HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1870

PERIOD COVERED:  0000Z (UTC) 05/02/97 - 0000Z (UTC) 05/05/97

Daily Status Report as of 125/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Seven 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.

   1.2 Completed Two Sets of WF/PC-2 6934 (WF/PC-2 Cycle 6 Photometric
Zero-Point)

       The WF/PC-2 was used to make observations of standard stars P041-C
and P330-E in order to complete a zero-point calibration observation.  The
purpose of this program is to verify the synthetic zero-point of the
WF/PC-2 filters.  The observation was executed as scheduled, and no
anomalies were noted.

   1.3 Completed WF/PC-2 6902 (WF/PC-2 Cycle 6 Photometric Calibration
Monitor UV/OPT Standard)

       The WF/PC-2 was used to make both ultraviolet and optical
photometric observations of the standard star GRW+70D582 as part of a Cycle
6 calibration procedure.  This observations was done immediately before and
after decontamination procedures.  The observations were completed as
planned, and no problems were reported.

   1.4 Completed WF/PC-2 5987 (X-Ray Luminous Clusters of Galaxies)

       The WF/PC-2 was used to obtain images of a distant clusters of
galaxies called MS11137+66.  These clusters were chosen since they are
x-ray luminous.  The observations were executed as scheduled, and no
anomalies were noted.

   1.5 Completed Two Sets of WF/PC-2 6359 (Core Properties of the Bulges of
Spiral Galaxies)

       The WF/PC-2 was used to make snapshot survey observations of spiral
galaxies NGC-6239 and NGC4501 in order to study their central bulges.  The
aim is to investigate the core properties, correlations with global
galactic properties, and the frequency of occurrence of multiple and/or
miscentered nuclei.  The observations were completed as scheduled, and no
anomalies were noted.

   1.6 Completed NIC/3 7043 (NICMOS Focus Monitor)

       The Near Infrared Camera (Camera 3) was 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.

   1.7 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.

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

       The Near Infrared Camera (Camera Two) was used to make observations
of object NGC-3606 in order to monitor the effects of coronagrapghic hole.
The purpose of this proposal is to take lamp flats with Camera Twp (and
Cameras One and Three occasionally) to monitor the location of the
coronographic spot.  The observations were completed as scheduled, and no
anomalies were reported.

   1.9 Completed Two Sets of WF/PC-2 6346 (Snapshot Survey of the
Ultraluminous IRAS Galaxy Sample-Part 1 High)

       The WF/PC-2 was used to make snapshot survey observations of the
ultraluminous IRAS galaxies QDOTULIR08 and CL-ULIR225.  These data will be
searched for multiple cores, which imply a merger has occurred, and for
starburst regions.  The observations were executed as scheduled, and no
anomalies were noted.

   1.10 Completed NIC1/2/3 7049 (NICMOS Absolute Photometry Test)

       The Near Infrared Cameras (Cameras One, Two and Three) were used to
make observations of standard star P177D using each NICMOS camera at five
different wavelengths spanning the NICMOS wavelength range.   Biases and an
internal flat calabration image were also taken.  The observations were
completed as planned, and no problems were reported.

   1.11 Completed STIS/CCD 7130 (STIS/Spectroscopy of the Brown Dwarf GL229B)

       The Space Telescope Imaging Spectrograph (Charged Coupled Device)
was used to make spectrographic observations of stars HD42581 and GL229B,
which is a brown dwarf binary system.  The stars have a 7.5 arcsecond
seperation.  So far only ground-based infrared observations of GL229B have
been reported and used to model the system's temperature and mass.  A
wavelength calibration image was also taken.  The obsevations were
completed as scheduled, and no anomalies were reported.

   1.12 Completed NIC/2/3 7048 (NICMOS Parallel Thermal Background Test)

       The Near Infrared Cameras (Cameras 2 and 3) 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.

   1.13 Completed WF/PC-2 6352 (Dwarf Elliptical Galaxy Snapshots)

       The WF/PC-2 was used to survey FCC136, from a sample of 30 dwarf
elliptical galaxies.  The observations were completed as planned, and no
anomalies were reported.

   1.14 Completed WF/PC-2 6363 (The Environments and Host Galaxies of
BL-Lac Objects)

       The WF/PC-2 was used to make snapshot survey observations of BL-Lac
object MS0350.0-3 in order to study its environment and its host galaxies.
The goal is to investigate systematic trends in host galaxy type, unusual
morphological features, nearby companion galaxies, etc.  The observations
were executed as scheduled, and no anomalies were noted.

   1.15 Completed Three Sets of NIC/1/2/3 7044 (NICMOS Point Spread
Function Characterization)

       The Near Infrared Camera's (Cameras One, Two and Three) were used to
make observations of standard star P272D in order to study the NICMOS's
point spread function (PSF).  This program allows measurement of the
encircled energy as a function of radius for stellar objects at both short
and long wavelengths in the NICMOS bandpass, and provide some PSF images
for a PSF library.  During the second iteration of this proposal, at
124/1211Z, there was a NICMOS filter wheel #2 position error reported.
Tjis message means that the wheel did not reach its position on the first
try, and that a retry operation was in progress.  HSTAR 6051 was generated.
The observations were executed as scheduled, and no anomalies were noted.

   1.16 Completed STIS/MA1/S/C 7105 (STIS MAMA Turn-on)

       The STIS/MA1 was successfully tuned on.  This will be the first
high-voltage ramp-up of the far-ultraviolet and near-ultraviolet MAMA
detectors.  The operations was executed as scheduled, and no anomalies were
noted.
Dark

   1.17 Completed FGS 6566 (Calibrating the Mass-Luminosity Relation at the
End of the Main Sequence)

       The FGSs were used to make astrometric observations of the
components of the low-mass, binary system, star GJ2005 in order to make a
calibrations of the mass-luminosity relation at the end of the main
sequence.  The individual stars have masses of less than 0.2 solar masses.
The observations were completed as scheduled, and no problems were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 22
                                        Successful : 22

                          Scheduled Reacquisitions : 28
                                        Successful : 28

   2.2 FHST Updates:

                              Scheduled : 39
                             Successful : 39

   2.3 Operations Notes:

       A relatively quiet operational weekend was experienced.

       The STIS CCD was re-initialized at 12/1825Z.  A STIS event flag was
set at 123/2129Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science and SMOV operations.

       NICMOS flight software version 4.07 is scheduled to be intstalled
this morning.

/DMH