HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2233

PERIOD COVERED:  0000Z (UTC) 10/20/98 - 0000Z (UTC) 10/21/98

Daily Status Report as of 294/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of NIC/2 7233 (Dust Disks Around Main Sequence Stars)

       The Near Infrared Camera (Camera Two) was used to make observations
of the dust disk around main sequence stars.  The observations were made
with the coronagraph to minimize the effects of glare from the bright
central star.  A dark calibration image was also taken.  The observations
were completed as scheduled, and no anomalies were reported.

   1.2 Completed Three Sets of WF/PC-2 7713 (WF/P-2 Cycle 7 Supplemental
Darks pt3/3)

       The WF/PC-2 was used to make supplemental dark calibration images.
This dark calibration program obtains three dark frames every day to
provide data for monitoring and characterizing the evolution of hot pixels.
The observations were completed as planned, and no anomalies were noted.

   1.3 Completed Two Sets of STIS/CCD 7948 (CCD Dark and Bias Monitor --
Cont. to Dec. 98)

       The Space Telescope Imaging Spectrograph (CCD) was used to measure
CCD dark current and bias rates for the two supported amplifier settings
{GAIN=1 and GAIN=4} in order to gather data for making superdarks and
superbiases.  The data will be used to track the growth of hot pixels on
the CCD in general and within the various target acquisition apertures
specifically.  The observations were executed as scheduled, and no
anomalies were noted.

   1.4 Completed Six Sets of NIC/1/2/3 7963 (DARKs: Warming Up)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
monitor the detector dark current during the interval between the end of
science observations and the exhaustion of cryogen and subsequent warming
of the dewar to > 100K.  The observations were completed as planned, and no
anomalies were noted.

   1.5 Completed Three Sets of NIC/2 7227 (A Search for Low
Mass/Sub-Luminous Companions to M-Stars)

       The Near Infrared Camera (Camera Two) was used to make a search for
low mass/sub-luminous companions to low mass M class stars.  Knowledge of
stellar and sub-stellar masses and luminosities at and below the ~0.08
M{sun} H-burning limit is of fundamental importance.  A dark calibration
image was also taken.  The observations were completed as planned, and no
problems were reported.

   1.6 Completed Eight Sets of STIS/CCD 8062 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude observations take in parallel with the prime science
observations.  The observations were completed as planned, and no problems
were reported.

   1.7 Completed NIC/1/2/3 7225 (Proper Motion of Stars Near SGR-A*)

       The Near Infrared Camera (Camera One, Two and Three) was used to
make astrometric proper motion observations of stars in the vicinity of
Sagittarius-A (a.k.a., NGC-4147).  Sgr-A may be a black hole with a mass
close to a million solar masses.  The observations were completed as
planned, and no anomalies were reported.

   1.8 Completed NIC/1/2/3 7239 (Surface Compositions of Kuiper Belt Objects)

       The Near Infrared Camera (Cameras One, Two, and Three) was used to
make observations of the Kuiper Belt object 1993SC in order to study its
surface composition.  The surfaces of Kuiper Belt Objects contain a record
of formative and dynamical processes in the outer solar system.  The
observations were executed as scheduled, and no anomalies were noted.

   1.9 Completed NIC/2 7226 (Search for Massive Jupiters)

       The Near Infrared Camera (Camera Two) was used to make a corographic
search for massive planets around the nearby, young main sequence stars
H5-080 andRE723+20.  Because of the extreme youth of these objects, any
low-mass brown dwarf and planetary companions will still be in a higher
luminosity phase and thus easily detectable.  A dark calibration image was
also taken.  The observations were executed as scheduled, and no anomalies
were noted.

   1.10 Completed Two Sets of NIC/2 7441 (A Search for Zodiacal Dust around
Bright Nearby Stars)

       The Near Infrared Camera (Camera Two) was used to make observations
of the zodiacal lights around the bright nearby star Sirius.  Dust
particles around a main sequence star are quickly removed by
Poynting-Robertson drag, therefore, the existence of such dust is an almost
certain signature of a current presence of a population of larger bodies in
orbit around the star.  The observations were executed as scheduled, and no
anomalies were noted.

   1.11 Completed NIC/2 7244 (Imaging of the Neptune Ring)

       The Near Infrared Camera (Camera Two) was used to make images of the
planet Neptune's rings.  The arcs in the Neptune ring have not been seen
since Voyager 2 imaged them in 1989.  NICMOS images made within a methane
band, which suppress the scattered light from Neptune, may reveal the ring
arcs, the brightest components of the Neptune ring system.  The
observations were executed as scheduled, and no anomalies were noted.

   1.12 Completed WF/PC-2 6838 (Dynamical Properties of Distant Field Galaxies)

       The WF/PC-2 was used to make observations of distant galaxies
contained in a location known as Field-0017.  A sample of several hundred
field galaxies to I = 24 (c.f. toI=22 z~0.5 from Lilly et al. 1995) is
being observed with the Keck telescope in a major new survey.  This HST
observational series is designed to match the field-of-view of the Keck
multiple-object spectrograph.  The observations were completed as
scheduled, and no problems were noted.

   1.13 Completed NIC/2/3 8063 (NICMOS Pure Parallel Sponge - Backup)

       The Near Infrared Camera (Cameras Two and Three) was used to make
observations taken in parallel with the prime science observations.  This
proposal is PRE-the new FOM default.  The observations were executed as
scheduled, and no anomalies were noted.

   1.14 Completed NIC/2 7835 (A Search for Superplanets Embedded in Beta
Pic & Vega-like Circumstellar Disks)

       The Near Infrared Camera (Camera Two) was used to make observations
of the circumstellar disk around star HD84117 in order to search for
superplanets.  The discovery of a circumstellar disk orbiting Beta Pictoris
as well as the discovery of other similar IR-excess Vega-like systems have
provided compelling evidence that our solar system, or at least many of the
processes which are thought to have created it, may be far from unique.
The observations were executed as scheduled, and no anomalies were noted.

   1.15 Completed WF/PC-2 7909 (POMS Test Proposal: WF II Parallel Archive
Proposal)

       The WF/PC-2 was used to make parallel observations as part of the
POMS test proposal.  This test proposal is designed to simulate scientific
plans.  The observations were completed as planned, and no problems were
reported.

   1.16 Completed NIC/1/2/3 7898 (Snapshot Survey of Proto-planetary Nebulae)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make snapshot survey observations of the protoplanetary nebula IRAS08005.
This is to help discern the structure of the nebulae and the evolutionary
sequence that produces axially symmetric planetary nebulae.  The
observations were executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 12
                                        Successful : 12

                          Scheduled Reacquisitions : 5
                                        Successful : 5

   2.2 FHST Updates:

                              Scheduled : 22
                             Successful : 21

       The roll delay update scheduled for 293/224438Z failed.  HSTAR 6728
was written.

   2.3 Operations Notes:

       Per ROP SR-1, the SSR EDAC error counter was cleared twice.

        As described in HSTAR 6727, the STIS MCE-1 reset while the low
voltage was on and while in an SAA interval.  Using ROP NS-12, the STIS
flight software error counter was reset at 293/1127Z.  MAMA-1 will be
recovered via SMS commanding at the time of the next MAMA-1 high voltage on
event, 294/104942Z.

       GENSLEWs were generated for slots 13 and 14 at 293/1250Z and at
293/2101Z.

       A CCS/RF SOC command test was conducted from approximately 293/1200Z
until 293/1600Z.  Test objectives, to test CR fixes and to exercise test
case 004, were met using CCS release 2.3.3.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH