HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1496

PERIOD COVERED:  0000Z (UTC) 10/13/95 - 0000Z (UTC) 10/16/95

Daily Status Report as of 289/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of WF/PC-2 5957 (Snapshot of 3CR Radio Galaxies)

       The WF/PC-2 was used to make observations for radio galaxies =
3C305.0 and 3C175.0 to study the morphology of the radio galaxies. The =
observations were executed as scheduled, and no anomalies were noted.

   1.2 Completed WF/PC-2 6119 (Snapshot Survey for Companions of Planetary =
Nebula Nuclei)

       The WF/PC-2 was used to make snapshot survey observations of =
planetary nebula NGC-6884 to study their nuclei and to look for possible =
companions. The observations were executed as scheduled, and no anomalies =
were noted.

   1.3 Completed FOS/BL 6098 (Eclipse Mapping and Tomography of the UV =
Line Emitting Regions of DQ-Her)

       The Faint Object Spectrograph (Blue side) was used in the Rapid =
Mode to make time resolved ultraviolet spectrographic tomographic =
observations of the eclipsing binary system DQ-Her. Observations were made =
in the ultraviolet continuum and using emission lines. The observations =
were executed as scheduled, and no anomalies were noted.

   1.4 Completed WF/PC-2 5971 (HST Medium Deep Survey)

       The WF/PC-2 was used to make a long exposure medium deep sky survey =
observations at latitudes larger than 10 degrees taken in parallel with =
the prime science observations. The observations were executed as =
scheduled, and no anomalies were noted

   1.5 Completed FOS/BL 6155 (Relationship Bewteen Lyman-Alpha Clouds and =
Galaxies at Low Redshift)

       The Faint Object Spectrograph (Blue side) was used to make =
observations of the Lyman-Alpha forest in quasar H1821+643 to study the =
relationship between Lyman-Alpha clouds and galaxies at low redshift which =
are in the same field of view. The FOS peak-up scan did not execute at =
286/12/09Z while guiding on FGS (1,3,1), following a primary guide star =
acquisition. A Loss of Lock Occurred  and a status buffer error message =
was received, HSTAR 5331 was written.

   1.6 Completed WF/PC-2 6253 (Pure Parallel Archive Program)

       The WF/PC-2 was used to execute a pure parallel program taking =
ultraviolet observations running concurrent with prime science =
observations. The intent is to search for extra-galactic sources with flux =
excesses at 3000 A0 and galactic sources with excesses at 1600 A0. The =
observations were completed as planned, and no problems were reported.

   1.7 Completed WF/PC-2 5897 (Ages For the Oldest Star Clusters in the =
Large Magellanic Cloud)

       The WF/PC-2 was used to make observations of star cluster NGC-2257 =
which is known to be one of the oldest clusters in the Large Magellanic =
Cloud. From these data a color magnitude diagram will be constructed that =
extends below the main sequence turnoff. The observations were completed =
as planned, and no anomalies were noted.

   1.8 Completed WF/PC-2 5958 (HST Observations of New Gravitational Lens =
Candidates)

       The WF/PC-2 was used to make observations of object 0956+122 which =
is a candidate for a new gravitational lens system. The observations were =
completed as planned, and no problems were reported.

   1.9 Completed WF/PC-2 6095 (Hot Stellar Populations in Globular Cluster =
Cores)

       The WF/PC-2 was used to make observations of globular cluster =
NGC-1904 to study the radial gradients of the  hot stellar population in =
its core region. Observations were made in the blue, violet and far =
ultraviolet. The observations were completed as planned, and no problems =
were reported.

   1.10 Completed WF/PC-2 6187 (WF/PC-2 Cycle 5 Calibration: Earth Flats)

       The WF/PC-2 was used to make Earth streak flat calibration images. =
These streak flats will be used to produce flat fields, to map the OTA =
illumination pattern and, in combination with other data, to produce new =
superflats. The observations were completed as planned, and no problems =
were reported.

   1.11 Completed WF/PC-2 5999 (The Nuclear Structure of S0 Galaxies: A PC =
Imaging Survey)

       The WF/PC-2 was used to make observations of S0 class NGC-1553 in =
order to study its nuclear structure. This is a part of a large survey of =
S0, E/S0, and S0/a class galaxies. The targets will cover a wide range in =
luminosity and environment. The observations were completed as planned, =
and no anomalies were noted.

   1.12 Completed WF/PC-2 6250 (WF/PC-2 Cycle 5 Calibration: Internal =
Monitor)

       The WF/PC-2 was used to make a series on internal calibration =
observations. Internal flats, biases, and K-Spot calibration images were =
taken. These observations are designed to monitor the health of the =
cameras. The observations were executed as scheduled, and no anomalies =
were noted.

