HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1855

PERIOD COVERED:  0000Z (UTC) 04/11/97 - 0000Z (UTC) 04/14/97

Daily Status Report as of 104/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

*************************************
        Zero gyro safemode occurred at approximately  099/171712Z.  The =
following scheduled observations could not be executed due to the =
safemode event:
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   1.1 NIC/1/2/3 7150 (NICMOS Coarse Optical Alignment: 
       Part 2)
   1.2 WF/PC-2 6887 (A Photometric Search for Faint 
       Companions to Nearby Stars)
   1.3 STIS/CCD 7063 (STIS SMOV CCD Contamination Monitor)
   1.4 WF/PC-2 6346 (Snapshot Survey of the Ultraluminous IRAS 
       Galaxy Sample-Part 1 High)

********************************
       Resumption of normal science and SMOV operations occurred as =
scheduled at 101:1600z (Saturday, April 12,1997).
********************************

   1.5 Completed WF/PC-2 6559 (An Imaging Study of Asteroids)

       The WF/PC-2 was used to make multi-color observations of the main =
belt asteroid 29-AMPHITR.  This asteroid will reach perigee during Cycle =
6.  The images will be searched for companions.  The observations were =
executed as scheduled, and no anomalies were noted.

   1.6 Completed Five Sets of WF/PC-2 6361 (High Resolution Imaging of =
X-Ray Selected AGNs)

       The WF/PC-2 was used to make high resolution  observations of the =
known, low, red-shifted, x-ray, active galactic nuclei (AGN) MS0457.9+0, =
MS1019.0+4, MS0844.9+1, MS0905.6-0, MS1217.0+0 and MS1220.9+1.  These =
data will allow a study of the optical properties of an unbiased sample =
of AGN host galaxies.  A Guide Star Acquisition Failed to the SSM control =
due to a FGS # 3 Stop Flag at 102/1934Z.  WF/PC-2 observations 105 =
throught 108 were impacted.  No other anomalies were noted.

   1.7 Completed WF/PC-2 7029 (WF/PC-2 Cycle 6/SMOV Lyman-Alpha =
Check-Part 2)

       The WF/PC-2 was used to make observations of WD0310-688 in order =
to obtain far-ultraviolet (Lyman-Alpha) measures of the system's =
throughput.  This is to quantify any contamination of the WF/PC-2 =
pick-off mirror caused by SMOV activities.  The observations were =
completed as planned, and no anomalies were reported.  

   1.8 Completed Two Sets of WF/PC-2 6359 (Core Properties of the Bulges =
of Spiral Galaxies)

       The WF/PC-2 was used to make snapshot survey observations of =
spiral galaxies NGC-5121 and NGC-3045 in order to study their central =
bulges.  The aim is to investigate the core properties, correlations with =
global galactic properties, and the frequency of occurrence of multiple =
and/or miscentered nuclei.  The observations were completed as scheduled, =
and no anomalies were noted.

   1.9 Completed WF/PC-2 6816 (The Small Scale Structure and Symmetries =
in Proto-Planetary and Young Planetary Nebulae)

       The WF/PC-2 was used to make observations of ROBERTS22 in order to =
study its small scale structure and summetries.  Proto-planetary and =
young planetary nebulae show a dazzling variety of non-spherical =
morphologies, whereas the circumstellar envelopes of the AGB red giant =
stars from which they evolve are mostly round.  The observations were =
executed as scheduled, and no anomalies were noted. 

   1.10 Completed WF/PC-2 6837 (The Ultraviolet Properties of "Dwarf" =
Seyfert 1 Nuclei)

       The WF/PC-2 was used to make ultraviolet observations of the =
"dwarf", type one, Seyfert galaxy NGC-4772.  This class of "dwarf" =
Seyferts populate the faint end of the local AGN luminosity function and =
hold important clues to the evolution of the entire AGN population.  The =
observations were completed as scheduled, and no problems were reported. 

   1.11 Completed STIS/CCD 7092 (CCD Dark Rate and Read Noise)

       Observations were taken to measure CCD dark current and gather =
data for making super darks.  The observations were completed as planned, =
and no anomalies were reported. 

   1.12 Completed WF/PC-2 6363 (The Environments and Host Galaxies of =
BL-Lac Objects)

       The WF/PC-2 was used to make snapshot survey observations of =
BL-Lac objects OJ287 and PKS0823+03 in order to study their environment =
and their host galaxies.  The goal is to investigate systematic trends in =
host galaxy type, unusual morphological features, nearby companion galaxie=
s, etc.  The observations were executed as scheduled, and no anomalies =
were noted.

   1.13 Completed Two Sets of WF/PC-2 6346 (Snapshot Survey of the =
Ultraluminous IRAS Galaxy Sample-Part 1 High)

       The WF/PC-2 was used to make snapshot survey observations of the =
ultraluminous IRAS galaxies QDOTULIR05 and QDOTULIR14.  These data will =
be searched for multiple cores, which imply a merger has occurred, and =
for starburst regions.  The observations were executed as scheduled, and =
no anomalies were noted.

   1.14 Completed WF/PC-2 6436 (High-Resolution Narrow-Band Imaging of =
Liners, in Search of Their Central Engines)

       The WF/PC-2 was used to make high-resolution, narrow-band =
observations of the galaxy NGC4569 in order to search for its central engi=
ne and to try to image its liner.  More than 30% of all galaxies contain =
liner nuclei, which may be the weakest but most common manifestation of =
quasar activity.  The observations were completed as planned, and no =
problems were reported. 

   1.15 Completed WF/PC-2 6740 (Hyper-Luminous IRAS Galaxies: Star =
Formation, AGN or LENSES?)

       The WF/PC-2 was used to make observations of the hyper-luminous =
IRAS galaxy FSC12358+1 in order determine if its luminous state is a =
result to its being a gravitational lens system or an active galactic =
nuclei (AGN) system.  This IRAS galaxy is known to emit an enormous =
amount of power (>10^13 LSUN) in the far infrared.  The observations were =
completed as planned, and no anomalies were reported. 

   1.16 Completed Two Sets of WF/PC-2 6345 (Determining the Binary =
Frequency for Ultra-Cool, Nearby M Dwarf Stars)

       The WF/PC-2 was used to make observations of ultra-cool, nearby, M =
class dwarf star LHS2397A  to determine the frequency for it being binary =
systems and try to detect stellar and sub-stellar companions.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.17 Completed NIC/1/2 7111 (Orion OMC-1)

       The Near Infrared Cameras (Cameras One and Two) were used to make =
observations of Orion's Molecular Cloud (Regions OMC=3DHH10, OMC-2A anf =
OMC-HH1).  The NICMOS should reveal intriguing morphological details, =
imaging the multiple finger-like features radiating from these regions =
with high spatial resolution.  A dark calibration image was also taken.  =
The observations were completed as planned, and no anomalies were noted. 

   1.18 Completed WF/PC-2 6583 (The Origin of the Alignment Effect: =
WF/PC-2 Imaging Polarimetry of High Redshift Radio Galaxies)

       The WF/PC-2 was used to make imaging polarimetry observations of =
the high redshifted galaxy 3C265.  These polarimetric observations are =
crucial to the understanding of the spectacular morphologies recently =
discovered in high redshift radio galaxies by HST, and to the =
investigation of morphological and evolutionary links between radio =
galaxies and quasars.  The observation were completed as scheduled, and =
no anomalies were reported. 

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 32
                                        Successful : 31

A Guide Star Acquisition Failed to the SSM control due to a FGS # 3 Stop =
Flag at 102/1934Z (See Activities Item 1.6)

                          Scheduled Reacquisitions : 12
                                        Successful : 12

   2.2 FHST Updates: 

                              Scheduled : 58
                             Successful : 58

   2.3 Operations Notes: 

       A HSTAR was written for a SSR Limit Violation (possible software =
reset) during an SAA event at 104/0804Z. It returned back into bounds at =
104/0805Z.  

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

       Continuation of normal science and SMOV operations.

/DMH