HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1972

PERIOD COVERED:  0000Z (UTC) 09/26/97 - 0000Z (UTC) 09/29/97

Daily Status Report as of 272/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three Sets of 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.

   1.2 Completed WF/PC-2 6967 (Blue Continuum Snapshots of 3CR Radio -
Continued Galaxies)

       The WF/PC-2 was used to make observations of the radio galaxy
3C162.0.  Radio galaxies are an important class of extragalactic objects:
they represent one of the most energetic astrophysical phenomena; they may
be used as probes of their environments; and they are unique probes of the
early Universe.  The observations were completed as planned, and no
problems were reported.

   1.3 Completed Eight 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.

   1.4 Completed NIC/2 7693 (NICMOS Pupil Transfer Function)

       The Near Infrared Camera (Camera Two) was used to make observations
of P330E-CAL in order to perform pupil transfer function observations.  The
output of this program will be a two-dimensional surface fit that will give
the large scale corrections needed to flat-field the images to an accuracy
of about 2%.  Also, changes in the PSF will be measured as a function of
position within the cameras.  The observations were executed as scheduled,
and no anomalies were noted.

   1.5 Completed Eleven 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.

   1.6 Completed STIS/CCD/MA1/MA2 7582 (Spatial Distribution of Io's
Extended UV Emissions)

       The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to
take measurements of the spatial distribution of Io's sulfur and oxygen UV
emissions.  The proposal completed as planned, and no problems were
reported.

   1.7 Completed WF/PC-2 6431 (Determination of the Extragalactric Distance
Scale)

       The WF/PC-2 was used to make observations of the galaxy NGC-1425 to
be used in measuring the periods of Cepheid variable stars within this
galaxy.  This will allow for a more accurate estimate of the distances to
these galaxies through the period-luminosity relation for the Cepheid
stars.  The observations were executed as scheduled, and no anomalies were
noted.

   1.8 Completed Eight Sets of NIC/1/2/3 7726 (NICMOS One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make one orbit parallel calibration observations.  Four iterations of this
proposal were not executed due to a NICMOS suspend.  See 2.3 for details.
Otherwise, the observations were executed as scheduled, and no anomalies
were noted.

   1.9 Completed Three Sets of 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.

   1.10 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.

   1.11 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.

   1.12 Completed WF/PC-2 6864 (Circumstellar Material Around Symbiotic Stars)

       The WF/PC-2 was used to observe two bright nearby symbiotics - RX
Pup and Mira.  Observations are made in emission lines H Beta, NII SII and
a continuum F547w to look for dust reflection.  Higher signal to noise
images where better PSF information is available are also taken in F675W,
which includes several strong nebular emission lines.  RX-PUP is known to
have extended jet like emission features, which will be seen with these
exposures. Mira is observed near minimum light to give the best chance of
detecting extended emission.  The observations completed as scheduled with
no problems.

   1.13 Completed NIC/1/2 7264 (High Redshift Reflection Nebulae)

       The Near Infrared Camera (Cameras One and Two) was used to examine
the spatially extended K band light from high redshift radio galaxies that
cannot be dominated by stars.  These objects are giant reflection nebulae
rather than "galaxies".  The observations will allow us to {I} characterize
the morphology of the reflection nebulae and the associated polarization
field {ii} infer the distribution of the dust (e.g wind vs. dust halo) and
some of the properties of the dust, {iii} place constraints on the
underlying stellar population of the host object and {iv} investigate the
ramifications of these objects for galaxy formation and evolution.  The
observation completed normally with no reported problems.

   1.14 Completed Two Sets of WF/PC-2 6802 (Cosmology With the Medium Deep
Survey)

       The WF/PC-2 was used to make observations taken in parallel with the
prime science observations as part of the Medium Deep Sky Survey.  The
observations were executed as scheduled, and no problems were reported.

   1.15 Completed Four Sets of 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.

   1.16 Completed NIC/1/2/3 7327 (Elliptical Galaxy Evolution at High
Redshift: IR Imaging of 60 Distant Clusters)

       The Near Infrared Camera (Cameras One, Two, and Three) was used to
make infrared observations high redshifted elliptical galaxies in galactic
cluster CL1125+475.  By measuring the structural properties of high
redshift cluster elliptical galaxies, it is hoped to resolve the
controversy regarding the age and formation history of bright cluster
ellipticals.  The observations were executed as scheduled, and no anomalies
were noted.

   1.17 Completed STIS/MA1 7434 (The Supernova Intensive Study)

       The Space Telescope Imaging Spectrograph (MA1) was used to continue
the long-term project on supernovae by observing SN1987A.  HST can make
unique contributions to understanding supernovae, as has been demonstrated
through this program in past years, and now STIS and NICMOS offer new
opportunities for deepening this investigation.  The aim of the proposal is
to explore the UV emission from supernovae, exploit the spatial resolution
of HST and press the late-time observations of supernovae into uncharted
territory.  The observations were completed as planned, and no anomalies
were reported.

