HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1894

PERIOD COVERED:  0000Z (UTC) 06/06/97 - 0000Z (UTC) 06/09/97

Daily Status Report as of 160/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed FOC/96 6893 (FOC Cycle #6 UV Throughput Monitoring)

       The Faint Object Camera (f/96) was used to make observations of
standard star BPM16724 in order to measure the camera's ultraviolet
throughput of the COSTAR plus the FOC combined.  The observations were
executed as scheduled and no anomalies were noted.

   1.2 Completed 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 Two 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 Three Sets of WF/PC-2 6903 (WF/PC-2 Cycle 6 Calibration:
Decontamination)

       The WF/PC-2 was used to make several calibration bias observations,
internal flats, K-Spot images and dark calibration images which are all
part of a Cycle 6 decontamination procedure.  No science was interleaved
with the dark exposures.  The observations were completed as scheduled, and
no problems were reported.

   1.5 Completed Two 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.

   1.6 Completed WF/PC-2 6358 (UV Imaging of Circumnuclear Starburst Rings)

       The WF/PC-2 was used to make ultraviolet snapshot observations of
galaxy NGC-3982 in order to study its circumnuclear starburst rings.  A
homogeneous database of properties of the star-forming region will be
generated.  The observations were executed as scheduled, and no anomalies
were noted.

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

       The WF/PC-2 was used to make observations of supernova SN1997A2 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.

   1.8 Completed Nineteen 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.  During
the seventh iteration of this proposal, at 158/161842Z and as documented in
HSTAR 6085, a guide star acquisition failed.  The take data flag remained
down.  Six observations were affected.  Otherwise, the remaining iterations
were completed as planned, and no further anomalies were reported.

   1.9 Completed Nineteen Sets of NIC/1/2/3 7676 (NICMOS-One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
conduct an on-orbit calibration procedure.  This was done in parallel with
the prime science observations.  During the seventh iteration of this
proposal, at 158/161842Z and as documented in HSTAR 6085, a guide star
acquisition failed.  The take data flag remained down.  Eight observations
were affected.  The procedure was completed as scheduled, and no anomalies
were noted.

   1.10 Completed Two 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.

   1.11 Completed Two Sets of WF/PC-2 6902 (WF/PC-2 Cycle 6 Photometric
Calibration Monitor UV/OPT STD)

       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.  These observations were done immediately before
and after decontamination procedures.  The observations were completed as
planned, and no problems were reported.

   1.12 Completed STIS/CCD 7073 (CCD Peakdowns For Coronagraphic Acquisition)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard object GD153 in order to calibration the peakdowns
needed for the coronagraph acquisition.  This is to demonstrate the ability
of the STIS flight software to place an isolated point source behind an
occulting element in both a spectroscopic slit and a coronagraphic
aperture.  The observations were completed as planned, and no anomalies
were reported.

   1.13 Completed WF/PC-2 6447 (Distant Comet Nucleus Sizes)

       The WF/PC-2 was used to make observations of Comet Cern in order to
study the size of the comet's nucleus.  This comet is part of a 10-year
ground-based program to search for physical and chemical differences
between the comet's first entering the inner Solar System and after it has
been thermally processed.  The observations were completed as planned, and
no anomalies were reported.

   1.14 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.

   1.15 Completed FOC/96 6426 (A Search for Multiple Images of QSOs Seen
Through Damped Lyman-Alpha Absorbers)

       The Faint Object Camera (f/96) was used to make observations of QSO
PG2112+059.  The propose of these observations is to obtain high-resolution
images of a sample of QSOs with strong damped Lyman-Alpha absorption in
their spectra.  The observations should determine whether these QSOs are
multiply imaged by gravitational lensing.  The observations were completed
as planned, and no problems were reported.

   1.16 Completed 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 object Q0420-388.  This is to determine if this high
redshifted object has a far ultraviolet flux.  The observations were
executed as scheduled, and no anomalies were noted.

   1.17 Completed FOC/96 6891 (Imaging and Polarization Studies of Radio
Galaxies and Jets)

       The Faint Object Camera (f/96) was used to make observations of
radio galaxy NGC-6251 to study optical emissions associated with its radio
hot spots.  The observations were executed as scheduled, and no anomalies
were noted.

   1.18 Completed FGS 6486 (Orbits of Pre-Main Sequence Binaries)

       The FGSs were used in the TRANS mode to make astrometric
observations of the pre-main sequence, binary star system HV-Tau in order
to help compute its orbital parameters.  The observations will be used to
make orbital maps of T-Tauri class stars.  From these orbital parameters
the proposers will be able to derive the first reliable mass measurements
for low mass pre-main sequence stars.  The observations were completed as
scheduled, and no anomalies were reported.

