HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1968

PERIOD COVERED:  0000Z (UTC) 09/22/97 - 0000Z (UTC) 09/23/97

Daily Status Report as of 266/0000Z

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.  As detailed in HSTAR 6172, the acquisition for the first iteration
of this proposal defaulted at 265/005451Z to fine lock on FGS-3 only.
Otherwise, the observations executed as scheduled, and no further anomalies
were noted.

   1.2 Completed Three Sets of NIC/1/2/3 7412 (An HST/NICMOS Search for
Young Brown Dwarfs and Giant Planets)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations taken in parallel with the prime science observations to
be part of a survey to look for large planets and/or small brown dwarf
stars which are in orbit around the T-Tauri class stars RXJ16002-2,
RXJ15460-2 and RXJ15241-3.  At an age of 2 to 20 million years these
low-mass companions will be considerably brighter than more evolved brown
dwarfs or giant planets orbiting main-sequence stars, and hence will be
much easier to detect.  As detailed in HSTAR 6172, the acquisition for the
first iteration of this proposal defaulted at 265/005451Z to fine lock on
FGS-3 only.  Otherwise, the observations completed as planned, and no
further anomalies were noted.

   1.3 Completed Four 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 target were
listed as an unknown target.  The observations were completed , and no
problems were reported.

   1.4 Completed Five Sets of STIS/CCD 7620 (WF/PC-2 CYCLE 7 Standard Darks)

       The Space Telescope Imaging Spectrograph (CCD) was used to make a
dark calibration.  This 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.
Over an extended period these data will also provide a monitor of radiation
damage to the CCDs.  The observations were executed as scheduled, and no
anomalies were noted.

   1.5 Completed Ten Sets of NIC/1/2/3 7793 (NICMOS MULTIACCUM Dark
Characterization)

       The Near Infrared Camera and Multi-Object Spectrometer (NICMOS) was
used to obtain on-orbit darks for the SCAMRR and STEP 256-sample sequences
after the flight software change for the pedestal effect on day 233.  The
observations were completed as planned, and no anomalies were reported.

   1.6 Completed STIS/CCD 7659 (Daily Darks to Update Acquisition Bad Pixel
Table)

       The Space Telescope Imaging Spectrograph (CCD) was used to make dark
calibration images in order to update the acquisition bad 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.

   1.7 Completed STIS/CCD 7781 (STIS Non-Scripted Parallel Archive Proposal
- Full Orbit)

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

   1.8 Completed Two Sets of WF/PC-2 7786 (Pure Parallel Archive Survey -
Continuation)

       The WF/PC-2 was used to make observations as part of an archival
survey program in which the images were taken in parallel with the prime
science observations.  These WF/PC-2 parallel observations were obtained in
the ultraviolet in a search for interesting objects.  The observations were
completed as planned, and no problems were reported.

   1.9 Completed Three 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.

   1.10 Completed FGS 7486 (Fixing the Mass of the Bright Giant HD 173764)

       The Fine Guidance Sensors (TRANS Mode) were used to make astrometric
observations of the large, massive, giant, spectroscopic binary star
HD173764 (Class G4 II + B9  ) which has an estimated distance of about 150
PCS.  With its 832-day period, the binary will be observable over a large
range of orbital motion during the next year.  The observations were
executed as scheduled, and no anomalies were noted.

   1.11 Completed WF/PC-2 7427 (Saturn's Rings)

       The WF/PC-2 was used to make imaging observations of both the east
and west apsides of Saturn's rings.  Saturn's rings are a unique dynamical
laboratory and continue to present challenging problems which require
additional data to attack.  The observations were completed as planned, and
no problems were reported.

   1.12 Completed STIS/CCD/MA1/MA2 7091 (STIS Pixel-To-Pixel Response
Stability)

       The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to
make observations of standard star BD8D4211 in order to determine the
pixel-to-pixel response stability.  This is to illustrate that STIS has the
capability of achieving signal to noise ratio of 100:1 in both Band 1
{115-170 nm} and Band 2 {165-310 nm}.  The observations were completed as
scheduled, and no anomalies were noted.

   1.13 Completed Seven 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.

   1.14 Completed STIS/MA2 7644 (STIS NUV-MAMA Monitoring Flats)

       The Space Telescope Imaging Spectrograph (MA2) was used to obtain
near ultraviolet-MAMA flat-field observations for the construction of
bi-monthly delta-flats.  The observations were completed as planned, and no
problems were reported.

   1.15 Completed FOC/96 6529 (Direct Imaging of Betelgeuse)

       The Faint Object Camera (f/96) was used to make direct observations
of the M2 1ab class star HD39801 (aka, Betelgeuse in Orion).  These data
should yield one of the first direct images of the surface of a star other
than the Sun.  The observations were executed as scheduled, and no
anomalies were reported.

   1.16 Completed STIS/MA1 7728 (STIS FUV-MAMA Monitoring Flats)

       The Space Telescope Imaging Spectrograph (MA1) was used for the STIS
MAMA flat monitoring program.  This program will obtain
far-ultraviolet-MAMA flat-field observations for the construction of
delta-flats for select modes.  The observations were completed as planned,
and no anomalies were reported.

   1.17 Completed Two Sets of WF/PC-2 7625 (WF/PC-2 Cycle 7 Earth Flats)

       The WF/PC-2 was used to make a series of Earth flat calibration
images.  These flat fields will allow mapping of the OTA illumination
pattern and will be used in conjunction with previous internal and external
flats to generate new pipeline superflats.  The observations were completed
as planned, and no anomalies were reported.

   1.18 Completed Two 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.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 4
                                        Successful : 4
                          Scheduled Reacquisitions : 8
                                        Successful : 8

   2.2 FHST Updates:

                              Scheduled : 12
                             Successful : 10

       Updates scheduled at 266/0255Z failed.

   2.3 Operations Notes:

       There were no reported operational problems.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH