HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1660

PERIOD COVERED:  0000Z (UTC) 06/20/96 - 0000Z (UTC) 06/21/96

Daily Status Report as of 173/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three 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.

   1.2 Completed Two Sets of 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. =
During the second set of observations there was a guide star acquisition =
failure at 172/1736Z which defaulted to a single star guiding on FGS #1. =
One WF/PC-2 observation was impacted. There were no losses of lock. The =
observations were completed as planned, and no problems were reported.

During the second set of observations there was a guide star acquisition =
failure at 172/1736Z which defaulted to a single guides star guiding on =
FGS #1. One WF/PC-2 observation was impacted. There were no losses of =
lock.

   1.3 Completed FGS 6049 (Monitoring the Size and Shape of Mira Type =
Stars)

       The FGSs were used to make astrometric observations of the Mira =
class star HD84748 in order to study its size and shape during different =
phases of its pulsation cycle. The observations were completed as =
planned, and no anomalies were reported.

   1.4 Completed FOS/BL 6750 (Spectropolarimetry of Ultraviolet Continuum =
and Line Emissions in Binary Systems)

       The Faint Object Spectrograph (Blue side) was used to make =
ultraviolet continuum and emission line spectropolaragraphic observations =
of the eclipsing binary star system V356-Sgr. The observations were taken =
during the primary eclipse. The observations were executed as scheduled =
and no anomalies were noted.

   1.5 Completed WF/PC-2 5957 (Snapshot of 3CR Radio Galaxies)

       The WF/PC-2 was used to make observations for radio galaxy 3C323.1 =
to study the morphology of the radio galaxy. The observations were =
executed as scheduled, and no anomalies were noted.

   1.6 Completed WF/PC-2 6235 (High Resolution Imaging of Radio Galaxies =
at Redshift Z~1.0)

       The WF/PC-2 was used to make observations of faint radio galaxy =
3C277.2 which is known to have a redshift of about one. This is to =
attempt to determine the cause of the alignment of the blue-excess along =
the radio axis. The observations were executed as scheduled, and no =
anomalies were noted.

   1.7 Completed FOS/RD/BL 6017 (Soft X-Ray Transients, Outburst in Black =
Hole Accretion Disks)

       The Faint Object Spectrograph (Both the Blue and Red Sides) were =
used to make target of opportunity observations of the cataclysmic =
contact-binary star J1655-40 which is known to show soft X-ray =
transients. These outburst are believed to be caused by the accretion =
disk surrounding a black hole. The observations were completed as =
scheduled, and no problems were reported. 

   1.8 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.

   1.9 Completed FGS 6036 (Detection and Mass Determination of Low Mass =
Companions to nearby M Dwarf)

       The FGSs were used in both the POS and TRANS Modes to make =
astrometric observations of low mass companions to M class dwarf star =
GL791 and four reference stars. This will lead to a mass determination =
for the stars. There was a guide star acquisition failure at 172/1736Z =
which defaulted to a single star guiding on FGS #1. One FGS astrometric =
observation was impacted. There were no losses of lock. The observations =
were completed as planned, and no anomalies were noted.

   1.10 Completed WF/PC-2/ GHRS/1/ FOS/BL 6567 (Wind of Massive Stars in =
Nearby Galaxies)

       The WF/PC-2 , the High Resolution Spectrograph (Side One) and the =
Faint Object Spectrograph (Blues Side) were all used to make observations =
of hot stars in the local-group, irregular galaxy NGC-6822. Detailed =
studies of the hot stellar populations in galaxies outside the Milky Way =
provide very important tests of the theories of stellar winds and star =
formation and evolution. The observations were executed as scheduled and =
no anomalies were noted. 

   1.11 Completed WF/PC-2 5913 (Low-Mass Binaries and Luminosity Fuction)

       The WF/PC-2 was used to make observations of the low-mass binary =
system MT0005 (Late Type Class M dwarf stars). The intent is to determine =
why the local stellar luminosity function is flat below Mv=3D12, while =
that found from more distant stars falls by an order of magnitude by =
Mv=3D14. The observations were executed as scheduled, and no anomalies =
were noted.

   1.12 Completed WF/PC-2 6439 (Using Cepheid Based Distance to Test =
Large Peculiar Motions)

       The WF/PC-2 was used to make observations of the spiral galaxy  =
NGC-4603 which is located in the Centaurus galaxy cluster to look for =
Cepheid variable stars to be used to measure the distance to the object, =
which in turn will be used to study its large peculiar motions. If this =
galaxy is a cluster member, as appears from secondary distance =
indicators, then its peculiar velocity is inconsistent with that =
predicted from the density field as reconstructed from the observational =
distribution of galaxies in the cluster. The observations were executed =
as scheduled, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 8
                                        Successful : 8

                          Scheduled Reacquisitions : 7
                                        Successful : 7

   2.2 FHST Updates: 

                              Scheduled : 16
                             Successful : 16

   2.3 Operations Notes: 

       There was a guide star acquisition failure at 172/1736Z which =
defaulted to a single star guiding on FGS #1. One WF/PC-2 and on FGS =
astrometric observations were impacted. There were no losses of lock. =
(See Operational Notes 1.2 and 1.9)

       No other operational anomalies were noted.  

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH