HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1899

PERIOD COVERED:  0000Z (UTC) 06/13/97 - 0000Z (UTC) 06/16/97

Daily Status Report as of 167/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of 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 galaxies NGC-315 and NGC-266.  This class of
"dwarf" Seyfert 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.

   1.2 Completed Five Sets of STIS/CCD 7675 (STIS Non-Scripted Parallel
Archive Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was used in the
parallel mode to obtain slitless spectroscopy with the G750L grism to
search for emission line galaxies at intermediate to high redshift.  The
observations were completed as planned, and no anomalies were reported.

   1.3 Completed Four Sets of NIC/1/2/3 7701 (NICMOS Short One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used as
part of a short NICMOS one orbit parallel program, to obtain "JHK" imaging
of sky regions when another instrument is prime.  The observations were
completed as scheduled, and no anomalies were reported.

   1.4 Completed NIC/1/2/3 7707 (NICMOS Multiaccum Dark Characterization 5/8)

       The Near Infrared Cameras (Camera One, Two and Three) was used to
obtain on-orbit darks for the MULTIACCUM predefined sequences requested by
Gos, before the start of Cycle 7.  The observations were executed as
scheduled, and no anomalies were noted.

   1.5 Completed Eighteen Sets of STIS/CCD 7700 (STIS Non-Scripted Parallel
Archive Proposal)

       The Space Telescope Imaging Telescope (CCD) was used to obtain
slitless spectroscopy with the G750L grism to search for emission line
galaxies at intermediate to high redshift.  Field galaxy surveys have shown
that at high redshift most galaxies have strong emission lines, and are
compact and blue.  This suggests that star formation rates were higher than
at present,and that AGN may have been more frequent.  The low background
and high resolution of HST separates these objects from the background.
The proposal completed as planned, and no problems were reported.

   1.6 Completed NIC/2 7498 (NICMOS Imaging Survey of Distant Radio
Galaxies. Ellipticals at Z > 2 ?)

       The Near Infrared Camera (Camera Two) was used to make high
resolution and high signal-to-noise ratio imaging survey observations of
the radio galaxy MRC1017-22.  The existence and photometric properties of
massive elliptical galaxies at high redshift provide a powerful probe of
galaxy evolution.  The observations were executed as scheduled, and no
anomalies were noted.

   1.7 Completed Two Sets of WF/PC-2 7203 (Cosmology with the Medium Deep
Survey - Short Orbit Cases)

       The WF/PC-2 was used to take short (about 20 minute) exposures, to
be taken in parallel with the prime science observations, using the I
filter.  These exposures are part of the medium-deep survey, which
emphasizes exposures that will be useful in obtaining cosmological
parameters.  The observations were completed as planned, and no problems
were reported.

   1.8 Completed Four 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.

   1.9 Completed WF/PC-2 6941 (WF/PC-2 Cycle 6 Astrometry Verification)

       The WF/PC-2 was used to make observations of the globular cluster
Omega Centauri in order to perform a Cycle 6 astrometry verification.  This
is to verify accuracy and stability of geometric transformation and
relative astrometry solutions.  The observations were completed as planned,
and no anomalies were reported.

   1.10 Completed Four 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.

1.11 Completed Four Sets of 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-6384 and NGC-628 far from their centers 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.

   1.12 Completed Eight Sets of WF/PC-2 6194 (WF/PC-2 Cycle 5: Polarization
Proposal)

       The WF/PC-2 was used to make polarization observations of star
BD+64D106 at for different spacecraft roll angles.  This should permit a
detailed and independent calibration of each polarizer quad.  The
observations were executed as scheduled, and no anomalies were noted.

   1.13 Completed STIS/CCD 7100 (STIS32C - SMOV Slit Transmission - CCD)

       The Space Telescope Imaging Spectrograph (CCD) as used to determine
the relative throughput vs. wavelength for a variety of commonly used slits
for the CCD modes.  The observations were completed as planned, and no
anomalies were reported.

   1.14 Completed Three Sets of 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.

   1.15 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-6239.  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.

   1.16 Completed STIS/MA1/MA2 7064 (STIS SMOV MAMA Contamination Monitor)

       The Space Telescope Imaging Spectrograph (MA1/MA2) was used to make
observations of the flux from standard star GRW+70D582 in order to monitor
for any gross changes over time that might indicate contamination.  The
observations were completed as planned, and no anomalies were reported.

   1.17 Completed WF/PC-2 6905 (WF/PC-2 Cycle 6 Calibration: Internal Monitor)

       The WF/PC-2 was used to make several internal calibration
observations including biases and internal flats as part of a Cycle 6
calibrations procedure.  A variety of internal exposures are run weekly to
verify and monitor the health of the camera.  The observations were
executed as scheduled, and no anomalies were noted.

