HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2234

PERIOD COVERED:  0000Z (UTC) 10/21/98 - 0000Z (UTC) 10/22/98

Daily Status Report as of 295/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 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 IRAS06529.
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.

   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 Seven 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.  There was a Fixed Head Star tracker (FHST) Roll
Delay a 294/0949Z on FHST #1. HSTAR 6729 was writen.

   Also, there was a Guide Star Acquisition failure (1,0,1) to the gyro
control at 294/1258Z while the spacecraft was in ZOE due to FGS #1 SSLE.
HSTAR 6730 was written. No other anomalies were noted.

   1.5 Completed 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 stars Procyon and 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.  There was a Guide Star Acquisition (3,1,3) which
resulted in a Fine Lock Backup (3,0,3) at 294/2115Z which occurred during
ZOE. HSTAR 6731 was written.  The observations were executed as scheduled,
and no anomalies were noted.

   1.6 Completed WF/PC-2 8061 (POMS Test Proposal: WF-II Backup Parallel
Archive Proposal)

       This is a POMS test proposal designed to simulate scientific plans.
The proposal was executed as planned, and no anomalies were reported.

   1.7 Completed STIS/CCD 7464 (The Evolution of Massive Stars as a
Function of Metallicity: Closing the Loop Observationally)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the giant OB class star M-33-OB66 which is located in the
M-33 galaxy.  The galaxies of the Local Group provide the laboratories for
testing how massive stars evolve as a function of metallicity.  A
wavelength calibration image was also taken.  The observations were
executed as scheduled, and no anomalies were noted.

   1.8 Completed Two Sets of 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.

   1.9 Completed WF/PC-2 6423 (Structure in the Superstar Clusters in NGC 1569)

       The WF/PC-2 was used to make observations of the super star cluster
located in galaxy NGC-1569 in order to study its structure.  Cycle One data
shows that this cluster is as luminous and compact as globular clusters are
expected to have been at the same age.  The observations were completed as
planned and no anomalies were reported.

   1.10 Completed Two Sets of NIC/2/3 8082 (NICMOS pure parallel Fall 98)

       The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel observations while another instrument is prime.  The
observations were executed as scheduled, and no anomalies were noted.

       1.11 Completed STIS/CCD 7912 (STIS Parallel Archive Proposal -
Nearby Galaxies - Imaging and Spectroscopy)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
parallel observations of nearby galaxies.  This survey will be useful to
study the star formation histories, chemical evolution, and distances to
these galaxies.  These data will be placed immediately into the Hubble Data
Archive.  The observations were completed as scheduled, and no problems
were reported.

   1.12 Completed Two 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 taken in parallel with the prime science
observations.  The observations were completed as planned, and no problems
were reported.

   1.13 Completed STIS/CCD/MA1/MA2 7349 (Far UV Echelle Spectroscopy of
Ejecta in SN1006)

       The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was used
to make ultraviolet Echelle spectrographic observations of PG-0839+39
(a.k.a., SN1006).  The ejecta of the remnant of the Type Ia Supernova 1006
can be studied in a unique way, through the broad, high velocity absorption
features it causes in the spectrum of an OB subdwarf star fortuitously
located behind the remnant.  The observations were completed as planned,
and no anomalies were reported.

   1.14 Completed WF/PC-2 7431 (Snapshot Survey of Microlensed Source Stars)

       The WF/PC-2 was used to make snapshot survey images of microlensed
source star MACHO-95-3.  Gravitational microlensing surveys have revealed
an excess of lensing events over theoretical predictions toward both the
Large Magellanic Cloud and the Galactic Bulge.  The observations were
completed as planned, and no anomalies were reported.

   1.15 Completed WF/PC-2/NIC/1/2/STIS/CCD/MA1 7557 (Horizontal Branch
Stars in the Core of M-32)

       The WF/PC-2, the Near Infrared Camera (Cameras One and Two) and the
Space Telescope Imaging Spectrograph (CCD and MA1) were all used to make
observations of the galaxy M-32 in order to study its horizontal branch
stars.  A deep exposure of the M-32 core will be able to detect the
presence of any hot {Teff > 8000 K} horizontal branch {HB} stars that may
be present.  The observations were executed as scheduled, and no anomalies
were noted.

   1.16 Completed NIC/2 7897 (Probing Planetary Formation Around
Main-Sequence Stars: A Snapshot Survey)

       The Near Infrared Camera (Camera Two) was used to make snapshort
survey images of the main sequence star HD221354 probing for planetary
formation.  The IR excess main-sequence stars host cool circumstellar dust
disks, which are most likely replenished by the debris of unseen
planetesimals.  The observations were completed as scheduled, and no
problems were noted.

   1.17 Completed FOC/96 7478 (The Mass of the Classical Cepheid ADS 14859)

       The Faint Object Camera (f/96) used to make astrometric observations
of the classical Cepheid star ADS14859 and several other reference stars in
order to be able to determine its mass.  The determination of accurate
masses for Cepheid variable stars is required for quantitative
understanding of these primary distance indicators, and also the related
questions of the accuracy of evolutionary calculations and the role played
by massive stars in galactic evolution.  The observations were completed as
planned, and no problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 14
                                        Successful : 13

       There was a Guide Star Acquisition failure (1,0,1) to the gyro
control at 294/1258Z while the spacecraft was in ZOE due to FGS #1 SSLE.
HSTAR 6730 was written. See Scheduled activity 1.4 .

       There was a Guide Star Acquisition (3,1,3) which resulted in a Fine
Lock Backup (3,0,3) at 294/2115Z which occured during ZOE. HSTAR 6731 was
written. See the scheduled operations item 1.5 .



                          Scheduled Reacquisitions : 5
                                        Successful : 5

   2.2 FHST Updates:

                              Scheduled : 31
                             Successful : 30

       There was a Fixed Head Star Tracker (FHST) Roll Delay a 294/0949Z on
FHST #1. HSTAR 6729 was writen. See Scheduled Activity 1.4 .

   2.3 Operations Notes:

       There was a STIS MCE #1 reset at 294/2125Z after exiting from a
south Atlantic Anomaly  (SSA 4). The high voltage was on. A status buffer
error message was received. HSTAR 6732 was written.  Recovery will be
through SMS at the next MAMA 1 High Voltage turn on at 299/0926Z.

       There was a STIS MCE #2 Reset at 295/0022Z. The high voltage was not
on.  The spacecraft was in a South Atlantic  contour (SAA #2). HSTAR 6733
was written.  Recovery will occur through the SMS at the next MAMA 2 High
Voltage turn on at 299/0811Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH