HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1953

PERIOD COVERED:  0000Z (UTC) 08/29/97 - 0000Z (UTC) 09/02/97

Daily Status Report as of 245/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of 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 stars HD203608,
LHS223, LHS531 and HD1581.  This star is known to be within 10 parsecs of
the Sun.  The observations were executed as scheduled, and no anomalies
were noted.

   1.2 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.

   1.3 Completed Five Sets of NIC/1/2/3 7412 (An HST/NICMOS Search for
Young Brown Dwarfs and Giant Planets)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations taken in parallel with the prime science observations to
be part of a survey to look for large planets and/or small brown dwarf
stars which are in orbit around T-Tauri class stars RXJ11498-7, RXJ09029-7,
RJX10053-7, RXJ1158-7 and RXJ12436-7.  At an age of 2 to 20 million years
these low-mass companions will be considerably brighter than more evolved
brown dwarfs or giant planets orbiting main-sequence stars, and hence will
be much easier to detect.  The observations were completed as planned, and
no anomalies were noted.

   1.4 Completed Eleven 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).  No details were
given.  The observations were executed as scheduled, and no anomalies were
noted.

   1.5 Completed Twelve 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 Four 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.

   1.7 Completed Eight Sets of STIS/CCD 7783 (STIS)

       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.

   1.8 Completed WF/PC-2 6460 (Where are the Dozens of Predicted
Cataclysmic Variables in Globular Clusters?)

       The WF/PC-2 was used to make observations of the globular cluster
NGC-6093 in order to search for predicted cataclysmic variables.  WF/PC-2
imaging of globular cluster cores provides us with a unique opportunity to
detect erupting cataclysmic variables because they should be relatively
common in the core region.  The observations were executed as scheduled,
and no anomalies were noted.

   1.9 Completed Four Sets of 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.  The observations were executed as scheduled, and no anomalies
were noted.

   1.10 Completed Seven Sets of 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.  The observations were
executed as scheduled, and no anomalies were noted.

   1.11 Completed Two Sets of STIS/CCD 7276 (Synoptic Monitoring of
Seasonal Phenomena on Mars)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
seasonal ultraviolet imaging of the planet Mars.  This season includes the
formation of the north polar cap and hood system, a process which is not
well documented; the start of the classic dust storm season on Mars, when
large dust storms have often occurred; and an active cycle of small dust
storms in Hellas.  These observations will complete a period of continuous
monitoring of Mars which commenced in Cycle 6.  A guide star acquisition
loss-of-lock occured during a T3 slews at 241/1411Z. HSTAR 6161 was
written.  No other problems were reported.

   1.12 Completed WF/PC-2 6514 (The Horizontal Branch of the M31 Dwarf
Spheroidal Companion And II)

       The WF/PC-2 was used to make observations of the Andromeda Galaxy
(a.k.a., M-31) and its dwarf sphereoid companion galaxy Andromeda II
(a.k.a., M-32).  The dwarf spheroidal companions to the Galaxy show a large
diversity in their horizontal branch (Hbs) morphologies, with many
possessing redder Hbs than would be expected from their metal abundances.
The observations were completed as planned, and no problems were reported.

   1.13 Completed Three Sets of NIC/1/2 7690 (NICMOS Pointed Super Flats)

       The Near Infrared Camera (Cameras 1 and 2) was used to make super
flat field calibration observations.  The observations will be used to
build high signal/noise ratio NICMOS flat fields for the different filters.
The observations were executed as scheduled, and no anomalies were noted.

   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 FOC/96 6702 (Multicolor Imaging Polarimetry of Obscured
Seyfert 2 Nuclei)

       The Faint Object Camera (f/96) was used to make multi-color imaging
observations of the active galactic nuclei of Seyfert galaxy Mark-477 in
order to measure its polarized flux.  An internal flat and a dark
calibration image were also taken.  The observations wereexecuted as
scheduled, and no anomalies were noted.

   1.16 Completed WF/PC-2 6559 (An Imaging Study of Asteroids)

       The WF/PC-2 was used to make multi-color observations of the main
belt asteroid 1220-CROCU.  This asteroid will reach perigee during Cycle 6.
The images will be searched for companions.  The observations were executed
as scheduled, and no anomalies were noted.

   1.17 Completed NIC/1/2/3 7447 (The Cosmological Evolution of Quasar Host
Galaxies)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of galaxy SGP4-39 as part of a survey to study the
cosmological evolution of galaxies which host quasars.  Other point spread
function observations were taken to test the calibration of the cameras.
The observations were executed as scheduled, and no anomalies were noted.

   1.18 Completed Two Sets of NIC/1 7214 (Variability of Galactic Center
Sources)

       The Near Infrared Camera (Camera One) was used to make observations
of the variability of the galactic center object S452-F.  A broad range of
accretion disk models with black hole masses appropriate to the Galactic
Center {0.5-3.0 million solar masses} implies variability at the 2-25%
level on time scales as short as 10 minutes.  The observations were
executed as scheduled, and no anomalies were noted.

