HUBBLE SPACE TELESCOPE

   DAILY REPORT #2547

PERIOD COVERED:  0000Z (UTC) 01/26/00 - 0000Z (UTC) 01/27/00

Daily Status Report as of 027/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed WF/PC-2 8460 (Cycle 8 Supplemental Darks pt2/3)

        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 completed with no reported problems.

    1.2 Completed STIS/CCD/MA1 8482 (Observations of a Brown Dwarf)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
investigate brown dwarfs which are degenerate stars with masses smaller 
than 0.08 M_sun that do not burn hydrogen except when very young.  There 
are now about a dozen good candidates based on near infrared photometry and 
low resolution spectroscopy, but a large number of brown dwarfs are being 
discovered daily by the DENIS and 2MASS surveys.  The observations 
completed with no reported anomalies.

    1.3 Completed WF/PC-2 8345 (Multipolar Bubbles and Jets in Very Low 
Excitation Planetary Nebulae - A WF/PC-2 H-Alpha Imaging Survey)

        The WF/PC-2 was used to make H-Alpha observations of the very low 
excitation planetary nebula PK133-08D1 in order to study its multipolar 
bubbles and jets.  Comparison of the morphology of this young PNe sample 
with more evolved PNe populations will set new constraints on models for 
the production of jet-like outflows and nebular evolution.  The 
observations were completed as planned, and no problems were reported.

    1.4 Completed 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.

    1.5 Completed WF/PC-2 8222 (An Emission Line Survey of the Crab Nebula)

        The WF/PC-2 was used to conduct an emission line survey of the Crab 
Nebula (a.k.a., M-1) in the light of emission from O I, S II, and O III, 
and in a single continuum band.  In addition to our specific scientific 
objectives, this survey will provide a data set that is essential to all 
future studies of the structure, dynamics, and evolution of the Crab.  The 
observations were executed as scheduled, and no anomalies were reported.

    1.6 Completed Three Sets of 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.

    1.7 Completed WF/PC-2 8268 (Lensed Quasar Hosts at High Redshift)