HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1909

PERIOD COVERED:  0000Z (UTC) 06/27/97 - 0000Z (UTC) 06/30/97

Daily Status Report as of 181/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three Sets of STIS/CCD 7659 (Daily Darks to Update
Acquisition Bad Pixel Table)

       The Space Telescope Imaging Spectrograph was used to make dark
calibration images in order to update the acquisition bad pixel table.
Daily hot pixel lists can also be used for science data analysis.  The
observations were executed as scheduled, and no anomalies were noted.

   1.2 Completed Two Sets of NIC/1/2/3 7703 (NICMOS MULTIACCUM Dark
Characterization 1/8)

       The purpose of this proposal is to obtain group 1 of the on-orbit
darks for the MULTIACCUM predefined sequences requested by GOs, before the
start of Cycle 7.  The observations completed with no reported problems.

   1.3 Completed FOC/96 6570 (High-Redshift Galaxies and Their Contribution
to the Ionizing Background)

       The Faint Object Camera (f/96) was used to make ultraviolet
objective-prism spectroscopy observations of the high-redshifted galaxy
GAL-CFRS-1 in order to study its contribution to the ionization background,
to study its ultraviolet spectral energy distribution, from shortward of
the Lyman limit to longward of Lyman-Alpha.  The observations were executed
as scheduled, and no anomalies were noted.

   1.4 Completed Four 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 grating 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.

   1.5 Completed Ten 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 four 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.

   1.6 Completed 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.

   1.7 Completed Eighteen Sets of NIC/1/2/3 7729 (NICMOS Short One Orbit
Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
obtain "JHK" imaging of sky regions while another instrument was prime.
These observations were  part of the short NICMOS one orbit parallel
program.  The observations were executed as scheduled, and no anomalies
were noted.

   1.8 Completed Sixteen Sets of STIS/CCD 7727 (STIS Non-Scripted Parallel
Archive Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was used to obtain
parallel slitless spectroscopy with the G750L grating 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.  The observations were completed as planned, and no anomalies were
reported.

   1.9 Completed WF/PC-2 6906 (WF/PC-2 Cycle 6 Calibration: Internal
Monitor-Visual Flats)

       The WF/PC-2 was used to make internal calibration visual flat images
as part of the Cycle 6 internal monitoring of the instrument's operations.
This proposal defines the standard series of internal flat fields, which
will be executed twice per month.  The observations were completed as
planned, and no anomalies were reported.

   1.10 Completed WF/PC-2 6633 (Cusps or Cores in Barred Bulges?)

       The WF/PC-2 was used to make observations of the SB class (Barred)
galaxy NGC-1543 in order to study its nuclear bulge region and cusps.  This
is a highly tri-axial, tumbling, low-mass stellar systems.  The
observations were completed as planned, and no problems were reported.

   1.11 Completed Sixteen Sets of NIC/1/2/3 7726 (NICMOS One Orbit Parallel)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make a one orbit parallel calibration observations.  The observations were
executed as scheduled, and no anomalies were noted.

   1.12 Completed Nine 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 grating to
search for emission line galaxies at intermediate to high redshift.  The
observations were completed as planned, and no anomalies were reported.

   1.13 Completed Two 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-1398, far from the center, 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.

   1.14 Completed WF/PC-2 6452 (Global and Temporal Coverage of a
Atmospheric Regions of the Planet Jupiter)

       The WF/PC-2 was used to make observations of selected regions of the
planet Jupiter in order to investigate its atmospheric dynamics.  These
data will be used in the interpretations of the observations made from the
Galileo Mission.  The observations were executed as scheduled, and no
anomalies were noted.

   1.15 Completed Three Sets of NIC/2 7327 (Elliptical Galaxy Evolution at
High Redshift: IR Imaging of 60 Distant Clusters)

       The Near Infrared Camera (Camera Two) was used to make infrared
observations high redshifted elliptical galaxies in galactic clusters
CL1335+463 and CL1227+463.  By measuring the structural properties of high
redshift cluster elliptical galaxies, it is hoped to resolve the
controversy regarding the age and formation history of bright cluster
ellipticals.  The observations were executed as scheduled, and no anomalies
were noted.

   1.16 Completed Three Sets of WF/PC-2 6741 (Synoptic Monitoring of
Seasonal Phenomena on Mars)

       The WF/PC-2 was used to make observations of the planet Mars as part
of a program of synoptic monitoring of the planet's seasonal phenomena.
This is an especially important period because Mars Pathfinder and Mars
Global Surveyor will be in cruise phase during this time.  The observations
were executed as scheduled, and no anomalies were reported.

   1.17 Completed Two Sets of WF/PC-2 6776 (A Comparative HST Imaging Study
of Radio Galaxies and Hosts)

       A clear understanding of the nature of the host galaxies of
radio-quiet quasars (RQQs), radio-loud quasars (RLQs) and radio galaxies
(RGs) is of central importance in any attempt to unify and relate the three
main classes of powerful active galaxies.  Existing HST studies of quasar
hosts, while producing many interesting new results, have yielded
surprisingly little hard information on the properties of the hosts
themselves.  This imaging study of PHL909 and 2344+184 using the WF/PC-2
will remedy this situation by undertaking redder, line-free observations of
our three matched AGN samples.  The proposal completed with no reported
problems.

   1.18 Completed Five Sets of NIC/1/2/3 7708 (NICMOS MULTIACCUM Dark
Characterization 6/8)

       The purpose of this proposal is to obtain group 6 of the on-orbit
darks for the MULTIACCUM predefined sequences requested by GOs, before the
start of Cycle 7.  The observations completed with no reported problems.

   1.19 Completed 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.  This observations was done immediately before and
after decontamination procedures.  The observations were completed as
planned, and no problems were reported.

   1.20 Completed WF/PC-2 6419 (Testing Unified Models With a Complete
Sample of Seyfert Galaxies)

       The WF/PC-2 was used to make observations of the Seyfert galaxy
NGC-1386 to help build a complete survey of the Seyfert class of galaxies.
This will help test the current model for Seyfert class galaxies.  This
model proposes that all Seyferts have Seyfert-1 nucleus, which is
surrounded by a torus of gas and dust.  The observations were completed as
planned and no anomalies were noted.

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

       The WF/PC-2 was used to make photometric search observations of the
nearby star HD22049 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.

   1.22 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 PG1148+549 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.

   1.23 Completed Four Sets of NIC/1/2/3 7707 (NICMOS Multiaccum Dark
Characterization 5/8)

       The Near Infrared Camera (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.

   1.24 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.

   1.25 Completed Three 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.

   1.26 Completed WF/PC-2 7209 (Hubble Deep Field South)

       The WF/PC-2 was used to make a Hubble Deep Field South observation
near the star HD216489.  The propose of the deep imaging with the HST Wide
Field Camera 2 is to study the high-redshift distribution of galaxies in a
Southern field.  The observations were completed as planned, and no
anomalies were reported .

   1.27 Completed Two Sets of WF/PC-2 6836 (Light Curve of an Eclipsing
Millisecond Pulsar)

       The WF/PC-2 was used to make observations of the eclipsing
millisecond pulsar PSRJ2051-0 in order to obtain its light curve.  This
pulsar is an exciting new millisecond pulsar which is in a 2.38 hour
circular orbit about a 0.03 solar mass companion which eclipses the pulsed
radiation from the pulsar for 20 minutes each orbit.  The companion is only
the second eclipsing millisecond pulsar companion identified optically.
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-6833 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.

   1.29 Completed 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-7814in 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.

   1.30 Completed WF/PC-2 6776 (A Comparative HST Imaging Study of Radio
Galaxies and Hosts)

       A clear understanding of the nature of the host galaxies of
radio-quiet quasars, radio-loud quasars and radio galaxies is of central
importance in any attempt to unify and relate the three main classes of
powerful active galaxies.  Existing HST studies of quasar hosts, while
producing many interesting new results, have yielded surprisingly little
hard information on the properties of the hosts themselves.  This imaging
study of QSO 0244+194 using the WF/PC-2 will remedy this situation by
undertaking redder, line-free observations of our three matched AGN
samples.  The proposal completed with no reported problems.

   1.31 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-3982.  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.

   1.32 Completed WF/PC-2 6716 (The Pattern of Massive Star Formation in
Irregular and Amorphous Galaxies)

       The WF/PC-2 was used to make observations of the galaxy NGC-4214.
The objective is to obtain deep WF/PC-2 images in far-ultraviolet (~1700
A0),U , V, and I bandpasses of the stellar populations in four nearby
galaxies known from their observed far-ultraviolet luminosities to be
forming massive (OB) class stars.  The observations were completed as
planned, and no anomalies were reported.

   1.33 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.

   1.34 Completed Three Sets of WF/PC-2 6802 (Cosmology With the Medium
Deep Survey)

       The WF/PC-2 was used to make observations taken in parallel with the
prime science observations as part of the Medium Deep Sky Survey.  The
observations were executed as scheduled, and no problems were reported.

   1.35 Completed FGS 6641 (Continuation of Mass Ratio Determination for
Double Stars)

       The Fine Guidance Sensors were used in both the POS and TRANS modes
to make astrometric observations of the double star L722-22 in order to
determine the mass ratio of its two components.  This binary system
contains either a low-mass star or a brown dwarf.  The observations were
executed as scheduled, and no anomalies were noted.

   1.36 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 : 35
                                        Successful : 35

                          Scheduled Reacquisitions : 14
                                        Successful : 14

   2.2 FHST Updates:

                              Scheduled : 79
                             Successful : 77

       Two updates scheduled at 180/2311Z failed

   2.3 Operations Notes:

       There were no significant problems encountered over the weekend.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science and SMOV operations.

/DMH