HUBBLE SPACE TELESCOPE

   DAILY REPORT #2794

PERIOD COVERED:  0000Z (UTC) 01/24/01 - 0000Z (UTC) 01/25/01

Daily Status Report as of 025/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed STIS/CCD 8881 (An Unbiased Survey of X-Ray and Optical 
Emission From Extended Radio Jets in AGN)

        The Space Telescope Imaging Spectrograph (CCD) was used to an X-ray 
bright jet in the distant quasar PKS 1354+195 that shows that X-rays can be 
energetically dominant in relativistic jets.  The observations completed 
nominally

    1.2 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.

    1.3 Completed Four 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.  As described in 2.1 and HSTAR 8059, the acquisition for the final 
iteration of this proposal failed, the take data flag remained down, and 
all observations for that iterations were lost.  Otherwise, the proposal 
completed nominally for other iterations.

    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/STIS/CCD 8559 (The Role of Dark Matter in Cluster 
Formation and Galaxy Evolution)

        The WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) were 
used to observe the outer regions of massive clusters that represent 
transitional areas of great cosmological importance where field galaxies 
encounter the steep potential wells of dark matter and baryonic hot 
gas.  Little is known about either the dark matter profile at large radii 
or the morphological properties of infalling galaxies at those redshifts 
where strong evolution is observed in the cluster cores.  The proposal 
completed normally, with no reported problems.

    1.6 Completed Three Sets of 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.  As described in 2.1 and HSTAR 8059, the acquisition for the 
third iteration of this proposal failed, the take data flag remained down, 
and all observations were lost for that iteration.  Otherwise, the proposal 
completed nominally.

    1.7 Completed WF/PC-2 8602 (A Snapshot Survey of the Sites of Recent, 
Nearby Supernovae)

        The WF/PC-2 was used to conduct a snapshot survey in V and I of the 
sites of the nearby SNe, which have precisely known positions, to obtain 
high-resolution information on their local environment.  The proposal 
completed with no reported problems.

    1.8 Completed STIS/CCD/MA1 7288 (High Resolution Ultraviolet 
Spectroscopy of Hercules X-1/HZ Herculis)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
make ultraviolet spectrographic observations of the X-ray binary pulsar 
4U1656+35 (a.k.a., Hercules X-1/HZ Herculis).  A wavelength calibration 
observation was also taken.  The observations were executed as scheduled, 
and no anomalies were noted.

    1.9 Completed WF/PC-2 8823 (Decontaminations and Associated 
Observations Pt. 2/4)

        The WF/PC-2 was used for the monthly WFPC2 decons.  Also included 
were instrument monitors tied to decons: photometric stability check, focus 
monitor, pre- and post-decon internals {bias, intflats, kspots, & darks}, 
UV throughput check, VISFLAT sweep, and internal UV flat check.  There were 
no reported problems.

    1.10 Completed STIS/CCD 8607 (Completing the Local AGN Inventory: The 
AGN Content of Composite Nuclei)

        The Space Telescope Imaging Spectrograph (CCD) was used to increase 
the knowledge of the local space density of AGNs which is of fundamental 
importance to a number of astrophysical problems.  A significant fraction 
of nearby galaxies have nuclei whose spectra are intermediate between those 
of LINERs and nuclear starbursts.  These ``transition objects'' may be 
composite systems that contain both a central AGN and circumnuclear star 
formation.  We will test this hypothesis by obtaining spatially-resolved 
optical spectra of a well-defined sample of 15 nearby transition nuclei 
selected from the extensive ground-based survey of Ho, Filippenko, and 
Sargent.  The observations completed with no reported problems.

    1.11 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.

    1.12 Completed STIS/CCD 8228 (The Black Hole Versus Bulge Mass 
Relationship in Spiral Galaxies)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
observations of the galaxy NGC-3756 in order to study the black hole versus 
bulge mass relationship in spiral galaxies.  A wavelength calibration image 
was also taken.  The observations were executed as scheduled, and no 
anomalies were noted.

    1.13 Completed WF/PC-2 8598 (Snapshot Survey of Extended OIIl Lambda 
5007Angstrom Emission in Seyfert Galaxies)

        The WF/PC-2 was to be used for a snapshot survey of narrow band 
OIII Lambda 5007Angstrom images for a well defined sample of 88 Seyfert 
galaxies {29 Seyfert 1s and 59 Seyfert 2s}, 18 of which already have data 
in the archive, selected from a mostly isotropic property, the 60Mum 
flux.  As described in 2.1 and HSTAR 8059, the acquisition for this 
proposal failed, the take data flag remained down, and all observations 
were lost.

2.0 FLIGHT OPERATIONS SUMMARY:

    2.1 Guide Star Acquisitions:
       Scheduled Acquisitions:  7
Successful:  6

        As documented in HSTAR 8059, the acquisition scheduled for 
025/010106Z failed to RGA control when the scan step limit was exceeded on 
FGS-3.  The proposals described in 1.3, 1.6, and 1.13 were affected.
  Scheduled Re-acquisitions:  9
Successful:  9

    2.2 FHST Updates:
Scheduled: 16
Successful: 16

    2.3 Operations Notes:

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

        Gyro #6 was successfully powered on at 024/2232Z.  It was monitored 
through three type 2 slews in which all motor current, temperature and rate 
telemetry was nominal.  Following the loading of new biases, Gyro #6 was 
successfully placed in shadow mode at 025/0322Z.  A subsequent FHST map 
showed nominal attitude errors of 0, -8, and 0 arc-seconds.  PCS SEs 
continue to analyze all data collected during the testing.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW