HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1833

PERIOD COVERED:  0000Z (UTC) 03/12/97 - 0000Z (UTC) 03/13/97

Daily Status Report as of 072/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of WF/PC-2 6363 (The Environments and Host =
Galaxies of BL-Lac Objects)
363

       The WF/PC-2 was used to make snapshot survey observations of =
BL-Lac object 1ES1239+45 in order to study its environment and its host =
galaxy.  The goal is to investigate systematic trends in host galaxy =
type, unusual morphological features, nearby companion galaxies, etc.  =
The observations were executed as scheduled, and no anomalies were noted.

   1.2 Completed Four Sets of NIC/1 7041 (NICMOS Coarse Optical =
Alignment)

       The Near Iinfrared Camera/1 was used to make observations of the =
cluster NGC-3603 in order to complete coarse optical alignment of the =
system.  The purpose of this activity is to perform a series of iterative =
adjustments of the NICMOS pupil alignment mechanism to establish the =
initial optical alignment in focus and tilt for its cameras.  The =
observations were completed as planned, and no anomalies were reported. 

   1.3 Completed STIS/CCD 7099 (CCD Flat-Field Stability and Cosmetic =
Defect Fraction)

       These observations were used to verify cosmetic defect fraction on =
the CCD using flat-field images, and to  investigate flat-field stability =
over short (minutes) and
long (days) time intervals.  The observations were executed as scheduled, =
and no anomalies were noted.

   1.4 Completed WF/PC-2 7019 (WF/PC-2 SMOV Flat Field Check)

       The WF/PC-2 was used to obtain a sequence of Earth streak and =
internal flats to check for changes at the 1% level.  The observations =
were completed as scheduled, and no problems were reported 

   1.5 Completed WF/PC-2 6887 (A Photometric Search for Faint Companions =
to Nearby Stars)

       The WF/PC-2 was used to make photometric search observations of =
the nearby star HD61421A in order to look for possible companions.  The =
technique involves use of the Planetary Camera with wide band pass =
filters to photometrically measure for the presence of resolved dark =
companions.  The observations were executed as scheduled, and no =
anomalies were noted. 

   1.6 Completed FGS 6882 (Companion to GL6230)

       The FGSs were used to make POS and TRANS mode astrometric =
observations of star GL623 (aka, Gleise 623) looking for possible =
companions.  Five other reference stars were also used.  From these data =
the precise parallax, barycentic orbits, and accurate masses of the star =
and its companion will be determined.  The observations were completed as =
schedule, and no anomalies were reported.

   1.7 Completed 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 galaxy NGC-5985in order to study its central bulge.  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.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 10
                                        Successful : 10

                          Scheduled Reacquisitions : 3
                                        Successful : 3

   2.2 FHST Updates: 

                              Scheduled : 19
                             Successful : 19

   2.3 Operations Notes: 

       There were no significant operational problems.

       NICMOS was commanded from operate to boot at 071/2050Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

       Continuation of SMOV activities.

/DMH