HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2135

PERIOD COVERED:  0000Z (UTC) 06/01/98 - 0000Z (UTC) 06/02/98

Daily Status Report as of 153/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed NIC/1/2/3 7226 (Search for Massive Jupiters)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make a corographic search for massive planets around the nearby, young main
sequence star RE1147+12.  Because of the extreme youth of this object, any
low-mass brown dwarf and planetary companions will still be in a higher
luminosity phase and thus easily detectable.  A dark calibration image was
also taken.  The observations were executed as scheduled, and no anomalies
were noted.

   1.2 Completed Two 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.

   1.3 Completed STIS/CCD 7926 (CCD Dark and Bias Monitor -- Continued)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
several dark and bias calibration observations.  This is to measure CCD
dark current and bias rates for the two supported amplifier settings {gain
= 1 and gain = 4} in order to gather data for making superdarks and
superbiases.  These observations will also 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.

   1.4 Completed NIC/1/2 7849 (Metallicity and the Cepheid Distance Scale)

       The Near Infrared Camera (Cameras One and Two) was used to make
observations of Cepheid variable stars in the IC4182B galaxy.  The local
distance scale to galaxies is largely based on the Cepheid
period-luminosity relation.  Motivated by the goal of measuring an accurate
value of the Hubble constant, HST has been used successfully to discover
scores of Cepheid variables in each of about 20 galaxies.  The observations
were executed as scheduled, and no anomalies were noted.

   1.5 Completed WF/PC-2 7623 (WF/PC-2 Cycle 7 Internal Flats)

       The WF/PC-2 was used to make a set of internal Cycle 7 calibration
flats which are designed to monitor the pixel to pixel flat field response
and the visflat lamp degradation, as well as detect any possible changes
due to contamination.  The calibration observations were completed as
planned, and no problems were reported.

   1.6 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.

   1.7 Completed STIS/CCD/WF/PC-2/NIC/1/2 7569 (The Nuclear Region of NGC-4151)

       The WF/PC-2, Space Telescope Imaging Spectrograph (CCD) and the Near
Infrared Camera (Cameras One and Two) were used to make observations of the
nuclear region of Seyfert galaxy NGC-4151 which will be studied in several
ways: 1) low-resolution spectra over the entire UV and visible range will
be obtained; 2) slitless spectra of strong emission lines at moderate
resolution and narrow-band WF/PC-2 images will be used to map the dynamics
of the regions; 3) Echelle spectra over the entire UV bandpass will be used
to study the intrinsic absorption in the nucleus; and 4) parallel imaging
will be performed of the outer galaxy and other galaxies or QSOs.  The
observations were completed as planned, and no problems were reported.

   1.8 Completed Two Sets of 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.

   1.9 Completed WF/PC-2 7505 (The Hubble Diagram for Distant Supernovae
Measuring Cosmic Deceleration and Global Curvature)

       The WF/PC-2 was used to make observations of Super Nova SN1998E in
order to produce a precise Hubble diagram from measuring cosmic
deceleration and global curvature.  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 completed as planned, and no anomalies were reported.

   1.10 Completed Two Sets of NIC/2/3 7907 (NICMOS Pure Parallel Winter 97-98)

       The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel spectrographic observations of sky regions when another
instrument is prime.  The observations were completed as planned, and no
anomalies were reported.

   1.11 Completed NIC/1/2 7690 (NICMOS Pointed Super Flats)

       The Near Infrared Camera (Cameras One and Two) was used to make
super flat field calibration observations.  The observations will be used
to build high signal/noise ratio NICMOS flat fields for the different
filters.  The observations were executed as scheduled, and no anomalies
were noted.

   1.12 Completed STIS/CCD 7639 (STIS CCD Imaging Sensitivity Monitor)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the globular cluster NGC-5139 (a.k.a., Omega Cen) in order
to monitor the CCD's sensitivity.  This proposal should give a check on the
long-term, full-field photometric stability of the instrument.  A bias
observations and a dark calibration image were also taken.  The
observations were executed as scheduled, and no anomalies were noted.

   1.13 Completed NIC/1/2 7864 (The Host Galaxies of Radio-Quiet High-
Redshift Quasars)

       The Near Infrared Camera (Cameras One and Two) was used to make
observations of the radio-quite, high red shifted quasar MZZ11408 and its
host galaxy.  The underlying causes of the rapid cosmological evolution of
the quasar population are a mystery around which are woven many different
strands of contemporary cosmology.  The observations were executed as
scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 8
                                        Successful : 8

                          Scheduled Reacquisitions : 8
                                        Successful : 8

   2.2 FHST Updates:

                              Scheduled : 20
                             Successful : 20

   2.3 Operations Notes:

       Due to the MCE-1 reset reported in yesterday's report, a status
buffer message was received at 152/1414Z which indicated that the MAMA-1
high voltage had not been allowed to ramp down since an event flag had not
been set nominally by the flight software.  HSTAR 6501 documents this event.

       The SSR EDAC error counter was cleared five times using ROP SR-1.

       The SSR science playback pointer was reset at 153/0217Z per ROP SR-3.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH