HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1552

PERIOD COVERED:  0000Z (UTC) 01/18/96 - 0000Z (UTC) 01/19/96

Daily Status Report as of 019/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed GHRS/2 5869 (Chromospheric Activity in Quiet stars: Halo =
Subdwarfs)

       The High Resolution Spectrograph (Side Two) was to be used to make =
spectrographic observations of the quiet star HD106516 to study its =
chromospheric activity.  This is a search for Mg II emission in low =
metallicity solar temperature field stars in the galactic halo.  The guide =
star acquisition for this proposal at 018/022648Z failed, an event =
recorded in HSTAR 5467.  No further problems were reported.

   1.2 Completed WF/PC-2 5972 (Determination of the Extragalactic Distance =
Scale)

       The WF/PC-2 was used to make observations of the galaxy NGC-2090 =
looking for standard candle Cepheid variable stars.  The purpose of these =
observations is to help estimate the Hubble constant with an accuracy of =
10%.  The observations were executed as scheduled, and no anomalies were =
noted.

   1.3 Completed WF/PC-2 6187 (WF/PC-2 Cycle 5 Calibration: Earth Flat)

       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.

   1.4 Completed WF/PC-2 6136 (Positioning and Proper Motion Measurement =
of PSR0656+14)

       The WF/PC-2 was used to make observations of radio pulsar =
STAR-06594 (aka, PSR0656+14) to search for an optical counterpart and to =
study its positioning and proper motion.  The results will be compared to =
existing ground based data.  The observations were executed as scheduled, =
and no anomalies were noted.

   1.5 Completed Two Sets of FOS/RD 6236 (FOS Cycle 5: Location of Spectra =
and Wavelength Calibration: Red Side Detector)

       The Faint Object Spectrograph (Red Side) was used to make =
calibration observations in order to determine the location of the spectra =
and to perform a wavelength calibration.  All observations were internal.  =
A Taled calibration was also completed.  The observations were completed =
as planned, and no anomalies were reported.

   1.6 Completed WF/PC-2 5949 (High Resolution Imaging of Galaxies =
Responsible for QSO Lyman Alpha Absorption.)

       The WF/PC-2 was used to make high resolution observations of =
Field-0405 in order to study galaxies which are responsible for =
intermediate redshift QSO Lyman Alpha absorption.  It is the extended =
gaseous region around these galaxies that produces the absorption.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.7 Completed WF/PC-2 5983 (Curcumstellar Disks in Young Nebulous =
Clusters)

       The WF/PC-2 was to be used to make observations of the young nearby =
nebulous cluster NGC-2024-2 looking for possible curcumstellar disks =
(Solar nebula analogs), like the type seen in the Orion Nebula.  At =
018/131800Z, the guide star acquisition for this proposal failed.  This =
occurrence was reported in HSTAR 5469.  No further problems were reported.

   1.8 Completed 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 an ultra-cool, nearby, =
M class dwarf star LHS2243 to determine the frequency for it being binary =
system and try to detect a stellar and sub-stellar companion.  The =
observations were executed as scheduled, and no anomalies were noted.

   1.9 Completed WF/PC-2 5505 (Deep Probes of Gravitational Lens Systems)

       The WF/PC-2 was used to make deep images of of the elliptical =
galaxy MG1654+134 which is a member of the Coma Cluster.  The intent is to =
improve our understanding of the stellar populations in ellipticals and to =
determine the distance to the Coma Cluster.  About 16 minutes after a =
normal guide star acquisition, there was an approximate one minute loss of =
lock at 018/181730Z.  This is documented in HSTAR 5470.  Otherwise, this =
12-hour observation was completed as planned, and no further problems were =
noted. 

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 6
                                        Successful : 5

       As documented in HSTAR 5469, there was a failure in the FGS =
acquisition at 018/131800.

       At 018/1730Z, there was an approximate one minute loss of lock =
after a nominal acquisition sequence.

                          Scheduled Reacquisitions : 8
                                        Successful : 8

   2.2 FHST Updates: 

                              Scheduled : 18
                             Successful : 18







   2.3 Operations Notes: 

       The battery #5 capacity test was begun at 018/1638Z.  Thus far, =
everything is proceeding niminally.

       On two occasions the command line from SAMS, the backup facility, =
was utilized.  The capability did not work on the first attempt, but =
performed flawlessly on the second attempt.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH