HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1889

PERIOD COVERED:  0000Z (UTC) 05/30/97 - 0000Z (UTC) 06/02/97

Daily Status Report as of 153/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of WF/PC-2 7588 (Measuring Q0 With Type IA
Supernovae)

       The WF/PC-2 was used to make observations of supernova SN1997A4 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.

   1.2 Completed FOC/96 6516 (SN-1991T: Reflections of Past Glory)

       The Faint Object Camera (f/96) was used to make observations of the
host galaxy NGC-5139 in order to study its supernova SN-1991T.  This is to
try to resolve a light echo inferred from ground based measurements.  These
observations will conclusively demonstrate (or repudiate) the presence of a
light echo around SN~1991T.  The observations were executed as scheduled,
and no anomalies were noted.

   1.3 Completed FOC/96 6930 (FOC Neutral Density Filter Calibrations)

       The Faint Object Camera (f/96) was used to make observations of
NGC-5139 to make neutral density filter calibration observations.
Observations of the core of NGC-5139 will provide a wide range of
magnitudes and a large number of stars for the analysis, along with direct
comparison with previous calibrations done at different wavelengths.  The
observations were completed as planned, and no anomalies were reported.

1.4 Completed WF/PC-2 6837 (The Ultraviolet Properties of "Dwarf'' Seyfert
1 Nuclei)

       The WF/PC-2 was used to make ultraviolet observations of the
"dwarf", type one, Seyfert galaxy NGC-4143.  This class of "dwarf" Seyferts
populate the faint end of the local AGN luminosity function and hold
important clues to the evolution of the entire AGN population.  The
observations were completed as scheduled, and no problems were reported.

   1.5 Completed FOC/96 6057 (Ultra--High Resolution Studies of AGNs II:
3C279 Proper Motion)

       The Faint Object Camera (f/96) was used to make ultra-high
resolution observations of active galactic nuclei in radio galaxy 3C279 in
order to study the small scale morphology of the AGN.  The data will be
searched for evidence of superluminal motion, which is known radio
observations, and for time variable phenomena.  The observations were
executed as scheduled, and no anomalies were noted.

   1.6 Completed Two Sets of FOC/96 6349 (Snapshot search for High Redshift
QSOs with Far-UV Flux)

       The Faint Object Camera (f/96) was used to make snapshot images of
the quasi-stellar objects Q1358-135 and Q1213+093.  This is to determine if
these high redshifted objects have a far ultraviolet flux.  The
observations were executed as scheduled, and no anomalies were noted.

   1.7 Completed STIS/MA1/MA2/DUM 7090 (STIS25M - PSF Measurement in Bands
1 and 2)

       The Space Telescope Imaging Spectrograph (MA1 and MA2) were used to
make observations of LS749B in order to measure the instrument's point
spread function as seen by the MAMA detectors for wavelengths covering the
full range of detector sensitivity.  The FHST update just before this
proposal began (at 150/2106Z) failed, but he observations completed as
scheduled, and no anomalies or problems were reported.

   1.8 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.

   1.9 Completed Three Sets of 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 Bands 1 and 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.

   1.10 Completed STIS/CCD/MA2 7139 (UV Spectral Dating of Galaxies)

       The Space Telescope Imaging Spectrograph (CCD and MA2) were used to
make ultraviolet observations of the star HD107213 which is located in the
distant radio galaxy 53W091.  The rest frame of the ultraviolet spectrum of
this z=1.55 radio galaxy suggests a population of stars is at least 3.5 Gyr
old.  The observations were executed as planned, and no problems were
reported.

   1.11 Completed Two 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.

   1.12 Complete STIS/CCD 7151 (STIS CCD V2-V3 Aperture Verification)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the standard star GD153 in order to perform the V2-V3
aperture verification.  This calibration uses an isolated point source,
determines the position of the spectroscopic slit, and the position of the
target within the slit.  The observations were executed as scheduled, and
no anomalies were noted.

   1.13 Completed STIS/CCD 7070 (STIS CCD Coronographic Acquisition)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of star GD153 as part of a series of coronographic acquisition
calibration observations.  The goal of this proposal is to demonstrate the
ability of the STIS FSW to find an isolated point source with the CCD
detector and reposition the spacecraft to place the target under an
occulting bar in each of the supported STIS coronographic apertures.  The
observations were completed as planned, and no anomalies were reported.

   1.14 Completed Two Sets of STIS/CCD 7143 (Thermal Stability of CCDs in
the Presence of MAMA Low Voltage Cycling)

       The Space Telescope Imaging Spectrograph (CCD) was used to check the
thermal stability of the CCDs in the presence of low voltage cycling.  This
is to determine the CCD spectral and spatial shifts associated with thermal
variations due to cycling of the MAMA LVPSs.  A bias and a dark calibration
image were also taken.  The observations were completed as scheduled, and
no anomalies were reported.

   1.15 Completed STIS/MA1 7144 (STIS Thermal Stability Test of MAMAS Due
to MAMA LVPSS Cycling)

       The Space Telescope Imaging Spectrograph (MA1) was used to
determine the stability of the spectrograph to thermal variations in the
MAMA modes due to MAMA LVPS cycling.  A continuous wavecal series of
exposures were taken, interspersed with dark exposures, to gain insight on
background as a function of magnetic latitude.  The observations were
executed as scheduled, and no anomalies were noted.

   1.16 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.

   1.17 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 Two (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.

   1.18 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 3C371 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.

   1.19 Completed WF/PC-2 6677 (The Origin of the X-Ray Background: What
are the Faintest X-Ray Galaxies?)

       The WF/PC-2 was used to make observations of the galaxy GAL-133329
which is from the deepest optically identified (ROSAT) X-ray survey yet.
These images were taken to determine the morphologies of the remaining
systems which we cannot study from the ground to determine whether the
remaining non-QSO XRB might be explained by emission from interacting or
disturbed spirals.  The observations were completed as planned, and no
anomalies were reported.

   1.20 Completed WF/PC-2 6429 (Parallax, Proper Motion, and Spectral
Energy Distribution of Isolated Neutron Stars)

       The WF/PC-2 was used to make observations of object HD169515 in
order to look for and study old neutron stars, their parallax, proper
motion, and spectral distribution.  The observations were completed as
planned, and no problems were reported.

   1.21 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-6153
in order to search for companions to its nuclei.  The observations were
executed as scheduled, and no anomalies were noted.

   1.22 Completed WF/PC-2 6887 (A Photometric Search for Faint Companions
to Nearby Stars)

       The WF/PC-2 was used to make a photometric search observations of
the nearby stars HD128620 and HD128621 in order to look for possible
companions.  The technique involves use of the Planetary Camera with wide
band pass filters to photometrically measure for the presence of resolved
dark companions.  The observations were executed as scheduled, and no
anomalies were noted.

   1.23 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 to check transmissions of all filters and filtered
slits.  The observations were executed as scheduled, and no anomalies were
noted.

   1.24 Completed WF/PC-2 6357 (The Nuclear Morphology of Elliptical Galaxies)

       The WF/PC-2 was used to make images of the early type, large,
elliptical galaxy NGC-2549 (taken form a list of 150 galaxies) in order to
study its nuclear morphology.  This survey will complement Illingworth's
snapshot study of later Hubble types.  The observations were completed as
scheduled, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 25
                                        Successful : 25
                          Scheduled Reacquisitions : 11
                                        Successful : 11

   2.2 FHST Updates:

                              Scheduled : 47
                             Successful : 46

       The update scheduled at 150/2106Z failed.

   2.3 Operations Notes:

       The observations described in 1.10 were part an Early Release
Observation.  There were no problems reported during the proposal or during
the trqnsmission of data to the ground.

       The Battery #3 Capacity Check was completed at 150/2043Z.  Analysis
of data gathered during the test will be provided later.

       Command and NCC functions are being controlled using PRS 11.2, which
was uneventfully checked out over the weekend, beginning at 150/0000Z.  No
problems with the new system have been noted.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science and SMOV operations.

/DMH