HUBBLE SPACE TELESCOPE

       DAILY REPORT #2958

PERIOD COVERED:  0000Z (UTC) 09/17/01 - 0000Z (UTC) 09/18/01

Daily Status Report as of 261/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed Two Sets of STIS/CCD 8901 (Dark Monitor-Part 1)

        The Space Telescope Imaging Spectrograph (CCD) was used to monitor 
the darks.  There was no anomalous activity.

    1.2 Completed Four Sets of WF/PC-2 8936 (Cycle 10 Supplemental Darks Pt1/3)

        The WF/PC-2 was used to perform a dark calibration program that 
obtains three dark frames every day to provide data for monitoring and 
characterizing the evolution of hot pixels.  The proposal completed with no 
reported problems.

    1.3 Completed STIS/CCD 9121 (Evolution of the Host Galaxies in Low- 
Power AGN)

        The Space Telescope Imaging Spectrograph (CCD) was used to study 
the evolution of low-power AGN host galaxies to z~1.3, allowing the direct 
study of how the formation and life cycles of radio-loud AGN depend on 
intrinsic power.  There were no reported problems.

    1.4 Completed Six Sets of WF/PC-2 9244 (POMS Test Proposal: WFII 
Parallel Archive Proposal Continuation)

        The WF/PC-2 was used to perform a generic target version of the 
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 observations completed with no anomalous 
activity.

    1.5 Completed STIS/CCD 9285 (POMS Test Proposal: STIS Non-scripted 
Parallel Proposal Continuation III)

        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.

    1.6 Completed Five Sets of WF/PC-2 8935 (Cycle 10 Standard Darks)

        The WF/PC-2 was used to obtain 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.  Over an extended 
period these data will also provide a monitor of radiation damage to the 
CCDs.  The proposal completed with no reported problems.

    1.7 Completed STIS/CCD 9143 (Spectrophotometry of Nearby Seyfert 2 
Nuclei: Can We Eliminate the Seyfert 2 Class?)

        The Space Telescope Imaging Spectrograph (CCD) was used to 
investigate Seyfert 2s that are distinguished by the absence of the broad 
emission lines characteristic of Seyfert 1s and more luminous QSOs.  Are 
Seyfert 2s fundamentally different from Seyfert 1s and their brighter 
cousins?  Or is the broad emission line region in Seyfert 2s simply 
suppressed by obscuring material as postulated by the unification 
model?  If the latter model is correct, the weak broad emission lines in 
the Seyfert 2s may simply be overwhelmed by starlight from the 
circumnuclear region, particularly in the case of recent star 
formation.  It is proposed to determine if all Seyfert 2s have {weak} broad 
emission line regions by obtaining long-slit STIS spectroscopy for a 
well-defined sample of 20 Seyfert 2s {3 archival, 17 new}.  The 
observations completed with no anomalous activity.

    1.8 Completed Four Sets of WF/PC-2 8815 (Cycle 9 Earth Flats)

        The WF/PC-2 was used to monitor flatfield stability.  This proposal 
obtains sequences of Earth streak flats to construct high quality flat 
fields for the WF/PC-2 filter set.  These flat fields will allow mapping of 
the OTA illumination pattern and will be used in conjunction with previous 
internal and external flats to generate new pipeline superflats.  The 
proposal completed nominally.

    1.9 Completed Four Sets of WF/PC-2 8941 (Cycle 10 UV Earthflats)

        The WF/PC-2 was used to monitor flat field stability by obtaining 
sequences of earth streak flats to improve the quality of pipeline flat 
fields for the WFPC2 UV filter set.  The proposal had no problems.

    1.10 Completed WF/PC-2 8939 (Cycle 10 Internal Monitor)

        The WF/PC-2 was used to calibrate the internal monitor, to be run 
weekly to monitor the health of the cameras.  No problems were encountered.

    1.11 Completed STIS/CCD 8903 (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.  There were no problems.

    1.12 Completed WF/PC-2 9057 (Host Galaxies of Obscured QSOs Identified 
by 2MASS)

        The WF/PC-2 was used to perform a snapshot survey of red QSOs 
discovered in The Two Micron All Sky Survey {2MASS} to investigate the 
detailed properties of their host galaxies.  This large, possibly dominant, 
population of QSOs in the local universe has been previously overlooked 
because reddening by {intrinsic} obscuration along our line of sight causes 
their colors to be too red for identification by traditional "UV- excess" 
techniques.  Their near-IR colors are similar to PG- type {UV-excess} QSOs, 
but it is far from certain whether they are indeed from the same parent 
population or represent a completely new class of QSO.  There were no 
reported problems.

    1.13 Completed STIS/CCD/MA2 8915 (Echelle Sensitivity)

        The Space Telescope Imaging Spectrograph (CCD and MA2) was used to 
observe the flux standard G191B2B, obtaining echelle spectra in all primary 
and intermediate wavelength settings.  There was no reported anomalous 
activity.

    1.14 Completed STIS/CCD 9128 (A Snapshot Survey of Absorption Lines 
from High Velocity Clouds in the Milky Way)

        The Space Telescope Imaging Spectrograph (CCD) was used to search 
for Mg II and Mg I absorption from Galactic High Velocity Clouds {HVCs} 
along the sightlines of 51 of the brightest QSOs, BL Lacs and Seyfert 2 
galaxies in the sky.  The observations completed with no reported problems.

    1.15 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.

    1.16 Completed STIS/CCD/MA1/MA2 9113 (Solar UV Radiation and the Origin 
of Life on Earth)

        The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was 
used to observe chromospheric models that will enable the proposers to 
predict the extreme-UV emission of the early Sun and its consequences for 
the erosion of the early Earth's atmosphere and the altered oxidation state 
of the planet, and investigate the effect of metallicity on the UV emission 
and its consequences for the photochemistry of Earth-like planets.  There 
was no anomalous activity.

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: 11
Successful: 11

    2.3 Operations Notes:

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

        Using ROP RD-7A, the ESTR was re-conditioned from 260/2215Z until 
260/2304Z.

        The ephemeris table was uplinked at 261/0357Z as directed by ROP DF-7A.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Continuation of normal science observations and calibrations.

/CAW