   1.19 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 these dwarf novae are 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.

   1.20 Completed Two Sets of WF/PC-2 6406 (Intermediate Mass Stars and
Unusual Stellar Mass Limits in a Starburst Galaxy)

       The WF/PC-2 was used to make observations of the intermediate mass
stars which are located in the starbursting galaxy IC10.  This dwarf
irregular galaxy is the nearest example of the global starburst phenomena.
As such, it offers a unique opportunity to test ideas about the star
formation process in such an environment.  Near the beginning of this
five-and-one-half proposal (at 158/161842Z), the guide star acquisiiton
failed and the take data flag remained down, affecting all 13 observations.
HSTAR 6085 was written.  During the second iteration, at 159/161131Z, the
guide star acquisition failed to guidance on FGS-1 only.  HSTAR 6086 was
written.  The observations were completed as scheduled, and no effects on
science were reported.

   1.21 Completed STIS/DUM/MA1 7137 (STIS Observation of UV High-Velocity
Interstellar Lines in the Carina Nebula)

       The Space Telescope Imaging Spectrograph (MA1/H Echelle
Spectrograph) was used to make ultraviolet observations of the high
velocity lines located in section CPD-59D260 of the Carina Nebula.  It is
expected that STIS will resolve many more velocity components than
previously observed in these intricate profiles.  The phenomenon is likely
due to interaction between the massive stellar winds and the surrounding
interstellar material, and it is probably related to the diffuse X-ray
emission from the region.  The observations were completed as planned, and
no anomalies were reported.

   1.22 Completed Two Sets of WF/PC-2 6685 (Globular Cluster Systems Along
the Hubble Sequence)

       The WF/PC-2 was used to make images of the globular cluster NGC-3628
in order to study the globular cluster systems along the Hubble sequence.
This proposal is studying six globular cluster systems which are located in
edge-on galaxies beyond the Local Group.  The observations were executed as
scheduled, and no anomalies were noted.

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

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of standard star P330E using each NICMOS camera at five
different wavelengths spanning the NICMOS wavelength range.  Biases and an
internal flat calibration image were also taken.  The observations were
completed as planned, and no problems were reported.

   1.24 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 GL22-5 in order to make
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.

   1.25 Completed WF/PC-2 6501 (Probing the Equatorial Ejecta of Eta Carinae)

       The WF/PC-2 was used to make observations of the equatorial ejecta
from Eta-Carinae.  The "homunculus", massive ejecta from Eta Carinae is one
of the most remarkable of all known bipolar objects.  Its large, ragged
equatorial debris-disk is particularly ill-understood, and we now suspect
that this structure is critical for understanding the instability that
caused Eta's Giant Eruption.  The observations were executed as scheduled,
and no anomalies were noted.

   1.26 Completed WF/PC-2 6362 (Supernova Host Galaxy)

       The WF/PC-2 was used to make observations of the supernova host
galaxy GAL-122853.  The observations were executed as scheduled, and no
anomalies were noted.

   1.27 Completed Two Sets of NIC/3 7611 (NICMOS Parallel Thermal
Background Test)

       The Near Infrared Camera (Camera Three) was used to make
observations of an object designated as Target-1 in order to conduct a
parallel thermal background test.  This test was conducted in order to
measurement of the stability of the HST thermal emission.  The observations
were executed as scheduled, and no anomalies were noted.

   1.28 Completed WF/PC-2 6943 (WF/PC-2 Cycle 6: Throughput Verification
for Narrow Band Filters)

       The WF/PC-2 was used to make observations of object NGC-7662 in
order verify the throughput for the narrow band filters.  This program will
provide direct verification of throughput of narrow band filters through
observations of emission line objects.  The observations were completed as
planned, and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 28
                                        Successful : 27

       There was a guide star acquisition failure at 158/161842Z.  HSTAR
6085 was written.  Proposals mentioned in 1.8, 1.9, and 1.20 were affected.

       One acquisition, at 159/161131Z, failed to fine lock one FGS-1 only.
HSTAR 6086 was written.

                          Scheduled Reacquisitions : 10
                                        Successful : 10

   2.2 FHST Updates:

                              Scheduled : 59
                             Successful : 59

   2.3 Operations Notes:

       The proposal detailed in 1.21 is an Early Release Observation.

       As described in HSTAR 6084, at 158/022120Z, Gyro #1 motor current
flagged low while guiding on FGS-1.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science and SMOV operations.

/DMH