HUBBLE SPACE TELESCOPE

   DAILY REPORT #2803

PERIOD COVERED:  0000Z (UTC) 02/06/01 - 0000Z (UTC) 02/07/01

Daily Status Report as of 038/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed WF/PC-2 8600 (Dwarf Elliptical Galaxy Snapshot Survey III)

        The WF/PC-2 was used to extend our V and I snapshot survey of 
nearby dwarf elliptical {dE} galaxies to include a sample of 30 bright dE 
with significant globular cluster {GC} populations.  There were no reported 
problems.

    1.2 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.

    1.3 Completed Five 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.

    1.4 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 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.

    1.6 Completed Three Sets of 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.

    1.7 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.

    1.8 Completed FGS/1 9167 (Astrometry of the Extrasolar Planet of 
Epsilon Eridani)

        Fine Guidance Sensor #1 was used in position mode to determine the 
astrometric elements {perturbation orbit semimajor axis and inclination} of 
the candidate extra-solar planet around the K2 V star Epsilon Eridani that 
has been detected by Dopler spectroscopy.  These observations will also 
permit determination of  the actual mass of the planet by providing the 
sin{i} factor which can not be determined with the radial velocity 
method.  There was no anomalous activity.

    1.9 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.

    1.10 Completed STIS/CCD 8663 (Survey of SMC Planetary Nebulae: Nebular 
and Stellar Evolution in a Low- Metallicity Environment)

        The Space Telescope Imaging Spectrograph (CCD) was used to survey 
of SMC planetary nebulae {PNe} in order to study the co-evolution of the 
nebulae and their central stars, in an environment that is chemically very 
metal poor.  We will obtain STIS imaging and medium-resolution slitless 
spectroscopy that will yield line fluxes and nebular morphologies in 
important emission lines, plus magnitudes of the central stars.  From these 
data we will gather a harvest of information: the nebular size, morphology, 
ionization structure, density, and mass; and the central star temperature, 
luminosity, and mass.  The proposal completed with no reported anomalies.

    1.11 Completed WF/PC-2 8883 (POMS Test Proposal: WFII Backup Parallel 
Archive Proposal II)

        The WF/PC-2 was used to complete a POMS test proposal designed to 
simulate scientific plans.  There were no reported problems.

    1.12 Completed Two Sets of WF/PC-2/STIS/CCD 8679 (Constraining the Age 
of the Oldest Stars from the White Dwarf Cooling Sequence in M4)

        The WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) were 
used to search for the oldest and hence coolest white dwarfs {WDs} in M4, 
the nearest Galactic globular cluster to the Sun.  New models for cooling 
hydrogen white dwarfs predict that their colors should become bluer, rather 
than redder, with increasing age. The goal is to test these models and at 
the same time constrain the age of M4.  The proposal completed with no 
problems.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions:  6
Successful:  6

  Scheduled Re-acquisitions: 10
Successful: 10

    2.2 FHST Updates:
Scheduled: 12
Successful: 12

    2.3 Operations Notes:

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

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW