HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1945

PERIOD COVERED:  0000Z (UTC) 08/19/97 - 0000Z (UTC) 08/20/97

Daily Status Report as of 232/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed 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 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.

   1.3 Completed 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 star
P330E-Cal.  The standard star was observed with NIC1 & NIC2 at six
different wavelengths spanning the NICMOS wavelength range.  The
observations were completed as planned, and no anomalies were reported.

   1.4 Completed 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 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.

   1.5 Completed STIS/CCD/MA1 7104 (STIS Onboard Doppler Processing
Checkout {STIS35M})

       The Space Telescope Imaging Spectrograph (CCD/MA1) was used to make
observations of the standard star BD+332642 in order to perform an onboard
Doppler processing checkout.  This test is intended to demonstrate the
capability of the STIS flight software to correct for wavelength shifts
during exposures due to the motion of HST relative to the target.  The
observations were executed as schedule, and no anomalies were noted.

   1.6 Completed 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.

   1.7 Completed Two 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.

   1.8 Completed WF/PC-2 7619 (WF/PC-2 Cycle 7 Decontamination)

       The WF/PC-2 was used to conduct a Cycle 7 decontamination procedure.
Ultraviolet-blocking contaminants are removed, and hot pixels cured, by
warming the CCDs to +20C for six hours.  A variety of internal images are
taken before and after the decontamination in order to verify its success
and to monitor the instrument health.  The procedures were conducted as
scheduled, and no problems were reported.

   1.9 Completed NIC/2 7330 (The Fueling of Active Nucleii: A NICMOS
Snapshot Survey)

       The Near Infrared Camera (Camera Two) was used to probe the dark
matter distribution of NGC-5033, far from the center, by observing
intervening absorption from the MgII doublet (lambda 2800) in the spectrum
of one background QSO located in a geometrically optimal position.  HST
observations are required because this feature is in a wavelength range not
accessible from the ground, and the QSO magnitudes and expected strength of
absorption make IUE observations unfeasible.  The proposal completed as
expected with no anomalies.

   1.10 Completed Two Sets of STIS/CCD 7605 (STIS CCD Target Acquisition
Workout)

       Following updates of STIS flight acquisitions and acq/peak software,
there was a redemonstration of the capability to perform point source and
peakup acquisitions of the bright target G93-48.  Then there was a
demonstration of the ability of the STIS flight software to locate targets
more typical of those in the science program.  The acquisitions were
completed as planned, and no anomalies were reported.

   1.11 Completed STIS/MA1 7722 (Lamp Flux Measurements)

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

   1.12 Completed NIC/2 7418 (NICMOS Imaging of Young Stellar Object
Circumstellar Nebulosity)

       The Near Infrared Camera (Camera Two) was used to make images of the
circumstellar nebula surrounding the young stellar object IRAS04302 in the
nearby Taurus Molecular Clouds as seen only indirectly via scattered light.
At optical wavelengths these systems show bipolar reflection nebulae
separated by a central dark absorption lane obscuring direct view of the
star.  The observations were completed as planned and no anomalies were
reported.

   1.13 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
MS0302.5+1.  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.

   1.14 Completed Three Sets of NIC/2 7495 (Survey of Gravitational Lenses
as Cosmological Tools)

       The Near Infrared Camera (Camera Two) was used to make survey
observations of B0218+357 by obtaining deep, high-resolution images in the
optical and near IR in order to see if they are gravitational lenses and
could be used as a cosmological tool.  The observations were executed as
scheduled, and no anomalies were noted.

   1.15 Completed NIC/2 7331 (Near-IR Properties of the Bulges of Spiral
Galaxies)

       The Near Infrared Camera (Camera Two) was used to make infrared
observations of the bulge in spiral galaxy NGC-2104.  Near-IR data at HST
resolution are essential for correcting for the effect of dust and will
enable us to derive robust nuclear properties for the sample.  The
observations were executed as scheduled, and no anomalies were noted.


2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 14
                                        Successful : 13

       The single FGS-3 guide star acquisition scheduled at 231/235855
failed fine lock walkdown, affecting both the STIS 7659 and the NICMOS 7418
proposals.  See tomorrow's report for science impacts.  HSTAR 6155 was
written.

                          Scheduled Reacquisitions : 4
                                        Successful : 4

   2.2 FHST Updates:

                              Scheduled : 23
                             Successful : 23

   2.3 Operations Notes:

       ESTR-3R re-conditioning was accomplished at 231/1930Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH