HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1951

PERIOD COVERED:  0000Z (UTC) 08/27/97 - 0000Z (UTC) 08/28/97

Daily Status Report as of 240/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:


   1.1 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.

   1.2 Completed STIS/CCD 7313 (Systematic Investigation of Comet Hale-Bopp)

       The Space Telescope Imaging Spectrograph (CCD) was used in the
continued systematic investigation of Comet Hale-Bopp.  Emissions from OH,
CS, and the CO Cameron system were monitored, which allows comparison with
the heliocentric variation in the production rates of water, CS2, and CO2
(or possibly CO, if electron impact on CO dominates the excitation of the
Cameron bands).  The observations were executed as scheduled, and no
problems were reported.

   1.3 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-1326A
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.

   1.4 Completed Two Sets of WF/PC-2 7626 (UV Throughput)

       The WF/PC-2 was used to make observations of PPL-15 as part of an
ultraviolet throughput monitoring program.  The observations were completed
as planned, and no problems were reported.


   1.5 Completed Four Sets of STIS/CCD 7781 (STIS Non-Scripted Parallel
Archive Proposal - Full Orbit)

       The Space Telescope Imaging Spectrograph (MA2) 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.

   1.6 Completed NIC/2 7327 (Elliptical Galaxy Evolution at High Redshift:
IR Imaging of 60 Distant Clusters)

       The Near Infrared Camera (Camera Two) was used to make infrared
observations of high redshifted elliptical galaxies in galactic cluster
CL1518+463.  By measuring the structural properties of high redshift
cluster elliptical galaxies, it is hoped to resolve the controversy
regarding the age and formation history of bright cluster ellipticals.  The
observations were executed as scheduled, and no anomalies were noted.

1.7 Completed 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.  The observations were
completed as planned, and no problems were reported.

   1.8 Completed Two Sets of WF/PC-2/NIC/2 6865 (Stellar Populations in IC
1613)

       WF/PC-2 and the Near Infrared Camera (Camera Two) were used to
investifgate IC 1613, one of the gas rich dwarf galaxies in the Local
Group.  WF/PC-2 deep frames will be obtained in V, I and B in order to
study the color- magnitude diagram and the luminosity function of
individual stars making up the galaxy.  These data will provide constraints
on the age and metallicity of the stellar population in this object.
NICMOS parallel exposures were obtained in J and H filters, in order to
determine the temperature structure of the lower RGB in outer part of IC
1613.  The observations were executed as scheduled with no reported
anomalies.

   1.9 Completed Six Sets of NIC/1/2/3 7726 (NICMOS One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make one orbit parallel calibration observations.  The observations were
executed as scheduled, and no anomalies were noted.

   1.10 Completed WF/PC-2/STIS/CCD/NIC/2 7240 (High Spatial Resolution
Imaging of Comet Hale-Bopp)

       The WF/PC-2, the Space Telescope Imaging Spectrograph (CCD), and the
Near Infrared Camera (Camera 2) were used for high-resolution imaging of
the nuclear and inner coma regions of Comet Hale-Bopp.  The primary
scientific objective is to probe the production of gas and dust in the
inner coma very near the nucleus and to monitor the emergence and activity
of jet structures.  The observations completed as planned, and no anomalies
were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 7
                                        Successful : 7

                          Scheduled Reacquisitions : 8
                                        Successful : 8

   2.2 FHST Updates:

                              Scheduled : 11
                             Successful : 11

   2.3 Operations Notes:

       The RMGA Calibration was completed at 239/1346Z.

       The SSR Interrupt Log was dumped at 240/0300Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH