HUBBLE SPACE TELESCOPE

   DAILY REPORT #2784

PERIOD COVERED:  0000Z (UTC) 01/10/01 - 0000Z (UTC) 01/11/01

Daily Status Report as of 011/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed STIS/CCD/MA2 8628 (High Density {~ 10^9 Cm^-3} Gas In The 
Jet Formation Region Of T Tauri Stars)

        The Space Telescope Imaging Spectrograph (CCD and MA2) was used to 
investigate the ubiquitous outflow that occurs during star formation for 
which the driving mechanism is still unknown.  The proposal intends to 
compare the kinematics of the UV line formation region with that of the 
optical forbidden lines and to determine the physical characteristics of 
the jet formation region.   There were no reported problems.

    1.2 Completed Two Sets of WF/PC-2 8827 (Cycle 9 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 proposal completed nominally.

    1.3 Completed WF/PC-2 8805 (POMS Test Proposal: WFII Parallel Archive 
Proposal Continuation)

        The WF/PC-2 was used to perform a generic target version of the 
WFPC2 Archival Pure Parallel program.  The program will be used to take 
parallel images of random areas of the sky, following the recommendations 
of the Parallels Working Group.  The proposal completed with no reported 
problems.

    1.4 Completed Two Sets of STIS/CCD 8837 (CCD Dark Monitor-Part 1)

        The Space Telescope Imaging Spectrograph (CCD) was used to monitor 
the darks.  The proposal completed with no reported problems.

    1.5 Completed WF/PC-2 8183 (Morphology of the Most Massive Galaxies in 
the Early Universe)

        The WF/PC-2 was used to make observations of the massive radio 
galaxy MRC0140-25 in order to study its morphology.  High redshift radio 
galaxies are fundamentally important probes of galaxy and cluster 
formation.  The observations were completed as scheduled, and no anomalies 
were reported.

    1.6 Completed STIS/CCD 8838 (Bias Monitor - Part 1)

        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, to build up high-S/N superbiases and track the evolution of hot 
columns.  The proposal completed nominally.

    1.7 Completed WF/PC-2 8706 (Phoenix: "Halo/Disk'' Structures In Dwarf 
Galaxies)

        The WF/PC-2 was used to perform hierarchical clustering scenarios 
for galaxy formation that predict that dwarf galaxies are the first to be 
formed and that they are building blocks of larger galaxies.  In this case, 
the spatial structure and the stellar age and metallicity distribution of 
the Phoenix dwarf galaxy are measured to give support or reject such 
scenarios.  The proposal completed with no anomalous activity.

    1.8 Completed STIS/CCD 8562 (Probing the Large Scale Structure: Cosmic 
Shear Observations)

        The Space Telescope Imaging Spectrograph (CCD) was used to probe 
the distortion of light bundles from distant galaxies, looking at the 
statistical properties of the intervening inhomogeneous {dark} matter 
distribution.  The proposal completed nominally.

    1.9 Completed STIS/MA1 8843 (Cycle 9 MAMA Dark Measurements)

        The Space Telescope Imaging Spectrograph (MA1) was used to perform 
the routine monitoring of the MAMA detector dark noise.  The proposal 
completed nominally.

    1.10 Completed STIS/CCD/MA2 8673 (The Properties of Ly-Alpha Absorbers 
at Redshifts Between 0.9HST)

        The Space Telescope Imaging Spectrograph (CCD and MA2) was used 
obtain new Echelle resolution spectra of three bright quasars which, when 
combined with archived and scheduled observations, will be used to 
characterize the properties of Ly-Alpha absorbers in the redshift range 
0.9<z<1.6.  There were no reported problems.

    1.11 Completed Three Sets of WF/PC-2 8816 (Cycle 9 UV Earthflats)

        The WF/PC-2 was used to obtain sequences of Earth streak flats to 
improve the quality of pipeline flat fields for the WFPC2 UV filter set and 
in order to monitor flat field stability.  There were no reported problems.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions:  7
Successful:  7

  Scheduled Re-acquisitions:  8
Successful:  8

    2.2 FHST Updates:
Scheduled: 14
Successful: 14

    2.3 Operations Notes:

        As documented in HSTAR 8044, the SADE-2 +Solar Array Drive 
Electronics (BE2%DMT3) went out of limits (yellow) high at 011/095112Z, 
with a value of 91.5181 degC, and returned to normal bounds at 
011/095118Z.  The high yellow limit is 90.0 degC.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW