HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2157

PERIOD COVERED:  0000Z (UTC) 07/01/98 - 0000Z (UTC) 07/02/98

Daily Status Report as of 183/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Three Sets of WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental
Darks pt2/3)

       The WF/PC-2 was used to make a series of Cycle 7 supplemental
calibration darks.  This dark calibration program obtains three dark frames
every day to provide data for monitoring and characterizing the evolution
of hot pixels.  The observations were executed as scheduled, and no
anomalies were noted.

   1.2 Completed Two Sets of STIS/CCD 7948 (CCD Dark and Bias Monitor --
Cont. to Dec. 98)

       The Space Telescope Imaging Spectrograph (CCD) was used to measure
CCD dark current and bias rates for the 2 supported amplifier settings
{GAIN=1 and GAIN=4} in order to gather data for making superdarks and
superbiases.  The data will be used to track the growth of hot pixels on
the CCD in general and within the various target acquisition apertures
specifically.  The observations were executed as scheduled, and no
anomalies were noted.

   1.3 Completed NIC/2 7182 (Near-Infrared Spectral Reflectivity of Proteus)

       The Near Infrared Camera (Camera Two) was used to make observations
of the planet Neptune's moon Proteus.  Voyager provided no information on
the spectral reflectivities of the small dark inner satellites that it
discovered around Neptune.  These objects are too faint and too close to
their respective planets to be well measured from the ground.  The
observations were executed as scheduled, and no anomalies were noted.

   1.4 Completed Two Sets of NIC/1/2/3 7216 (Near-Infrared Observations of
NGC-6611 {M-16})

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the nebula NGC-6611 (a.k.a., M-16).  The NICMOS should
be able to extend the IMF statistics well into the subsolar-mass range and
examine many of the EGGs {i.e., Evaporating Gas Globules} seen in WF/PC-2
images.  The observations were completed as planned, and no problems were
reported.

   1.5 Completed Two Sets of NIC/1/2/3 7896 (A NIR Snapshot Survey of
Ultraluminous IR Galaxies)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make snapshot survey observations of the ultraluminous infrared galaxies
IR20414-16 and QDOTULIR20.  Nearly all of these galaxies show evidence for
a recent tidal interaction, and we will search for evidence of the merger
progenitors near the center of each galaxy, a task made significantly
easier with NIR imaging.  As described in HSTAR 6564 and in 2.1, the
acquisition for the second iteration of this proposal failed and the take
data flag remained down.  Otherwisw, the observations were completed as
planned, and no further anomalies were noted.

   1.6 Completed NIC/1 7861 (A Search for Extrasolar Giant Planets in the
Nearby TW Hya Association)

       The Near Infrared Camera (Camera One) was used to search for
extrasolar giant planets on the nearby HEN3-600  (a.k.a., TW Hya).  One of
the primary goals of NASA's mission is the identification of formed and
nascent planetary systems.  The observations were executed as scheduled,
and no anomalies were noted.

   1.7 Completed Two Sets of WF/PC-2 6938 (PSF Characterization)

       The WF/PC-2 was used to make point-spread-function (PSF) calibration
observations using the large globular cluster Omega Cen.  This is to
provide a subsampled PSF over the full field to allow PSF fitting
photometry, test PSF subtraction as well as dithering techniques {cf.
effects of the OTA breathing and CCD gain}.  The observations were executed
as scheduled, and no anomalies were noted.

   1.8 Completed NIC/1 7847 (Near-IR Photometry of Candidate Companion to
Proxima Centauri)

       The Near Infrared Camera (Camera One) was used to make observations
of star GL905 (a.k.a., Prox-Cen).  This is to help study the star Proxima
Centtauri which may have a low luminosity companion.  The observations were
completed as planned, and no anomalies were reported.

   1.9 Completed WF/PC-2 7909 (POMS Test Proposal: WF II Parallel Archive
Proposal)

       The WF/PC-2 was used to make parallel observations as part of the
POMS test proposal.  This test proposal is designed to simulate scientific
plans.  The observations were completed as planned, and no problems were
reported.

   1.10 Completed STIS/CCD 7910 (STIS Extragalactic Parallel Survey)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
extragalactic slitless spectrographic observations as part of the parallel
high galactic latitude survey to search for emission line galaxies.  Data
was taken in parallel, and not subject to proprietary time.  The
observations were executed as scheduled, and no anomalies were noted.

   1.11 Completed NIC/2 7227 (A Search for Low Mass/Sub-Luminous Companions
to M-Stars)

       The Near Infrared Camera (Camera Two) was used to make a search for
low mass/sub-luminous companions to the low mass M class star TVLM513-46.
Knowledge of stellar and sub-stellar masses and luminosities at and below
the ~0.08 M{sun} H-burning limit is of fundamental importance.  A dark
calibration image was also taken.  The observations were completed as
planned, and no problems were reported.

   1.12 Completed Five Sets of STIS/CCD 7908 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
calibration observations as part of the POMS Test Proposal.  This was a
STIS non-scripted parallel proposal.  The observations were completed as
planned, and no problems were reported.

   1.13 Completed NIC/2 7183 (Near-Infrared Spectral Reflectivity of Puck)

       The Near Infrared Camera (Camera Two) was used to make observations
of the reflectivity of Uranus' moon Puck.  Voyager provided no information
on the spectral reflectivities of the small, dark, inner satellites that it
discovered around Uranus. These objects are too faint and too close to
their respective planets to be well measured from the ground.  The
observations were completed as planned, and no problems were reported.

   1.14 Completed Four Sets of NIC/1 7866 (Multi-Wavelength Monitoring of
the M-87 Jet)

       The Near Infrared Camera (Camera One) was used to make
multi-wavelength observations of the jet in Galaxy M-87.  Monitoring
programs have reveals striking evolution in the jet structure over a 2 year
period.  The observations were executed as scheduled, and no anomalies were
noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 13
                                        Successful : 12

       HSTAR 6565 documents an acquisition at 181/151052Z that defaulted to
fine lock on FGS-1 only when FGS-3 suffered a walkdown failure.  Two
proposals which were described in yesterday's report, the sixth iteration
of STIS 7908 (POMS Test Proposal: STIS Non-Scripted Parallel Proposal) and
NICMOS 7226 (Search for Massive Jupiters), may have been affected.

       HSTAR 6564 describes a guide star acquisition failure at 182/181954Z
that occurred when FGS-1 suffered a walkdown failure and did not achieve
fine lock.  The proposal described in 1.5 was affected.

                          Scheduled Reacquisitions : 3
                                        Successful : 3

   2.2 FHST Updates:

                              Scheduled : 25
                             Successful : 25

   2.3 Operations Notes:

       The SSR EDAC error counter was cleared three times per ROP SR-1.

       A TTR was written for a period of no GCMR capability at 182/1701Z
when an NCC system change-over occurred.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH