HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1750

PERIOD COVERED:  0000Z (UTC) 10/30/96 - 0000Z (UTC) 10/31/96

Daily Status Report as of 305/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed GHRS/2 6541 (Interstellar Cadmium: Probing Galactic =
Chemical Evolution)

       The High Resolution Spectrograph (Side Two) was used to make =
spectrographic observations of the O/B class star HD24398 in order to =
probe interstellar Cadmium and study the galactic chemical evolution.  As =
reported in yesterday's report and HSTAR 5769, two acquisitions and two =
reacquisitions scheduled during this proposal failed due to a large saved =
null bias error.  Twelve observations were affected.  No further problems =
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.  =
The acquisition and reacquisition problems mentioned in 1.1 also affected =
the two observations in the first iteration of this proposal.  Otherwise, =
he observations were completed as planned, and no further problems were =
reported.

   1.3 Completed FOS/RD 6916 (FOS/Cycle 6:Photometric Calibration)

       The Faint Object Spectrograph (Red Side) was used to make =
ultraviolet photometric calibration images of standard star BD+28D4211 =
using the 4.3 arcsecond aperture. The loss of lock described in HSTAR =
5768, mentioned in yesterday's report, caused an FOS timeout and no =
target acquisition occurred.  Later in the proposal, another loss of lock =
and another FOS timeout occurred.  These latter events were recorded in =
HSTARs 5771 and 5772.  No further problems were reported. 

   1.4 Completed WF/PC-2 7203 (Cosmology with the Medium Deep Survey - =
Short Orbit Cases)

       The WF/PC-2 was used to take short (about 20 minute) exposures, to =
be taken in parallel with the prime science observations, using the I =
filter.  These exposures are part of the medium-deep survey, which =
emphasizes exposures that will be useful in obtaining cosmological =
parameters.  The observations were completed as planned, and no problems =
were reported.

   1.5 Completed GHRS/1 6446 (The High Chromospheres of the late A Stars, =
Altar and Alpha Cephei)

       The High Resolution Spectrograph (Side One) was used to make the =
observations of the Si IV lines in the high chromosphere of the late, A =
class, star HD203280.  These data will be used to construct a model of =
the chromosphere structure of this star.  The observations were completed =
as scheduled, and no anomalies were reported. 

              At this point, the safemode event described 
              in 2.3 occurred, and the following scheduled 
              proposals did not execute:

1.  FOS/RD 6577 (An Expanded Survey for Study of the Lyman-
    Alpha Line and QSO Mg II Absorption)
2.  Two Sets of WF/PC-2 6253 (Pure Parallel Archive Program)
3.  Two Sets of WF/PC-2 6909 (WF/PC-2 Cycle 6 Calibration: 
    Earth Flats)
4.  WF/PC-2 6344 (Low - Mass Binaries in the Hyades - 
    Completing the Survey)
5.  FOS/BL 6470 (Decoding the Inner Dsik About Beta-Pictoris)
6.  COSTAR/U 6895 (FOC Cycle 6 PSF Monitoring)

2.1 Guide Star Acquisitions: 

                            Scheduled Acquisitions : 1
                                        Successful : 1

                          Scheduled Reacquisitions : 1
                                        Successful : 1

   2.2 FHST Updates: 

                              Scheduled : 2
                             Successful : 2

   2.3 Operations Notes: 

       On Wednesday, October 30, 1996, HST entered +V3 Software Sunpoint =
Safemode at 304/181014Z.  Safemode test 'First RWA Momentum Limit' on RWA =
1 failed. initiating the safemode event.  AN format telemetry data was =
restored at 304/181620Z.  All spacecraft subsystems are healthy and =
communications are nominal.  Analysis of data is continuing in =
preparation for an update briefing to HST Project Management to be held =
today at 10:00 a.m. in Building 3, Room S166 when recovery procedures =
will be discussed and finalized.

       Currently a Health and Safety Load is being prepared for uplink =
later today.  Others may follow.  Normal science operations will resume =
as determined by this morning's briefing.

3.0 SIGNIFICANT FORTHCOMING EVENTS: 

        Nothing at this time.

/DMH