   1.13 Completed GHRS/2/1 5830 (The Small Icy Particles of the A and B =
Rinds of Saturn)

      The High Resolution Spectrograph (Sides One and Two) were used to =
make spectrographic observations of the A and B rinds on the planet =
Saturn. Voyager and IUE spectra show a strong absorption near 1650 A0 that =
may be to small water ice particles and/or water vapor. Observations were =
also made of its moon Rhea. The observations were executed as planned and =
no anomalies were reported.

   1.14 Completed GHRS/2 6056 (Spectroscopy and Imagery of the Orion =
Nebula)

       The High Resolution Spectrograph (Side Two) was used to make =
observations of selected sections of the Orion Nebula (aka, NGC-1976). A =
wavelength calibration image was also taken. The observations were =
completed as planned, and no problems were reported.

1.15 Completed WF/PC-2 5353 (Low-Mass Binaries in the Hyades: Cycle 4 =
High)

The WF/PC-2 was used to make images of the low-mass, late M-Class dwarf =
star RHY138 which is located in the Hyades cluster. Some of the companion =
stars may be brown dwarfs. The guide star acquisition failed at 288/0115Z =
due to F1 star selector compensation error flag. HSTAR 5332 was written.  =
No other anomalies were noted.

   1.16 Completed WF/PC-2 5899 (The Central Structure of the =
Collapsed-Core Globular Cluster NGC-6283)

       The WF/PC-2 was used to make deep image observations of the =
collapsed-core region of globular cluster NGC-6284 to study its central =
structure. The degree of concentration of the core and of different =
components will test theories of dynamical evolution of dense stellar =
systems. The guide star acquisition failed at 288/2065Z. After the =
previous guide star acquisition failed (HSTAR 5332, in 1.15), a large =
vehicle slew and single axis update maneuvers, on FGS #1 (secondary) =
exceeded the search radius. After numerous attempts, both stayed in =
default. A ARU/PRT maneuver was executed at 288/0320Z, and it saved the =
next reacquisition.

There was a Loss of Lock by a star selector compensator error at =
288/0514Z. The reacquisition at 288/0514 occurred in Loss Of Signal (LOS). =
At AOS, the FGS achieved Fine Lock, the F1 star selector compensation =
error A/B was flagged, causing the FGSs to return To SSM control, and then =
began searching again. This happened approximately once per minute for 40 =
minutes. HSTARs 5332 and 5333 were written.

   1.17 Completed WF/PC-2 6215 (Saturn's Aurora and Airglow)

       The WF/PC-2 was used to make ultraviolet observations of the planet =
Saturn in order to study its airglow and auroral regions. The emission of =
Lyman-Alpha, H2 Lyman and the Werner bands were imaged. The observations =
were executed as scheduled, and no anomalies were noted.

   1.18 Completed WF/PC-2  5911 (Massive Star Formation in M-31)

       The WF/PC-2 was used to make observations in the northeast spiral =
arm of NGC-224 (aka, M-31, The Andromeda Galaxy) looking for indications =
of massive star formation. The observations were made using several =
different filters. The observations were completed as scheduled, and no =
anomalies were reported.

   1.19 Completed FGS 6274 (Linking the HIPPARCOS to the Extragalactic =
Referance Frame)

      The FGS#3 was used to make astrometeric observations of =
extra-galactic object 0716+714 and several other reference stars in order =
to help link the HIPPARCOS satellite reference frame to that of the HST. =
The observations were completed as planned, and no anomalies were =
reported.

   1.20 Completed WF/P-2 6254 (GTO Pure Parallel Program - Cycle 5)

       The WF/PC-2 was use to make random long exposures of high galactic =
fields taken in parallel with the prime science observations to obtain a =
random sample of galaxies. The observations were executed as scheduled, =
and no anomalies were noted.

   1.21 Completed WF/PC-2 5700 (Disk Around Main Sequence Stars: Cycle 4 =
Carryover)

      The WF/PC-2 was used to make observations of star HD39060 (aka, Beta =
Pictoris) in order to study the disk around this known main sequence star. =
The objective is to determine the radial profile of the disk, and to fix =
its albedo and temperature profile. The observations were completed as =
planned, and no problems were reported.

   1.22 Completed WF/PC-2 5978 (Host Galaxy of Distant Radio Quasars)

       The WF/PC-2 was used to make observations of the host galaxies of =
distant radio-loud quasars QSO-1031+4 and QSO-1027+4. The observations =
were executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 22
                                        Successful : 19

286/120602Z ( See Operations Note 1.5),
288/011500Z (See Operations Note 1.15), 
and 288020600Z (See Operations note 1.16) 

                          Scheduled Reacquisitions : 19
                                        Successful : 16

286/165000Z, 286/183008Z, and 288/051400Z
Related to the above acquisiton problems (See HSTR 5332 and 5333)

   2.2 FHST Updates: 

                              Scheduled : 43
                             Successful : 43

   2.3 Operations Notes: 

       No operations anomalies were reported.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH
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