HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2386

PERIOD COVERED:  0000Z (UTC) 06/03/99 - 0000Z (UTC) 06/04/99

Daily Status Report as of 155/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Two Sets of WF/PC-2 7621 (WF/PC-2 Cycle 7 Supplemental
Darks PT1/3)

       The WF/PC-2 was used to make supplemental dark calibration images.
This set of calibrations is intended to obtain 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 STIS/CCD/MA1/MA2 7673 (STIS MAMA Sensitivity and Focus
Monitor)

       The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to
make observations of standard star GRW+70D582 in order to perform a MAMA
sensitivity and focus monitoring program.  This is to monitor sensitivity
of each MAMA grating mode to detect any change due to contamination or
other causes.  A wavelength calibration image was also taken.  The
observations were executed as scheduled, and no anomalies were noted.

   1.3 Completed WF/PC-2 8053 (WF/PC-2 Cycle-7 Earth Flats -- Part II)

       The WF/PC-2 was used to take Earth flat calibration images.  This
proposal obtains sequences of Earth streak flats to construct high quality
flat fields for the WF/PC-2 filter set.  The observations were executed as
scheduled, and no anomalies were noted.

   1.4 Completed STIS/MA1 7298 (A Snapshot Survey for UV Bright Quasars at
Redshift Below 3)

       The Space Telescope Imaging Spectrograph (MA1) was used to make
ultraviolet snapshot observations of the bright quasar SBS1233+59 which has
a redshift (Z) below 3.0.  The goal is to find quasars bright enough in the
ultraviolet for spectroscopic follow-up in the range of 900-1200 Angstroms.
A wave length calibration image was also taken.  The observation were
completed as scheduled, and no anomalies were reported.

   1.5 Completed WF/PC-2 7622 (WF/PC-2 Cycle 7 Internal Monitor)

       The WF/PC-2 was used to make a set of Cycle 7 internal monitoring
calibration measurements.  A variety of internal exposures are obtained in
order to provide a monitor of the integrity of the CCD camera electronics
in both bays {gain 7 and gain 15}, a test for quantum efficiency in the
CCDs, and a monitor for possible buildup of contaminants on the CCD
windows.  A bias calibration and an internal flat calibration image were
also taken.  The observations were executed as scheduled, and no anomalies
were noted.

   1.6 Completed STIS/CCD/WF/PC-2 7388 (Black Holes and the Centers of
Galaxies)

       The Space Telescope Imaging Spectrograph (CCD) and the WF/PC-2 were
used to continue our survey of centers of nearby galaxies.  The major goal
is to survey an unbiased set of galaxies with a potentially wide range of
black hole masses.  The sample has been carefully chosen to optimize
leverage on the character of a proposed correlation of black hole mass with
galaxy mass.  A wavelength calibration image and a CCD flat were also
taken.  As described in yesterday's report and HSTAR 7156, the acquisiiton
for this proposal defaulted to fine lock back-up on one FGS only.
Otherwise, the observations were completed as scheduled with no further
anomalies.

   1.7 Completed Five Sets of WF/PC-2 8090 (POMS Test Proposal: WF-II
Parallel Archive Proposal Continuation)

       The WF/PC-2 was used in the parallel mode to make some low galactic
latitude archive observations.  The program will be used to take parallel
images of random areas of the sky.  As described in yesterday's report and
HSTAR 7156, the acquisiiton for the first iteration of this proposal
defaulted to fine lock back-up on one FGS only.  Otherwise, the
observations were executed as scheduled, and no further anomalies were
noted.

   1.8 Completed STIS/CCD 7672 (STIS CCD Sensitivity Monitor)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard star AGK+81D266 in order to monitor the
sensitivity of each CCD grating mode to detect any change due to
contamination or other causes.  A wavelength calibration image was also
taken.  The observations were completed as scheduled, and no anomalies were
noted.

   1.9 Completed Two Sets of STIS/CCD 7949 (CCD Dark and Bias Monitor --
Cont. to June 99)

       The Space Telescope Imaging Spectrograph (CCD) was used to conduct a
CCD dark calibration and a bias monitoring program.  It was also scheduled
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.

   1.10 Completed WF/PC-2 6355 (A UV Atlas of Nearby Galaxies)

       The WF/PC-2 was used to make ultraviolet observations of the nearby
galaxy NGC-4636.  The aim of the project is to build a reference
ultraviolet atlas of galaxies whose optical images are well known, with the
highest possible degree of information, covering all the morphological
types and luminosity classes.  The observations were executed as scheduled,
and no anomalies were noted.

   1.11 Completed WF/PC-2 6354 (Measuring Luminosity Evolution in Z = 0.3
Field Galaxies)

       The WF/PC-2 was used to make snapshot observations of the galactic
cluster Gal-Cluster-0127 located at a distance of Z = 0.3.  The targets
were drawn from a much larger pool of galaxies for which the internal
kinematics have been measured from an extensive ground based program.  The
observations were executed as scheduled, and no anomalies were noted.

   1.12 Completed Five Sets of STIS/CCD 8406 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation V)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude observations taken in parallel with the prime science
observations as part of a POMS proposal.  This is a STIS non-scripted
parallel Condition V proposal.  The observations were completed as
scheduled, and no anomalies were reported.

   1.13 Completed Four Sets of FGS 8102 (FGS Astrometry of the Extrasolar
Planet of GL876)

       The Fine Guidance Sensors were used to make astrometric observations
of the extrasolar planet GL876-3-RE which is orbiting a M4 class dwarf
star.  This will help determine the planet's mass.  The observations were
completed as planned, and no problems were reported.

   1.14 Completed STIS/CCD/MA2 8342 (Abundances in Halo Stars and Galactic
Element Formation)

       The Space Telescope Imaging Spectrograph (MA1 and CCD) was used to
make observations of star HD186478 as part of a study of the abundances in
halo stars and galactic element formation.  The results for the very oldest
Galactic stars will also provide an important, and independent, age
determination for the Galaxy and hence constrain cosmological age
estimates.  A wavelength calibration image was also taken.  The
observations were executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 10
                                        Successful : 10

                          Scheduled Reacquisitions : 5
                                        Successful : 5

   2.2 FHST Updates:

                              Scheduled : 22
                             Successful : 22

   2.3 Operations Notes:

       Using ROP SR -1, the SSR EDAC error counter was cleared once.

       The minimum bus voltage safemode test was disabled at 154/1803Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Continuation of normal science observations and calibrations.

/DMH