   1.18 Completed WF/PC-2 6740 (Hyper-Luminous IRAS Galaxies: Star
Formation, AGN or LENSES?)

       The WF/PC-2 was used to make observations of the hyper-luminous IRAS
galaxy FSC142118 in order determine if its luminous state is a result to
its being a gravitational lens system or an active galactic nuclei (AGN)
system.  This IRAS galaxy is known to emit an enormous amount of power
(>10^13 LSUN) in the far infrared.  The observations were completed as
planned, and no anomalies were reported.

   1.19 Completed Fifteen Sets of NIC/1/2 7676 (NICMOS-One Orbit Parallel)

       The Near Infrared Camera (Cameras One and Two) was used to conduct
an on-orbit calibration procedure.  This was none in parallel with the
prime science observations . The procedure was completed as scheduled, and
no anomalies were noted.

   1.20 Completed STIS/MA1 7086 (STIS22MB STIS Slit to Detector Internal
Stability - MAMA - Part 2)

       The Space Telescope Imaging Spectrograph (MA1) was used to make slit
to detector internal stability calibration observations.  This was to
determine the stability of the spectrograph to thermal variations in the
MAMA modes.  A dark calibration image was also taken.  The observations
were executed as scheduled, and no anomalies were noted.

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

       The WF/PC-2 was used to make observations of early-type galaxies
NGC-3610 and NGC-3640 in order to study their nuclear core region and their
possible black holes.  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.

   1.22 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 SN1997A3 in
order to measure the Q0 parameter.  This is 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.

   1.23 Completed Two Sets of WF/PC-2 6105 (Primary Distance Measurement to
the Virgo Cluster)

       The WF/PC-2 was used to make observations of galaxy VCC1104 which is
located in the Virgo galactic cluster in order to improve the known
distance to the cluster.  Because of its high intrinsic precision, reliance
on basic stellar physics, and independence from the current collection of
secondary distance estimators, the resulting Virgo distance will be the
most nearly definitive to date, providing a stepping stone to more remote
clusters.  The observations were completed as planned, and no anomalies
were reported.

   1.24 Completed STIS/MA2 7082 (Repeatability of Image Positioning for
STIS MAMA Modes (STIS-20M))

       The Space Telescope Imaging Spectrograph (MA2) was used to make a
series of observations to test repeatability of image positioning in the
MAMA Mode.  The test for repeatability of the MSM was done by taking a
sequence of comparison lamp spectra with grating G230M over the full range
of tilt.  This test is performed in conjunction with proposal 7081.  The
test was completed as scheduled, and no anomalies were reported.

   1.25 Completed WF/PC-2 6699 (The Globular Cluster System of the Dwarf
Elliptical System Galaxies NGC-185 and NGC 205)

       The WF/PC-2 was used to make observations of the globular cluster
system around the nucleus of dwarf galaxy NGC-205.  The propose is to
carryout a general reconnaissance of the properties of the globular
clusters.  The observations were completed as planned, and no anomalies
were reported.

   1.26 Completed Eleven Sets of STIS/CCD 7600 (STIS CCD Performance Monitor)

       The Space Telescope Imaging Telescope (CCD) was used to measure the
baseline performance and commandability of the CCD subsystem.  Only primary
amplifier D is used.  Bias, dark, and flat field exposures are taken in
order to measure read noise, dark current, CTE, and gain.  Numerous bias
frames are also taken to permit construction of "superbias" frames in which
the effects of read noise have been rendered negligible.  Dark exposures
are made outside the SAA.  The observations completed normally, and no
anomalies were reported.

   1.27 Completed FGS 6538 (The Distances to Dwarf Novae, and the
Calibration of the Technique of Infrared Spectroscopic Parallax)

       The FGSs were used to make astrometric observations of the Dwarf
Novae SS-Cyg and several other reference stars in order to measure its
distance from its parallax.  The distances to this dwarf novae is poorly
known. This deficiency severely impacts our ability to quantify the
energetics of the various processes taking place in dwarf novae systems.
The observations were executed as scheduled, and no anomalies were noted.

   1.28 Completed FGS 6884 (1.19 Completed FGS 6884 (Companion to W922)

       The FGSs were used to make astrometric parallax observations of the
binary star W922 in order to study its faint companion star.  These data
will be used to measure the barycentric orbits, and accurate masses of this
star and it low mass companion.  Astrometric observations were also made of
several other nearby reference stars.  The observations were completed as
scheduled, and no problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 23
                                        Successful : 23

                          Scheduled Reacquisitions : 21
                                        Successful : 21

   2.2 FHST Updates:

                              Scheduled : 42
                             Successful : 42

   2.3 Operations Notes:

       The Battery # 4 capacity check was completed at 164/1845Z, when the
battery was brought back on-line.

       SSR interrupt logs were dumped at 164/1716Z, 165/1331Z, and 166/1258Z.

       A NSSC-1 status buffer dump was performed at 165/1253Z.  A full
DF-224 memory dump was performed at 166/0200Z.

       Throughout the weekend, the gimbal temperatures have been closely
monitored for possible limit violations due to the current sun exposure.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science and SMOV operations.

/DMH