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

       The Near Infrared Camera (Cameras One, Two, and Three) was to be
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.  During the first iteration of this proposal, the NICMOS
suspend detailed in 2.3 occurred.  The following two iterations occurred
during the period of the suspend and, therefore, were not executed.

   1.19 Completed Four Sets of WF/PC-2 7202 (The WF/PC-2 B Band Parallel
Survey: A Systematic and Synoptic Study of Galaxy Formation and Evolution -
Short Orbit Case)

       The WF/PC-2 was used to make observations as part of a B-Band Survey
to make synoptic study of galaxy formation and evolution.  These
observations were taken in parallel with the prime science observations.
They were completed as planned, and no anomalies were reported.

   1.20 Completed FGS 6879 (Parallax of TV-Col)

       The FGSs were used to make astrometric observations of the x-ray
variable star TV-Col to obtain its precise parallax measurements.  The
observations were executed as scheduled, and no anomalies were noted.

   1.21 Completed WF/PC-2 6855 (The Disks Around Young Stellar Objects)

       The WF/PC-2 was used to make observations of the disk surrounding
the young stellar object GG-Tau.  Circumstellar material has been detected
at 1.3 mm around about 50% of the young (T<10^6 yr) stellar objects in the
Taurus-Auriga molecular cloud.  The observations permit an estimate of the
material's spatial extent, mass and temperature.  The observations were
executed as scheduled, and no anomalies were noted.

   1.22 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 observations
were completed, and no problems were reported.

   1.23 Completed NIC/2 7228 (Imaging and Polarimetry of YSO'S)

       The Near Infrared Camera (Camera Two) was to be used to investigate
the young stellar object (YSO) HH7-11-1 with coronagraphic imaging,
polarimetry, and line imaging.  This proposal was not executed since it was
scheduled to occur during the time of the NICMOS suspend.

   1.24 Completed NIC/2 7413 (The Dusty Environments of Protostars)

       The Near infrared Camera (Camera Two) was to be used to make
observational images of the dusty environment around protostar IRAS04181.
These observations will address physical conditions in protostellar
envelopes and provide deeper insight into star and protoplanetary disk
formation. This proposal was not executed since it was scheduled to occur
during the time of the NICMOS suspend.

   1.25 Completed NIC/2 7330 (The Fueling of Active Nucleii: A NICMOS
Snapshot Survey)

       The Near Infrared Camera (Camera Two) was used to probe the dark
matter distribution of M31 far from the center by observing intervening
absorption from the MgII doublet (lambda 2800) in the spectrum of one
background QSO located in a geometrically optimal position.  HST
observations are required because this feature is in a wavelength range not
accessible from the ground, and the QSO magnitudes and expected strength of
absorption make IUE observations unfeasible.  The proposal completed as
expected with no anomalies.

   1.26 Completed WF/PC-2 7497 (WF/PC-2 Observations of Astrophysically
Important Visual Binaries)

       The WF/PC-2 was used to make observations of the visual binary
variable sat system G107-70.  This system is a famous metal-deficient
G-dwarf for which accurate masses will lead to the star's helium content
with cosmological implications.  The observations were completed as
planned, and no anomalies were reported.

   1.27 Completed NIC/2 7498 (NICMOS Imaging Survey of Distant Radio
Galaxies. Ellipticals at Z > 2 ?)

       The Near Infrared Camera (Camera Two) was used to make high
resolution and high signal-to-noise ratio imaging survey observations of
the radio galaxy MRC0156-25.  The existence and photometric properties of
massive elliptical galaxies at high redshift provide a powerful probe of
galaxy evolution.  The observations were executed as scheduled, and no
anomalies were noted.

   1.28 Completed NIC/1 7692 (Polarizers Calibration)

       The Near Infrared Camera (Cameras One) was used to make observations
of the standard star HDE283812 as part of a polarization calibration.  The
polarization and position angle of polarization are measured for two
standard polarized point sources and one extended polarized sources of
known J and H band polarization.  The observations were completed as
scheduled, and no problems were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 19
                                        Successful : 19

                          Scheduled Reacquisitions : 27
                                        Successful : 27

   2.2 FHST Updates:

                              Scheduled : 43
                             Successful : 43

   2.3 Operations Notes:

       NICMOS was autonomously placed into the suspend mode at
approximately 270/1106Z (Saturday, September 27th ) when an unexpected
error occurred.  Indications were that the NICMOS control section was shut
down by the exception handler due to an unexpected INTEL debug exception.
Operations, flight software, and  ST ScI personnel were able to determine
the cause and completed NICMOS recovery at 271/0418Z (early Sunday
morning).  The recovery was successful, and allowed the remainder of
scheduled NICMOS observations to be completed in the SMS.  Further
investigation of the problem will be done this week.

       A total of nine NICMOS proposals were affected.  See sections  1.8,
1.18, 1.23, and 1.24 for details of the effects of the suspend on NICMOS
operations.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH