HUBBLE SPACE TELESCOPE

                       DAILY REPORT #1910

PERIOD COVERED:  0000Z (UTC) 06/30/97 - 0000Z (UTC) 07/01/97

Daily Status Report as of 182/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed STIS/CCD 7125 (CCD Coronographic Imaging of the Disk of
Beta Pictoris)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
resolution coronographic imaging of the inner section of the edge-on disk
surrounding the star HD39060 (a.k.a., Beta Pictoris).  The observations
were completed as scheduled, and no anomalies were noted.

   1.2 Completed Four Sets of WF/PC-2 6904 (WF/PC-2 Cycle 6 Calibration: Darks)

       The WF/PC-2 was used to make a series of dark calibration images as
part of a standard calibration within Cycle 6.  This calibration procedure
is performed once per week as part of an on-going CCD calibration to be
used to monitor and characterize hot pixels.  The observations were
executed as scheduled, and no anomalies were noted.

   1.3 Completed NIC/3 7611 (NICMOS Parallel Thermal Background Test)

       The Near Infrared Camera (Camera Three) was used to make
observations of an object designated a 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.

   1.4 Completed STIS/CCD 7659 (Daily Darks to Update Acquisition Bad Pixel
Table)

       The Space Telescope Imaging Spectrograph (CCD) 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.

   1.5 Completed WF/PC-2 7450 (The Formation of Bulges of Spiral Galaxies:
Central Visual-Infrared Color Gradients)

       The WF/PC-2 was used to make observations of the bulge in spiral
galaxies NGC-5443 and NGC-5965 in order to obtain high-resolution optical
and near infrared images for a complete survey sample of bulges of spiral
galaxies.  The observations were completed as scheduled, and no anomalies
were reported.

   1.6 Completed Three 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.

   1.7 Completed Four Sets of NIC/1/2/3 7704 (NICMOS MULTIACCUM Dark
Characterization 2/8)

       The purpose of this proposal is to obtain group 2 of the on-orbit
darks for the MULTIACCUM predefined sequences requested by GOs, before the
start of Cycle 7.  As detailed in HSTAR 6106, at 181/034041z, the guide
star acquisition for this proposal defaulted to fine lock back-up on FGS-1
only.  Two observations hay have been affected.  The observations completed
with no further problems.

   1.8 Completed WF/PC-2 6526 (Distance, Proper Motion and Colors of the
Vela Pulsar.)

       The WF/PC-2 was used to make ultraviolet observations of the proper
motion and colors of the pulsar (STAR-0835) which is located in the Vela
Nebula.  This is the only isolated neutron star known to pulsate in the
optical domain.  Although the optical counterpart of the Vela Pulsar has
been identified since 1977, nothing is known about its ultraviolet emission
beyond a limited, ground based point in the U band.  The observations were
executed as scheduled, and no anomalies were noted.

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

   1.10 Completed WF/PC-2 6557 (WF/PC-2 Imaging of Intermediate Redshift
Absorption Selected Galaxies)

       The WF/PC-2 was used to make observations of the galaxy Q1254 where
a halo appears to be absorbing light from the background quasi-stellar
object (QSO).  The observations were completed as planned, and no problems
were reported.

   1.11 Completed Four Sets of NIC/1/2/3 7705 (NICMOS MULTIACCUM Dark
Characterization 3/8)

       The purpose of this proposal is to obtain group 3 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.

   1.12 Completed Four Sets of NIC/1/2/3 7706 (NICMOS MULTIACCUM Dark
Characterization 4/8)

       The purpose of this proposal is to obtain group 4 of the on-orbit
darks for the MULTIACCUM predefined sequences requested by GOs, before the
start of Cycle 7.  The final iteration of this proposal was affected by a
guide star acquisition failure midway through the proposal, at 181/222659Z.
As detailed in HSTAR 6107, the FGS-3 search radius limit was exceeded.
Otherwise, the observations completed with no further reported problems.

   1.13 Completed NIC/1/2/3 7710 (NICMOS MULTIACCUM Dark Characterization 8/8)

       The purpose of this proposal is to obtain group 8 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.

   1.14 Completed NIC/1/2/3 7709 (NICMOS MULTIACCUM Dark Characterization 7/8)

       The purpose of this proposal is to obtain group 7 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.

   1.15 Completed S/C/NIC/1/2/3 7608 (NICMOS Focus Monitoring)

       The Near Infrared Camera (Cameras One, Two, and Three) was used to
determine and monitor the optimal focus and tilt settings for all three
NICMOS cameras by making images of NGC-3603.  This proposal is built to run
NIC/1/2/3 sweeps on a 2-week basis.  The obserservations completed without
incident with no reported anomalies.

   1.16 Completed 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.  An Earth
Calibration image was also taken.  The observations were executed as
scheduled, and no anomalies were noted.

   1.17 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, whilst
producing many interesting new results, have yielded surprisingly little
hard information on the properties of the hosts themselves.  This imaging
study using the WF/PC-2 of object 0157+001 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 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.

   1.19 Completed 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.

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

       The Faint Object Camera (f/96) was used to make observations of QSO
PG1329+412.  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.

   1.21 Completed WF/PC-2 6253 (Pure Parallel Archive Program)

       The WF/PC-2 was used to execute a pure parallel program taking
ultraviolet observations running concurrently with prime science
observations.  The intent is to search for extra-galactic sources with flux
excesses at 3000 A0 and galactic sources with excesses at 1600 A0.  The
observations were completed as planned, and no problems were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 13
                                        Successful : 10

       As described in 1.7, one acquisition defaulted to control on one FGS
only.

       As further described in 1.17, there was an acquisition failure ar
181/222659Z.

       Two other acquistion failures, documented in HSTAR 6109, will be
further described in tomorrow's report since they occurred in day 182.

                          Scheduled Reacquisitions : 5
                                        Successful : 5

   2.2 FHST Updates:

                              Scheduled : 14
                             Successful : 14

   2.3 Operations Notes:

       The observation described in 1.1 is an Early Release Observation.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science and SMOV operations.

/DMH