HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1956

PERIOD COVERED:  0000Z (UTC) 09/04/97 - 0000Z (UTC) 09/05/97

Daily Status Report as of 248/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 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.

   1.2 Completed Three Sets of NIC/1/2/3 7596 (NICMOS MULTIACCUM Dark
Characterization)

       The Near-Infrared Camera Multi-Object Spectrograph (Cameras One, Two
and Three) was used to make a NICMOS MULTIACCUM dark characterization.  The
purpose of this proposal is to monitor the darks using three different
MULTIACCUM sequences.  The observations were executed as scheduled, and no
anomalies were noted.

   1.3 Completed Three 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.

   1.4 Completed Two sets of  Sets of STIS/CCD 7601 (CCD Dark and Bias Monitor)

       The Space Telescope Imaging Spectrograph (CCD) was used to conduct
bias and dark monitoring.  Also, observations were made to track the growth
of hot pixels on the CCD in general and within the various target
acquisition apertures specifically.  The observations were completed as
planned, and no anomalies were reported.

   1.5 Completed Two Sets of WF/PC-2 7618 (WF/PC-2 Cycle 7 Photometric
Monitor UV/OPT STD)

       The WF/PC-2 was used to make observations of the standard star
GRW+70D582 as part of a Cycle 7 photometric monitoring program.  This
ultraviolet spectrophotometric standard star was observed in a variety of
filters and cameras to monitor the photometric stability and quantum
efficiency of WF/PC-2 from the far-ultraviolet to near-infrared.  The
observations were completed as scheduled, and no problems were reported.

   1.6 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 6 hours.  A variety of internal images are
taken before and after the decontamination in order to verify its success
and to monitor the instrument's health.  The procedures were conducted as
scheduled, and no problems were reported.

   1.7 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.

   1.8 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-7126 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.

   1.09 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 PKS2204-20 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 guide star acquisiton for this proposal defaulted to fine lock on FGS-3
only.  HSTAR 6164 was written.  Otherwise, the observations were executed
as scheduled, and no further anomalies were noted.

   1.10 Completed STIS/CCD 7785 (The Nature of GRB970228 and Its
Surrounding Nebulosity)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the gamma ray burster GRB970228 and its surrounding
nebulosity.  Although four orbits have already been devoted to observing
this object with WF/PC-2 in PC mode, no clear detection of the reported
nebulosity surrounding the point source burster has been obtained.  The
observations were executed as scheduled, and no anomalies were noted.

   1.11 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.

   1.12 Completed WF/PC-2 6431 (Determination of the Extragalactric
Distance Scale)

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

   1.13 Completed 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.

   1.14 Completed NIC/1/2/3 7328 (High Resolution IR Imaging Survey (IRIS)
of the Centers of the Nearest Active Galaxies)

       The Near Infrared Camera (Camera One, Two and Three) was used to
make high resolution infrared observations of the nearest active Markarian
galaxy IRAS2302-0 in order to study its inner nuclear region.  Observing in
the near-IR minimizes the dust obstruction and maximizes sensitivity to the
old stellar population which dominates the mass.  The  observations were
executed as scheduled, and no anomalies were noted.

   1.15 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-6171 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.

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 : 17
                             Successful : 17

   2.3 Operations Notes:

       The NSSC-1 status buffer was dumped and reset at 247/1230Z per ROP NS-3.

       ESTR #2 reconditioning was completed at 247/1310Z.

       A new STIS bad pixel table was uplinked at 247/1648Z.

       The SSR interrupt log was dumped at 247/2259Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH