HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1887

PERIOD COVERED:  0000Z (UTC) 05/28/97 - 0000Z (UTC) 05/29/97

Daily Status Report as of 149/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed STIS/CCD/MA1/MA2 7096 (STIS MAMA Sensitivity on Axis)

       The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to
make observations of BD+75D325 in order to measure STIS sensitivity as a
function of wavelength near the center of the detector for all
spectroscopic modes, and check transmissions of all filters and filtered
slits.  The observations were executed as scheduled, and no anomalies were
noted.

   1.2 Completed Six Sets of WF/PC-2 7553 (Pure Parallel Archive Survey II)

       WF/PC-2 parallel observations were obtained in the ultraviolet in
search for interesting objects.  This program is designed to find
extragalactic sources with near ultraviolet excesses (3000 A0) outside the
galactic plane and far ultraviolet sources (1600 A0) in the galactic plane.
The procedure was executed as scheduled, and no anomalies were reported.

   1.3 Completed Five Sets of NIC/1/2/3 7048 (NICMOS Parallel Thermal
Background Test)

       The Near Infrared Cameras (Cameras One, Two and Three) were used to
make observations of an object designated as Target-1 in order execute
measurements of the stability of the HST thermal emissions.  The
observations were executed as scheduled, and no problems were reported.

   1.4 Completed Three Sets of STIS/CCD 7092 (CCD Dark Rate and Read Noise)

       Observations were taken to measure CCD dark current and gather data
for making super darks.  The observations were completed as planned, and no
anomalies were reported.

   1.5 Completed STIS/MA2 7093 (Dark Measurement for MAMA Band 1, and Band 2)

       The Space Telescope Imaging Spectrograph (MA2) was used to make dark
calibration observations of the MAMA Band 1 and Band 2.  These observations
are to be used to establish that the detectors are performing nominally,
that no internal movement of the MCP has taken place, and to establish the
dark level in orbit for a given operating temperature.  The observations
were completed as planned, and no anomalies were reported.

   1.6 Completed WF/PC-2 7588 (Measuring Q0 With Type IA Supernovae)

       The WF/PC-2 was used to make observations of supernova SN1997A1 in
order to measure the Q0 parameter.  This is to produce a precise Hubble
diagram which can be used to measure the cosmic deceleration and global
curvature of the universe.  HST can make an essential contribution by
providing photometry with substantially higher precision and better
temporal coverage than can be obtained from the ground.  The observations
were executed as scheduled, and no anomalies were noted.

   1.7 Completed STIS/CCD 7063 (STIS SMOV CCD Contamination Monitor)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard star GD153 in order to  measure flux and look for
any gross changes over time that might indicate contamination.  The
observations were completed as scheduled, and no anomalies were reported.

   1.8 Completed Three Sets of WF/PC-2 6609 (The WF/PC-2 B-Band Parallel
Survey: A Systematic and Synoptic Study )

       The WF/PC-2 was used to make B-Band survey observations in parallel
with the prime science observations.  A total of 216 exposures will be
taken over a period of time to make a statistical study of the formation
and evolution of the galaxies.  The observations were executed as
scheduled, and no anomalies were noted.

   1.9 Completed STIS/CCD  7095 (STIS CCD Vignetting, Spatial Resolution in
Spectroscopic Modes)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the point source GD153 in order to study the vignetting and
special resolution of the CCDs in the spectroscopic mode.  This is to
measure STIS relative response to a point source in the first order modes
along the slit direction.  The observations were executed as scheduled, and
no anomalies were noted.

   1.10 Completed NIC/1/2/3 7043 (NICMOS Focus Monitor)

       The Near Infrared Cameras (Cameras One, Two and Three) were used to
make observations of NGC-3603 in order to make focus calibration and
monitoring measurements.  This proposal is built to run NIC/1/2 focus
sweeps on a weekly basis, and NIC/3 focus sweeps twice a week during SMOV.
The observations were executed as scheduled, and no anomalies were noted.

   1.11 Completed NIC/2 7154 (NICMOS Coronographic Hole Monitor)

       The Near Infrared Camera (NIC Two) was used to make observations of
object NGC-3603 in order to monitor the effects of coronagrapghic hole.
The purpose of this proposal is to take lamp flats with camera 2 (and
cameras 1 and 3 occasionally) to monitor the location of the coronographic
spot.  The observations were completed as scheduled, and no anomalies were
reported.

   1.12 Completed WF/PC-2 6587 (Black Holes and Cores of Early-Type Galaxies)

       The WF/PC-2 was used to make observations of early-type galaxy
NGC-6776 in order to study its nuclear core region and its possible black
hole.  The campaign to find black holes in the centers of galaxies using
HST has so far been highly successful.  The observations were completed as
planned, and no problems were reported.

   1.13 Completed WF/PC-2 6119 (Snapshot Survey For Companions of Planetary
Nebula Nuclei)

       The WF/PC-2 was used to make images of the planetary nebui NGC-7009
in order to search for companions to its nuclei.  The observations were
executed as scheduled, and no anomalies were noted.

   1.14 Completed STIS/CCD/MA1/MA2 7101 (STIS32M - SMOV Slit Transmission MAMA)

       The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to
make observations of HZ21 in order to determine the relative throughput vs.
wavelength for a variety of commonly used slits.  The observations were
executed as scheduled, and no anomalies were noted.

   1.15 Completed WF/PC-2 6802 (Cosmology with The Medium Deep Survey)

       The WF/PC-2 was used to make observations in parallel with the prime
science observations as part of the Medium Deep Survey.  These parallel MDS
exposures have provided unique high resolution images which clearly
supplement the primary HST surveys.  The observation were executed as
scheduled, and no anomalies were noted

   1.16 Completed WF/PC-2 6909 (WF/PC-2 Cycle 6 Calibration: Earth Flats

       The WF/PC-2 was used to make observations of the bright Earth to
obtain streak flats which are used to construct high quality flat fields
for the WF/PC-2 filter set.  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 : 10
                                        Successful : 10

   2.2 FHST Updates:

                              Scheduled : 14
                             Successful : 14

   2.3 Operations Notes:

       The Battery #3 Capacity Test was begun at 149/0048Z.  As detailed in
HSTAR 6081, It was expected that the execution of the re-conditioning block
load would enable HMAC 16 and 17 and then immediately disable HMAC 16 since
the EPS processing flag was set to CP Disable.  However, HMAC 16 remained
enabled until two CCC K relays opened, and the expected configuration was
finally met.  This initial misconfiguration represented a deviation from
the understanding of the operation of the KRSWCC.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science and SMOV operations.

/DMH