   1.19 Completed FGS 6486 (Orbits of Pre-Main Sequence Binaries)

       The FGSs were used in the TRANS mode to make astrometric
observations of the per-main sequence, binary star system V853-OPH  in
order to help compute its orbital parameters.  The observations will be
used to make orbital maps of T-Tauri class stars.  From these orbital
parameters they will be able to derive the first reliable mass measurements
for low mass pre-main sequence stars.  The observations were completed as
scheduled, and no anomalies were reported.

   1.20 Completed WF/PC-2 6535 (Tight Clusters of Newly Born Massive Stars
in Compact H2 Regions of the Magellanic Clouds)

       The WF/PC-2 was used to make high spatial resolution imaging
observations of the newly born massive stars in the tight cluster SMC-N88
which is located in a tight H2 region in the Small Magellanic Cloud.  These
are the youngest massive stars accessible to direct observations at
ultraviolet and optical wavelengths.  The observations were completed as
planned, and no anomalies were reported.

   1.21 Completed STIS/CCD 7138 (Imaging and Spectroscopy of the Bright
Arcs Around the Most Luminous X-Ray Cluster RXJ 1347.5-1145)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the arcs surrounding the cluster RXJ1347.5B which is the
brightest know X-ray cluster.  The cluster itself is at a redshift of 0.451
and there are two bright arcs symmetrically situated at about 35 arcseconds
from the brightest cluster member.  The observations were completed as
planned and no problems were reported.

   1.22 Completed Five 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 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.

   1.23 Completed STIS/MA2 7644 (STIS NUV-MAMA Monitoring Flats)

       The Space Telescope Imaging Spectrograph (MA2) was used to obtain
near ultraviolet-MAMA flat-field observations for the construction of
bi-monthly delta-flats.  The observations were completed as planned, and no
problems were reported.

   1.24 Completed WF/PC-2 6437 (Sins: Supernova Intensive Study - Cycle 6)

       The WF/PC-2 was used to make observations of the supernova SN1996X
and its circumstellar matter.  The observations were completed as planned,
and no problems were noted.

   1.25 Completed STIS/MA1 7728 (STIS FUV-MAMA Monitoring Flats)

       The Space Telescope Imaging Spectrograph (MA1) was used for the STIS
MAMA flat monitoring program.  This program will obtain
far-ultraviolet-MAMA flat-field observations for the construction of
delta-flats for select modes.  The observations were completed as planned,
and no anomalies were reported.

   1.26 Completed Two 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.

   1.27 Completed Two Sets of STIS/CCD/MA1 7722 (Lamp Flux Measurements)

       The Space Telescope Imaging Spectrograph (CCD and MA1) was used to
make lamp flux calibration measurements to determine the optimal
configuration for obtaining science-contemporaneous wavecals.  The
observations were executed as scheduled, and no anomalies were noted.

   1.28 Completed 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.

   1.29 Completed STIS/CCD 7672 (STIS CCD Sensitivity Monitor)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard star AGK+81D266 in order to monitor the
sensitivity of each CCD grating mode to detect any change due to
contamination or other causes.  The observations were completed as
scheduled, and no anomalies were noted.

   1.30 Completed Two Sets of NIC/1/2 7692 (Polarizers Calibration)

       The Near Infrared Camera (Cameras One and Two) was used to make
observations of the standard stars BD32-3739 and HD64299 as part of a
polarization calibration.  The polarization and position angle of
polarization are measured {at the same ORIENT} 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.

   1.31 Completed NIC/2 7634 (CCD Flat-Field Stability and Cosmetic Defect
Fraction)

       The Space Telescope Imaging Spectrograph (CCD) was used to
investigate and monitor the STIS CCD imaging flat-field stability and
cosmetic defects over monthly periods though out Cycle 7.  The observations
were executed as scheduled, and no anomalies were noted.

   1.32 Completed Two Sets of WF/PC-2 6431 (Determination of the
Extragalactric Distance Scale)

       The WF/PC-2 was used to make observations of the galaxies NGC-1326
and NGC-1425 to be used in measuring the periods of Cepheid variable stars
within these galaxies.  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.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 25
                                        Successful : 25

                          Scheduled Reacquisitions : 21
                                        Successful : 21

       A guide star acquisition loss-of-lock occured during a T3 slew at
241/1411Z. HSTAR 6161 was written. (See observationial note 1.11)

   2.2 FHST Updates:

                              Scheduled : 50
                             Successful : 50

   2.3 Operations Notes:

       The Eclipse Management was executed dung partial eclipse of the sun
which occurred over Australia and New Zealand. HST passed through the
moon's shadow twice at 224/2203Z and 245/0006Z with out incident. The
Battery ROC and DF-224 CCSs failure checks were disabled at 244/1904Z and
re-enabled at 245/0024Z.  All went as planned.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH