HUBBLE SPACE TELESCOPE

       DAILY REPORT #2496

PERIOD COVERED:  0000Z (UTC) 11/08/99 - 0000Z (UTC) 11/09/99

Daily Status Report as of 313/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed Three Sets of WF/PC-2 8443 (WF/PC-2 Cycle-8 Supplemental 
Darks pt1/3)

        The WF/PC-2 was used to obtain 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 problems were 
reported.

    1.2 Completed STIS/CCD 8409 (CCD Bias Monitor C8)

        The Space Telescope Imaging Spectrograph (CCD) was used to monitor 
the bias in the 1x1, 1x2, 2x1, and 2x2 bin settings at gain=1, and 1x1 at 
gain = 4 in order to build up high-S/N superbiases and track the evolution 
of hot columns.  The observations completed with no problems.

    1.3 Completed Two Sets of STIS/CCD 8408 (STIS CCD Dark Monitor C8)

        The Space Telescope Imaging Spectrograph (CCD) was used to make a 
CCD bias calibration observation.  This is to monitor the darks for the 
STIS CCD.  The observations were executed as scheduled, and no anomalies 
were reported.

    1.4 Completed WF/PC-2 8301 (A Snapshot Survey of X-ray Selected Central 
Cluster Galaxies)

        The WF/PC-2 was used to make snapshot survey observations of the 
x-ray, central cluster galaxy A401.  Central cluster galaxies are the most 
massive stellar systems known and have been used as standard candles for 
many decades.  The observations were executed as scheduled, and no 
anomalies were noted.

    1.5 Completed WF/PC-2/STIS/CCD 7419 (The Low Stellar Luminosity 
Function in Dwarf Spheroidal Galaxies)

        The WF/PC-1 and the Space Telescope Imaging Spectrograph (CCD) were 
used to observe the dSph satellite galaxies of the Milky Way which provide 
the nearest, and best studied, examples of dark-matter dominated systems. 
They have stellar velocity dispersions well in excess of those consistent 
with their mass being predominantly in a stellar mass function at all like 
that of the solar neighborhood, or of the Galactic globular clusters.  The 
observations completed nominally.


    1.6 Completed WF/PC-2 8307 (Morphology of High Radio Surface Brightness 
Planetary Nebulae)

        The WF/PC-2 was used to make observations of the high radio surface 
of the planetary nebula PK019-05D1.  The morphological transformation from 
the spherically symmetric circumstellar envelopes of AGB stars to the 
complex, bipolar structures of planetary nebulae has remained one of the 
major unresolved problems in the late stages of stellar evolution.  The 
observations were completed as planned, and no problems were reported.

    1.7 Completed Three Sets of STIS/CCD 8549 (POMS Test Proposal: STIS 
Non-scripted Parallel Proposal Continuation III)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
high galactic latitude observations as part of a non-scripted POMS Test 
Proposal. The observations were completed as scheduled, and no problems 
were reported.

    1.8 Completed Two Sets of STIS/CCD 8545 (POMS Test Proposal: STIS 
non-scripted parallel proposal continuation VI)

        The Space Telescope Imaging Spectrograph (CCD) was used to make low 
galactic latitude, non-scripted parallel observations as part of a POMS 
test proposal.  The observations were completed as planned, and no 
anomalies were reported.

    1.9 Completed WF/PC-2 8199 (Local Cosmology: The Nearby Flow Field and 
its Structure)

        The WF/PC-2 was used to make observations of the galaxy NGC6503 in 
order to study its nearby flow field and structure.  Very little data are 
available to constrain the velocity field of galaxies in the local 
neighborhood {<= 500 km/sec}.  The observations were executed as scheduled, 
and no anomalies were noted

    1.10 Completed WF/PC-2 8259 (The Origin of Blue Wings on NLR Line Profiles)

        The WF/PC-2 was used to attempt understanding the kinematics of the 
Narrow Line Region {NLR} in Seyfert galaxies.  The observational signature 
being looked for is the famous `blue wing' found on the OIIILambda5007 
lines of almost all Seyfert galaxies.  The proposal completed with no 
reported problems.

    1.11 Completed WF/PC-2/STIS/MA1 8044 (UV Spectroscopy of Chimneys in 
Edge-on Galaxies)

        The WF/PC-2 and the Space Telescope Imaging Spectrograph (MA1) were 
used to better understand our Galactic halo through observations of other 
galaxies. NGC 891 is well suited for this purpose, because it is edge-on. 
The long spectrograph slit can be placed perpendicular to the galaxy plane 
to provide information on the chemical composition and excitation with 
height above the plane.  The observations were successfully completed.

    1.12 Completed Two Sets of WF/PC-2 8442 (WF/PC-2 Cycle 8 Standard Darks)

        The WF/PC-2 was used to make a series of Cycle 8 standard dark 
calibration observations.  This dark calibration program obtains dark 
frames every week in order to provide data for the ongoing calibration of 
the CCD dark current rate, and to monitor and characterize the evolution of 
hot pixels.  The observations were executed as scheduled, and no anomalies 
were noted.

    1.13 Completed STIS/MA1 8426 (Cycle 8 MAMA Dark Measurements)

        The Space Telescope Imaging Spectrograph (MA1) was used to make a 
routine Cycle-8 MAMA dark noise calibration measurement.  This proposal 
will provide the primary means of checking on the health of the MAMA 
detectors.  This is done through frequent monitoring of the background 
count rate.  The observations were completed as planned, and no problems 
were reported.

    1.14 Completed STIS/CCD/MA1 8241 (A Snapshot Survey of Interstellar 
Absorption Lines)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
make high resolution Echelle spectrographic observations of the standard 
ultraviolet star HD1383 as part of a snapshot survey of interstellar 
absorption lines.  A wavelength calibration image was also taken.  The 
observations were executed as scheduled, and no anomalies were noted.

    1.15 Completed STIS/MA1 8424 (MAMA Sensitivity and Focus Monitor C8)

        The Space Telescope Imaging Spectrograph (MA1) was used to make 
observations of object AGK+81D266 in order to measure the sensitivity and 
to focus monitor C8.  This also is to monitor sensitivity of each MAMA 
grating mode to detect any change due to contamination or other causes, and 
to monitor the STIS focus in a spectroscopic mode.  A wavelength 
calibration was also taken.  The observations were completed as planned, 
and no anomalies were reported.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions:  8
Successful:  8

  Scheduled Re-acquisitions:  8
Successful:  8

    2.2 FHST Updates:
Scheduled: 21
Successful: 21

    2.3 Operations Notes:

        Upon the conclusion of JIS #6 (Rendezvous/Capture), the flight 
operations team returned to the STOCC area at 313/0125Z, remaining on the 
CCS "G" string.  At 313/0545Z, operations transferred to the CCS "A" string.

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

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW