HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2018

PERIOD COVERED:  0000Z (UTC) 12/05/97 - 0000Z (UTC) 12/08/97

Daily Status Report as of 342/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Seven 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 Four 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.

   1.3 Completed Four Sets of STIS/CCD 7601 (CCD Dark and Bias Monitor)

       The Space Telescope Imaging Spectrograph (CCD) was used to conduct
bias and dark monitoring.  Also, observations were made to track the growth
of hot pixels on the CCD in general and within the various target
acquisition apertures specifically.  The observations were completed as
planned, and no anomalies were reported.

   1.4 Completed Three Sets of 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.

   1.5 Completed WF/PC-2/STIS/CCD/NIC/1/2 7307 (The Formation and Evolution
of Rich Star Clusters in the LMC)

       The WF/PC-2, the Space Telescope Imaging Spectrograph (CCD), and the
Near Infrared Camera (Cameras One and Two) were used to make observations
of the rich star cluster NGC-1818 which is located within the Large
Magellanic Cloud in order to study its formation and evolution.  These
observations will help us understand the origin and evolution of rich star
clusters in our own Galaxy.  The observations were complete as scheduled,
and no anomalies were reported.

   1.6 Completed STIS/CCD 7600 (STIS CCD Performance Monitor)

       The Space Telescope Imaging Telescope (CCD) was used to measure the
baseline performance and commandability of the CCD subsystem.  Only primary
amplifier D is used.  Bias, dark, and flat field exposures are taken in
order to measure read noise, dark current, CTE, and gain.  Numerous bias
frames are also taken to permit construction of "superbias" frames in which
the effects of read noise have been rendered negligible.  Dark exposures
are made outside the SAA.  The observations completed normally, and no
anomalies were reported.

   1.7 Completed 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 star BD-15D6290.
This star is known to be within 10 parsecs of the Sun.  The observations
were executed as scheduled, and no anomalies were noted.

   1.8 Completed STIS/MA1 6854 (Saturn's Aurora and Airglow)

       The Space Telescope Imaging Spectrograph (MA1) was used to make
ultraviolet images of the planet Saturn's aurora and air glow regions.
Saturn's auroral energy is radiated from the morning sector in both polar
regions, peaking near dawn, and intensities are variable on 10-minute time
scales. This suggests that magnetosphere-solar wind interactions play a
dominant role in powering the auroral emissions.  The observations were
completed as planned, and  no anomalies were reported.

   1.9 Completed WF/PC-2 7387 (T-Tauri Star Snapshot Survey)

       The WF/PC-2 was to be used to make observations of the star SZ-19 as
part of a T-Tauri class star survey.  As described in the previous report
and in HSTAR 6263, the guide star acquisition for this proposal failed.
The take data flag remained down.

   1.10 Completed NIC/1/2/3 7417 (NICMOS and WF/PC-2 Imaging of a New
Beta-Pic-like Circumstellar Dust Disk)

        The Near Infrared Camera (Camera One, Two and Three) was used to
make observations of the Beta-Pic-like curcumstellar dust disk Mon-R2.  The
sub-arcsecond resolution of its structure will show if the disk is
perturbed by embedded objects and/or if a central hole is cleared by tidal
interaction of the binary star on the disk.  The observations were executed
as scheduled, and no anomalies were noted.

   1.11 Completed Eight 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.  During the seventh
iteration of this proposal, the fine lock backup event described in 2.1
occurred and may have affected eight observations.  Otherwise, the
observations were completed as planned, and no further problems were
reported.

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

       The Near Infrared Camera (Camera Two) was used to investigate the
young stellar object DG-Tau with coronagraphic imaging, polarimetry, and
line imaging.  A dark calibration image was also taken.  The observations
were completed as planned, and no problems were reported.

   1.13 Completed NIC/2 7219 (Ultraluminous Infrared Galaxies)

       The near Infrared Camera (Camera Two) was used to make observations
of the ultraluminous infrared galaxy 13451+1232.  The luminous IRAS
Galaxies are probably powered by nuclear starbursts and/or central AGNs:
many of these systems exhibit evidence of recent galactic interaction or
merging.  A dark calibration image was also taken.  The observations were
completed as planned, and no problems were reported.

   1.14 Completed STIS/CCD/MA2 7723 (STIS Grating Scatter)

       The Space Telescope Imaging Spectrograph (CCD and MA1) was used to
make observations of object P330E in order to study grating scatter.  The
observations will be used to measure the scattering and the far-wings of
the LSF vs. wavelength by observing red stars at blue wavelengths.  A wave
length calibration observation was also taken.  The observations were
executed as scheduled, and no anomalies were noted.

   1.15 Completed Ten Sets of NIC/2/3 7811 (NICMOS Modified One Orbit Parallel)

       The Near Infrared Camera (Cameras Two and Three) was used to obtain
"JH" imaging, and G096 and G141 spectroscopy of sky regions when another
instrument is prime.  A wavelength calibration image was also taken.  The
observations were completed as planned, and no anomalies were reported.

   1.16 Completed Four 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.

   1.17 Completed Six Sets of NIC/2/3 7812 (NICMOS Modified Short One Orbit
Parallel)

       The Near Infrared Camera (Cameras Two and Three) was used to obtain
"JH" imaging of sky regions when another instrument is prime.  Two dither
positions are obtained for each filter.  The observations were completed as
scheduled, and no anomalies were reported.

   1.18 Completed STIS/CCD/MA2 7512 (STIS Observations of Beta Pictoris)

       The Space Telescope Imaging Spectrograph (CCD and MA2) was used to
make observations of the star Beta Pictoris.  Since the discovery of its
circumstellar disk of dust and gas 10 years ago, this star has been a
unique laboratory for the study of extrasolar planetary systems.  A
wavelength calibration image was also taken.  The observations were
completed as planned, and no problems were reported.

   1.19 Completed NIC/1/2/3 7268 (Nuclear Brightness Profiles of Merger
Remnants; Do Mergers Form Ellipticals?)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the elliptical galaxy NGC-7727.  Many elliptical
galaxies might have formed from mergers of disk galaxies.  Numerical
simulations yield elliptical-like remnants and observed merger remnants
have R^1/4 surface brightness profiles.  However, while the global
properties of merger remnants and ellipticals are similar, it is unknown
whether this is true for their nuclear properties as well.  The
observations were executed as scheduled, and no anomalies were noted.

   1.20 Completed WF/PC-2 6619 (High Resolution Images of QSO Lyman-Alpha
Absorbing Galaxies)

       The WF/PC-2 was used to make several images of galaxy field (Field
2253) in order to obtain high resolution observations of the Lyman-Alpha
absorbing galaxies within this field-of-view.  The purpose is to directly
identify the objects responsible for low and intermediate redshift in QSO
Lyman-Alpha systems.  The observations were executed as scheduled, and no
anomalies were noted.

   1.21 Completed Eight 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.

   1.22 Completed WF/PC-2 6887 (A Photometric Search for Faint Companions
to Nearby Stars)

       The WF/PC-2 was used to make a photometric search observations of
the nearby star HD16160 in order to look for possible companions.  The
technique involves use of the Planetary Camera with wide band pass filters
to photometrically measure for the presence of resolved dark companions.
The observations were executed as scheduled, and no anomalies were noted.

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

       The WF/PC-2 was used to make observations of the galaxy NGC-3319 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.

   1.24 Completed NIC/1 7451 (Gravitational Lensing by Damped Ly-Alpha
Absorbers)

       The Near Infrared Camera (Camera One) was used to make observations
of object 3C196 in order to study gravitational lensing in damped
Lyman-Alpha absorbers.  Damped Lyman-Alphas are thought to arise in the
disk of the progenitors of present-day spiral galaxies.  The observations
were completed as scheduled, and no problems were reported.

   1.25 Completed NIC/1/2/3 7421 (The Relation Between Quasar Luminosity
and Host Galaxy Mass)

       The Near Infrared Camera (Cameras One, Two, and Three) was used to
obtain ground-based, near-infrared imaging of the nearby quasar PG1322+659
which has indicated a relation between the luminosity of the nucleus and
the luminous mass of its host galaxy.  During the execution of this
proposal, the fine lock default mentioned in 2.1 occurred, possibly
affecting two observations.  Ohterwise, the proposal completed as planned,
with no further reported problems.

   1.26 Completed WF/PC-2 6581 (Morphology and Photometry of Galaxies in
Optically Selected High Redshift Clusters)

       The WF/PC-2 was used to make observations of the galactic cluster
Gal-Clus-2 in order to make photometric observations and to study its
morphology.  The high angular resolution imagery of HST, combined with our
extensive ground based u, v, B, g, V, R, I and z photometry and
spectroscopy, will allow the measurement of the morphological fractions in
distant clusters as functions of redshift, color, spectral features, galaxy
density, and global cluster properties such as core radius and ellipticity.
The observations were executed as scheduled, and no anomalies were
reported.

   1.27 Completed Three 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.

   1.28 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.

   1.29 Completed STIS/CCD 7483 (The Nature of T Tau S)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
spectrographic observations of the IR luminous component of the variable
binary star T-Tau S.  This is to establish the nature of the obscured star,
to probe the aftermath of its flare, and to estimate the extinction and the
wavelength dependence of the dust in the circumstellar disk.  A wavelength
calibration observation was also taken.  The observations were completed as
scheduled, and no anomalies were reported.

   1.30 Completed Two Sets of NIC /1/2/3 7607 (NICMOS Photometric
Monitoring Test)

       The Near Infrared Camera (Cameras One and Two) was used to conduct a
photometric monitoring test by making observations of standard stars
P177D-Cal and P330E-Cal.  The standard stars (one solar analog and one
white dwarf) were observed with NIC1 & NIC2 at six different wavelengths
spanning the NICMOS wavelength range.  The observations were completed as
planned, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 19
                                        Successful : 19

       As documented iN HSTAR 6264, the acquisition at 340/183538Z
defaulted to fine lock backup on FGS-2 only when the scan steps limit was
exceeded.  The proposal described in 1.11 and in 1.25 may have been
affected.

                          Scheduled Reacquisitions : 23
                                        Successful : 23

   2.2 FHST Updates:

                              Scheduled : 44
                             Successful : 44

   2.3 Operations Notes:

       The eleven FGS/FGS alignment table loads for the FGS calibration
sequence were uplinked at 342/0130Z.  A successful guide star acquisition
occurred at 342/0315Z.  Subsequently, SSR dumps were received at 342/0452Z,
at 342/0645Z, and at 342/1042Z; realtime science data was received at
342/0615Z; and FGS-1 astrometry data was received at 342/0630Z, at
342/0737Z, and at 342/0748Z.  All will be examined to verify the positive
influence of the calibration exercise.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH