Monitoring of Seasonal Phenomena on
Mars: Cycle 4 Medium)

       The WF/PC-2 was used to make observations of the planet Mars at
selected seasons, looking for periodic changes. The observations were
executed as scheduled, and no anomalies were noted. 
 
   1.11 Completed Four Sets of WF/PC-2 5132 (A Photometric Search for Planets
of Nearby Stars) 

       The WF/PC-2 was used to make photometric observations of nearby stars
HD128620, HD90839, HD128621, and Proxima-Cen to search for possible planets.
The exposure time was calculated so that area beyond 1.2 arcseconds from the
central star is not saturated. The observations were completed as planned,
and no problems were reported. 

   1.12 Completed 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 MS1110+221 to study the interactions between the
central  engine, the stars, and the interstellar matter in the AGN. The
observations were executed as scheduled, and no anomalies were noted. 

   1.13 Completed FOS/BL 5095 (Spectra at Lambda <3000 Angstroms for QSOs
with Z~2 (FOS 3): Cycle 4)

       The Faint Object Spectrograph (Blue Side) was used to make ultraviolet
spectral observations of the absorption lines and high-ionization emission
lines in B21225+317. A wavelength calibration image was also taken.  The
observations were executed as scheduled, and no problems were noted. 

   1.14 Completed WF/PC-2 6142 (WF/PC-2 Cycle 4 Calibration: Earth Flats,
Smaller Set Part II)

       The WF/PC-2 was used to make Earth Flat calibration images for the
ultraviolet and narrow-band filters to correct for the telescope's
illumination pattern. The observations were executed as scheduled, and no
anomalies were noted.

   1.15 Completed FOS/RD 5664 (Quasar Absorption Line Survey: Cycle 4 High)

       The Faint Object Spectrograph (Red Side) was used to make
spectrographic observations of quasi-stellar object Q1101-264 to look for
absorption lines due to gas in the intergalactic medium and galactic halos.
The observations were executed as scheduled, and no anomalies were noted. 

   1.16 Completed WF/PC-2 5369 (HST Medium-Deep Survey: Cycle 4 Medium, High
Galactic  Latitude) 

       The WF/PC-2 made a series of observations of high latitude objects as
part of a medium deep sky survey. The observations were taken in parallel
with other prime science observations. The observations were completed as
scheduled, and no anomalies were noted.

   1.17 Completed GHRS/2 5466 (The Interaction Between Io and The Plasma
Torus)

        The High Resolution Spectrograph (Side Two) was used to make Echelle
spectrographic observations of the plasma torus which is a result of the
interaction of the planet Jupiter and its moon Io. Of particular interest is
the O II emission line at 2471 A0. The observations were completed and
scheduled, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 17
                                        Successful : 17

                          Scheduled Reacquisitions : 23
                                        Successful : 23

   2.2 FHST Updates: 

                              Scheduled : 14
                             Successful : 13

       Star was not found at 098/2311Z. No impact on operations.

   2.3 Significant HSTARs: None

   2.4 Operations Notes: 

       The data inversions continue at STGT.

       The PDB 42B/PRS 6.1 installation, which began at the end of last week,
has been successfully completed with the release this weekend of backup
resources.  No major problems have been reported.

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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