HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1987

PERIOD COVERED:  0000Z (UTC) 10/20/97 - 0000Z (UTC) 10/21/97

Daily Status Report as of 294/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of WF/PC-2 7621 (WF/PC-2 Cycle 7 Supplemental
Darks PT1/3)

       The WF/PC-2 was used to make supplemental dark calibration images.
This set of calibrations is intended to obtain three dark frames every day
to provide data for monitoring and characterizing the evolution of hot
pixels.  The observations were executed as scheduled, and no anomalies were
noted.

   1.2 Completed STIS/CCD 7802 (Daily Darks to Update Acquisition Bad Pixel
Table)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
calibration observations to obtain daily darks to update the acquisition
bad pixel table.  These daily darks are intended to identify hot pixels for
update to the acquisition on-board FSW hot pixel table.  Daily hot pixel
lists can also be used for science data analysis.  The observations were
executed as scheduled, and no anomalies were noted.

   1.3 Completed Two Sets of NIC/2 7420 (A Near-Infrared Search for Very
Low Mass Companions to Stars Within 10 Parsecs of the Sun)

       The Near Infrared Camera (Camera Two) was used to make searching
observations for very low mass companions to variable stars HD10476 and
HD20794.  These stars are known to be within 10 parsecs of the Sun.  The
observations were executed as scheduled, and no anomalies were noted.

   1.4 Completed STIS/CCD 7711 (STIS CCD G750L fringing flats.)

       The Space Telescope Imaging Spectrograph (CCD) was used to
investigate and monitor the STIS CCD flat-field fringing in the G750L
grating at it's nominal wavelength setting {7751A}.  WAVECALs were also
taken at the same gain and wavelength setting (typical S/N = 100 for each
integration, and GAIN=4 on each).  The observations were executed as
scheduled, and no anomalies were noted.

   1.5 Completed Five Sets of WF/PC-2 7620 (WF/PC-2 Cycle 7 Standard Darks)

       The WF/PC-2 was used to make a series of Cycle 7 standard dark
calibration images.  This dark calibration program obtains dark frames
every week in order to provide data for the ongoing calibration of the CCD
dark current rate, and to monitor and characterize the evolution of hot
pixels.  The observations were executed as scheduled, and no anomalies were
noted.

   1.6 Completed Two Sets of STIS/CCD/MA1 7432 (Morphological and Spectral
Evolution of Galaxies)

       The Space Telescope Imaging Spectrograph (CCD and MA1) were used to
make observations to study the morphological and spectral evolution of the
galaxies  3C346 and 3C381.  A library of ultraviolet images of normal
galaxies at low redshifts is essential to our understanding of the
properties and evolution of the high redshift universe.  The observations
were completed as planned, and no problems were reported.

   1.7 Completed Two Sets of NIC/1/2/3 7729 (NICMOS Short One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two, and Three) was used to
obtain "JHK" imaging of sky regions while another instrument was prime.
These observations were  part of the short NICMOS one-orbit parallel
program.  The observations were executed as scheduled, and no anomalies
were noted.

   1.8 Completed Nine Sets of NIC/1/2/3 7789 (MULTIACCUM Dark
Characterization of Pedestal)

       The Near Infrared Camera (Cameras One, Two, and Three) was used to
take a series of dark images to characterize the pedestal problem fix which
was installed in NICMOS flight software version 4.08.  The observations
were completed as planned with no reported anomalies.

   1.9 Completed Four Sets of STIS/MA2 7604 (Cycle 7 MAMA Dark Measurements)

       The Space Telescope Imaging Spectrograph (MA2) was used to make MAMA
dark measurements.  These darks will be used in later image reductions and
also trended over the instrument's life time as an indicator of the
detector's degradation or damage.  The observations were completed as
scheduled, and no problems were reported.

   1.10 Completed NIC/1/2/3 7726 (NICMOS One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make a one orbit parallel calibration observations.  The observations were
executed as scheduled, and no anomalies were noted.

   1.11 Completed Three Sets of NIC/1/2 7443 (Mineralogic Mapping of
Asteroid 4 Vesta)

       The Near Infrared Camera (Cameras One and Two) was used to make
mineralogic mapping of asteroid 4 Vesta.  The 1997 opposition of asteroid 4
Vesta offers an important opportunity to map its diverse mineralogy with
uniquely high contrast and to investigate more thoroughly the newly
discovered major topographic feature at the south pole.  The observations
were completed as planned, and no anomalies were reported.

   1.12 Completed Two Sets of WF/PC-2/NIC/3 7382 (The Star-Formation
History of the Large Magellanic Cloud)

       The WF/PC-2 and the Near Infrared Camera (Camera Three) were used to
make observations of the disk of the Large Magellanic Cloud (LMC).  These
data will enable us to quantitativly study the intermediate to low-mass
stellar populations and the star-formation history of the LMC.  The
observations were executed as scheduled, and no anomalies were noted.

   1.13 Completed Two Sets of STIS/CCD 7782 (STIS Non-Scripted Parallel
Archive Proposal - Half Orbit)

       The Space Telescope Imaging Spectrograph (CCD) was used for a
non-scripted parallel archive proposal (one-half orbit).  The observations
were executed as scheduled, and no anomalies were noted.

   1.14 Completed Two Sets of STIS/CCD 7783 (STIS Parallel Science)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations taken in parallel with the prime science.  The observations
were completed, and no problems were reported.

   1.15 Completed WF/PC-2 6559 (An Imaging Study of Asteroids)

       The WF/PC-2 was used to make multi-color observations of the main
belt asteroid 11-Parthen.  This asteroid  reached perigee during Cycle 6.
The images will be searched for companions.  The observations were executed
as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 7
                                        Successful : 7

       One acquisition defaulted to fine lock on FGS-3 only at 294/0020335
when the scan steps limit was exceeded.  The following five reacquisitons
also resulted in single FGS guidance.  HSTAR 6307 was written.  The effect
on science proposals will be included in tomorrow's report.

                          Scheduled Reacquisitions : 6
                                        Successful : 6

   2.2 FHST Updates:

                              Scheduled : 14
                             Successful : 14

   2.3 Operations Notes:

       Contrary to yesterday's report, the STIS MAMA2 reset that occurred,
and was corrected, during the weekend had no effect on the STIS science
proposal 7783.  Each of the iterations of this proposal used the CCDs
rather than the MAMA2.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH