HUBBLE SPACE TELESCOPE

                              DAILY REPORT #1345

PERIOD COVERED:  0000Z (UTC) 03/10/95 - 0000Z (UTC) 03/13/95

Daily Status Report as of 072/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed WF/PC-2 5370 (HST Medium-Deep Survey: Cycle 4 Medium, High
Galactic Latitude)

       The WF/PC-2 was used in parallel with the prime science observations
to make high galactic latitude observations as part of a medium-deep sky
survey. The observations were completed as planned, and no problems were
reported. 

   1.2 Completed WF/PC-2 5637 (Stellar Populations in Dwarf Spheroidal
Galaxies: Cycle 4)

       The WF/PC-2 was used to make observations of a dwarf spheroidal galaxy
in the Fornax-Cluster to study its stellar population. Observations will be
made using two different filters. HR diagrams will be constructed and the
ages, metallicities, and luminosity functions will be found. The observations
were completed as planned, and no anomalies have been
reported. 

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

        The WF/PC-2 was used to make a visual flat. The observation was
completed as planned, and no problems were reported. 

   1.4 Completed Four 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 Mark1370, IC4870, IR0438-084 and NGC-5253 to study
the interactions between the central  engine, the stars, and the interstellar
matter in their AGNs. The observations were executed as scheduled, and no
anomalies were noted. 

   1.5 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 HD36629 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.

   1.6 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.

   1.7 Completed Three Sets of 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. K-Spot and Dark calibration images were also
taken. The observations were completed as planned, and no problems were
reported. 

   1.8 Completed Two Sets of WF/PC-2 5490 (Exposing the Evolution of Distant
Field Galaxies: Imaging in Mid UV)

       The WF/PC-2 was used to make observations of distant field galaxies
13HR-A and 13HR-B. The objective is to study the morphology, interactions,
and the star formation regions. The observations were executed as scheduled,
and no anomalies were reported.

   1.9 Completed WF/PC-2 5562 (WF/PC-2 Cycle 4 Calibration: Internal Monitor
3: Darks)

       The WF/PC-2 was used to obtain several 30-minute long, dark exposures
to provide ongoing calibration of the CCD dark current and to monitor and
characterize the evolution of hot pixels. The observations were executed as
scheduled, and no anomalies were noted. 

   1.10 Completed WF/PC-2 5663 (WF/PC-2 Cycle 4: Photometric Calibration
Monitor: Fields Part 2)

       The WF/PC-2 was used to make observations of globular cluster NGC-5139
with various filters in order to check the photometric calibration of the
WF/PC-2. The observations were completed as planned, and no anomalies were
reported. 

   1.11 Completed GHRS/2 5673 (Cepheid Masses: Cycle 4 High, Part 2)

       The High Resolution Spectrograph (Side Two) was used to make
observations of Cepheid star HD66591-CA to measure its radial velocity. A
wavelength calibration image was also taken. The GHRS encountered a fine
X-null balance failure at 069/2341Z (HSTAR 5151). The number of fine
corrections during the target acquisition observation exceeded the maximum
permitted. No other anomalies were noted.

   1.12 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. 

   1.13 Completed GHRS/2  5487 (Chemical and Physical Processes in Dense
Interstellar Clouds: Cycle 4 Medium)

       The High Resolution Spectrograph (Side Two) was used to make
observations of standard star HD24534 (aka, X-Per) to study the chemical and
physical processes in dense interstellar clouds which lies along the line of
sight to the star. The observations were executed as scheduled, and no
anomalies were noted. 

   1.14 Completed FOS/BL 5444 (A UV Spectral Library of Metal- Poor Massive
Stars) 

       The FOS (Blue Side) was used for a snapshot program to obtain
ultraviolet spectra of AV26 a metal-poor star in the LMC.  It will be useful
for stellar atmosphere and stellar evolution studies. The observations
completed without incident. 

   1.15 Completed GHRS/1 5317 (Searching for circumstellar Gas Around Low
Mass Per-Main Sequence Stars) 

       The High Resolution Spectrograph (Side One) was used to make
spectroscopic observations of the low mass, pre-main sequence star BD+19D706.
A wavelength calibration image was also taken. The observations were executed
as scheduled, and no anomalies were noted. 

   1.16 Completed FOS/BL 5530 (FOS Location of Spectra and Aperture)

       The Faint Object Spectrograph (Blue Side) was used to make Y-base maps
of the FOS detectors using internal lamps. The purpose is to determine the
location of the spectra on the diodes. The observations were executed as
scheduled, and no anomalies were noted. 

   1.17 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.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 15
                                        Successful : 15

                          Scheduled Reacquisitions : 30
                                        Successful : 30

   2.2 FHST Updates: 

                              Scheduled : 33
                             Successful : 33

   2.3 Significant HSTARs: None

   2.4 Operations Notes: 

       Shuttle operations have been having an impact on some of the HST
pre-scheduled supports.  So far, however, all tape recorder dumps have been
accomplished and no critical operational support has been denied.

       The data inversions at STGT continue.  On one occasion, there was a
command problem at STGT, but a failover of SSA-1 corrected the problem.

       At 070/0041Z, there was a DF-224 command reject due to a command
timing error.  The problem was corrected by the execution of an established
contingency procedure.  HSTAR 5152 was written to document the occurrence.

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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