HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1998

PERIOD COVERED:  0000Z (UTC) 11/04/97 - 0000Z (UTC) 11/05/97

Daily Status Report as of 309/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Five 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.

   1.2 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.

   1.3 Completed STIS/CCD 7635 (STIS CCD Hot Pixel Annealing)

       The Space Telescope Imaging Spectrograph (CCD) was used to test the
hot pixel annealing procedure.  This process is assessed by measuring the
dark current behavior before and after annealing and by searching for any
window contamination effects.  The observations were completed as planned,
and no problems were reported.

   1.4 Completed FGS 7489 (Triton's Atmospheric Structure: Problems With
Present Models)

       The Fine Guidance Sensors were used to make photometric and
astrometric observations of the Moon Triton during an occultation of a
bright field star.  This to observe these events using the FGS both as a
high-speed photometer and in its normal role for occultation astrometry
before and after each event.  The observations were executed as scheduled,
and no anomalies were noted.

   1.5 Completed STIS/CC 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.

   1.6 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 its nominal wavelength setting {7751 A0}.  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.

   1.7 Completed WF/PC-2 6943 (WF/PC-2 Cycle 6: Throughput Verification for
Narrow Band Filters)

       The WF/PC-2 was used to make observations of object M4-16 in order
verify the throughput for the narrow band filters.  This program will
provide direct verification of throughput of narrow band filters through
observations of emission line objects.  The observations were completed as
planned, and no anomalies were reported.

   1.8 Completed 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.

   1.9 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 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.

   1.10 Completed STIS/CCD 7391 (NGC 2363 V1: A Rare Case of Major LBV
Eruption)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
images of NGC-2363 which contains a rare case of major luminous blue
variable (LBV) eruption.  Only a handful of major LBV eruptions have been
observed, including those of P Cygni in the 17^th century and Eta Carina
between 1840 and 1860.  As reported in yesterday's report and in HSTAR
6231, at 308/0811Z, the acquisition for this proposal defaulted to fine
lock on one FGS only.  Otherwise, the observations were executed as
scheduled, and no further anomalies were noted.

   1.11 Completed 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.  As reported in yesterday's report and in HSTAR 6231, at
308/0811Z, the acquisition for this proposal defaulted to fine lock on one
FGS only.  Otherwise, the observations were executed as scheduled, and no
further anomalies were noted.

   1.12 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.  As reported in
yesterday's report and in HSTAR 6231, at 308/0811Z, the acquisition for
this proposal defaulted to fine lock on one FGS only.  Otherwise, the
observations were executed as scheduled, and no further anomalies were
noted.

   1.13 Completed NIC/1/2 7321 (Spatially Resolved Multispectral
Investigation of Titan's Troposphere and Stratosphere)

       The WF/PC-2 was used to make observations of Saturn's moon Titan in
order to study its atmosphere.  This moon has a thick, hazy atmosphere
obscuring a surface that has only recently been observed in the
near-infrared.  Despite observations of surface albedo features, the nature
of the surface remains hidden due to our imprecise knowledge of the
atmosphere.  The observations were executed as scheduled, and no anomalies
were noted.

   1.14 Completed WF/PC-2 7384 (Probing the Fine-Scale Structure and Colors
of Interstellar "Cirrus" Clouds)

       The WF/PC-2 was used to make observations of the nebula NEB-220617
in order to probe the fine-scale structure and colors of interstellar
"cirrus" clouds.  The ubiquitous nature of galactic "cirrus" clouds make
them both: {1} accessible targets for the study of the properties of
interstellar dust grains, and {2} sources of confusion in investigations of
distant objects {e.g. galaxies, clusters of galaxies} at low surface
brightness levels.  The observations were completed as planned, and no
problems were reported.

   1.15 Completed Three 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.

   1.16 Completed WF/PC-2 6905 (WF/PC-2 Cycle 6 Calibration: Internal Monitor)

       The WF/PC-2 was used to make several internal calibrations
observations including biases and internal flats as part of a Cycle 6
calibrations procedure.  A variety of internal exposures are run weekly to
verify and monitor the health of the camera.  The observations were
executed as scheduled, and no anomalies were noted.

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

       The Space Telescope Imaging Spectrograph (CCD and MA1) was used to
make observations to study the morphological and spectral evolution of the
galaxy  3C332.  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.

   1.18 Completed NIC/1/2 7218 (Nearby Starburst Galaxies)

       The Near Infrared Camera (Cameras One and Two) was used to make
observations of the nearby starbursting galaxy NGC-3690.  This proposal
encompasses a study of both the stars and interstellar material in
starburst nuclei which will test ideas about the triggering of starbursts
and whether starbursts propagate outwards in a nucleus.  The observations
were completed as planned, and no anomalies were reported.

   1.19 Completed STIS/CCD 7636 (STIS Spectroscopic CCD Flatfielding)

       The Space Telescope Imaging Spectroscope (CCD) was used to make a
CCD flat field calibration observation in the spectrographic mode.  A bias
calibration was also taken.  The observations were completed as planned,
and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 6
                                        Successful : 6

                          Scheduled Reacquisitions : 9
                                        Successful : 9

   2.2 FHST Updates:

                              Scheduled : 16
                             Successful : 16

   2.3 Operations Notes:

       The STIS interrupt log was dumped at 308/1523Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH