HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1640

PERIOD COVERED:  0000Z (UTC) 05/22/96 - 0000Z (UTC) 05/23/96

Daily Status Report as of 144/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 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 concurrently 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.

   1.2 Completed GHRS/1/2 6413 (High Velocity Thermal Shock Instabilities =
in the Vela Supernova Remnant)

       The High Resolution Spectrograph (Both Sides One and Two) was used =
to make high resolution and high signal-to-noise ratio observations of =
the star HD72997.  Ultraviolet light from this star passes through the =
Vela supernova remnant and the absorption lines can be used to study high =
velocity thermal shock instabilities in the nebula.  The observations =
were completed as planned, and no anomalies were noted.

   1.3 Completed Three Sets of FOS/BL 6166 (FOS Cycle 5: Location of =
Spectra and Wavelength Calibration)

       The Faint Object Spectrograph (Blue Side) was used to make =
wavelength calibration images to measure the stability of the FOS Blue =
Side wavelength scale and spectral locations.  A Taled calibration =
observations was also taken.  The observations were completed as planned, =
and no anomalies were reported.

   1.4 Completed WF/PC-2 5925 (The Polarization and Emission Line =
Morphology of Protogalaxy Candidates)

       The WF/PC-2 was used to make observations of the protogalaxy =
candidate/radio source 3C256 in order to study its polarization and =
emission line morphology.  The extremely blue color of this object may be =
caused by star formation, or by scattering of non-stellar continuum light =
from the nucleus.  The observations were completed as scheduled, and no =
anomalies were noted 

   1.5 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.

   1.6 Completed GHRS/2 6534 (Be-Deficient Halo Stars: Implications For =
Galactic Chemical Evolution)

       The High Resolution Spectrograph (Side Two) was used to make =
observations of the beryllium deficient halo star HD94028 to help study =
the galactic chemical evolution.  The objective is to measure the =
abundance of boron in this star, and compare this with the abundances of =
Be and Li.  The observations were completed as planned, and no problems =
were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 3
                                        Successful : 3

                          Scheduled Reacquisitions : 14
                                        Successful : 14

   2.2 FHST Updates: 

                              Scheduled : 4
                             Successful : 4

   2.3 Operations Notes: 

       HST operations transferred to the SAMS back-up facility for the =
period 143/1600Z to 144/0000Z so that LAN re-configuration activities =
could proceed in the MOR area.  No problems were encountered.

       There were no poly errors in the one science tape recorder dump =
performed today.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH