HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2240

PERIOD COVERED:  0000Z (UTC) 10/29/98 - 0000Z (UTC) 10/30/98

Daily Status Report as of 303/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 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 two 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.

1.2 Completed Two Sets of WF/PC-2 7713 (WF/P-2 Cycle 7 Supplemental Darks
pt3/3)

       The WF/PC-2 was used to make supplemental dark calibration images.
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 completed as planned, and no anomalies were noted.

1.3 Completed Four Sets of NIC/1/2/3 7963 (Darks: Warming Up)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
monitor the detector dark current during the interval between the end of
science observations and the exhaustion of cryogen and subsequent warming
of the dewar to > 100K.  The observations were completed as planned, and no
anomalies were noted.

1.4 Completed WF/PC-2 7497 (WF/PC-2 Observations of Astrophysically
Important Visual Binaries)

       The WF/PC-2 was used to make observations of the visual binary
variable star system Procyon.  This system is a famous metal-deficient G
dwarf for which accurate masses will lead to the star's helium content with
cosmological implications.  The observations were completed as planned, and
no anomalies were reported.

1.5 Completed Three Sets of STIS/CCD 8084 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation II)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
non-scripted parallel high galactic latitude observations as part of POMS
test proposal.  The observations were executed as scheduled, and no
anomalies were noted.

1.6 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.

1.7 Completed Three Sets of NIC/2/3 8082 (NICMOS pure parallel Fall 98)

       The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel observations while another instrument is prime.  The
observations were executed as scheduled, and no anomalies were noted.

1.8 Completed Two Sets of NIC/1/2/3 7886 (NICMOS Snap Shot Survey of
Early-Type Galaxies)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the early-type galaxy NGC-1351 as part of a snap-shot
broad-band imaging survey.  Since almost all early-type galaxies harbor
dust, these images which are less sensitive to extinction and will provide
superior light profiles for dynamical studies of the cores of these
galaxies.  The observations were completed as scheduled, and no problems
were reported.

1.9 Completed WF/PC-2 6770 (Resolving the Nature of Nova Shells)

       The WF/PC-2 was used to make images of the post nova remnant HR-Del
in order to study its surrounding shells structure.  Past data has indicate
a strong correlation between nova speed class and the ellipticity of the
resulting remnants.  The observations were completed as scheduled, and no
problems were noted.

1.10 Completed STIS (CCD/MA1/MA2) 7346 (The Nature of the Bright 'Supersodt
X-ray Source' RX J 0019+21)

       The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to
obtain decisive information on the true nature of RX J 0019+21, a bright
"supersoft x-ray source".  Two sets of echelle spectra at the quadrature
phases of the binary orbit in order to determine the UV spectral energy
distribution, to separate stellar and interstellar components, to search
for information on the absorption of stellar or disk origin, to measure
LineHell1160 emission lines, and to search for other emission/absorption
lines.  The proposal completed with no reported problems.

1.11 Completed Three 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.  As detailed in HSTAR 6746 and 2.1, the acquisition for the final
iteration of this proposal failed at 302/192715Z after it had lost lock
several times.  The take data flag remained down, affecting all
observations in this iteration.  Otherwise, the observations were completed
as planned, and no further problems were reported.

1.12 Completed STIS/CCD 8071 (HDF-South Flanking Fields)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of the distant object SAO255267 as part of the HDF-South
flanking field study.  This program is designed to provide coverage around
the HDF-South field and to provide a deep optical images of the NICMOS
HDF-South field.  The images were completed as planned, and no problems
were reported.

1.13 Completed Three Sets of NIC/1/2/3 7963 (Darks: Warming Up)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
monitor the detector dark current during the interval between the end of
science observations and the exhaustion of cryogen and subsequent warming
of the dewar to > 100K.  The observations were completed as planned, and no
anomalies were noted.

1.14 Completed NIC/2 7226 (Search for Massive Jupiters)

       The Near Infrared Camera (Camera Two) was used to make a corographic
search for massive planets around nearby, young main sequence stars.
Because of the extreme youth of these objects, 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.

1.15 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-1161.  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.

1.16 Completed NIC/1/2/3 7899 (An IR Search For faint Companions to
Pleiades Very Low-Mass Stars and Brown Dwarfs)

       The Near Infrared Camera (Cameras One, Two and Three) was to be used
to make observations of CALAR3.  This is part of a infrared campaign to
search for faint companions to Pleiades very low-mass stars and brown
dwarfs.  The Pleiades has been the best site for brown dwarf {BD} searches,
with half of the presently "confirmed" BDs being Pleiades members.  As
detailed in HSTAR 6746 and 2.1, the acquisition for this proposal failed at
302/192715Z after it had lost lock several times.  The take data flag
remained down, affecting all observations.

2.0 FLIGHT OPERATIONS SUMMARY

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 9
                                        Successful : 8

       HSTAR 6746 describes a guide star acquisition failure occurring at
302/192715Z after several losses of lock.  The proposals described in 1.11
and 1.16 were affected.

                          Scheduled Reacquisitions : 7
                                        Successful : 7

   2.2 FHST Updates:

                              Scheduled : 23
                             Successful : 23

   2.3 Operations Notes:

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

       The STIS MCE-2 reset at 302/173700Z while in an SAA contour and
while the high voltage was off.  HSTAR 6745 was written.  ROP NS-12 was
executed to reset the STIS software error counter at 302/1825Z.  The STIS
MAMA-2 will be recovered at the time of the next high voltage turn on,
305/0747Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       The "burn-in" of new PDB 53.C will begin today and continue
throughout the weekend.  Installation of this data base is expected to
occur on Monday.

       Continuation of normal science observations and calibrations.

/DMH