HUBBLE SPACE TELESCOPE

   DAILY REPORT #2926

PERIOD COVERED:  0000Z (UTC) 07/31/01 - 0000Z (UTC) 08/01/01

Daily Status Report as of 213/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

    1.1 Completed Three 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.

    1.2 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.

    1.3 Completed Four Sets of STIS/CCD 8808 (POMS Test Proposal: STIS 
Non-Scripted Parallel Proposal Continuation III)

        The Space Telescope Imaging Spectrograph (CCD) was used to make 
non-scripted, parallel observations as part of a POMS test proposal.  The 
observations completed with no anomalous activity.

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

        The WF/PC-2 was 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.  These 
data will be used: 1} to determine the origin of the misalignment between 
the accretion disk axis and the host galaxy plane axis, which can be due to 
mergers with other galaxies, or by the self induced radiation warping; 2} 
to compare the size and shape of the Narrow Line Regions (NLR) of Seyfert 
1s and Seyfert 2s, and to study the frequency of conically shaped NLR in 
Seyfert galaxies, which are usually unresolved from ground-based 
observations; and 3} estimate the importance of shocks to the ionization of 
the NLR.  The observations completed with no reported problems.

    1.5 Completed Two 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.

    1.6 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.

    1.7 Completed WF/PC-2 9124 (Mid-UV SNAPSHOT Survey of Nearby 
Irregulars: Galaxy Structure and Evolution Benchmark)

        The WF/PC-2 was used to investigate the relation between star 
formation and the global physical characteristics of galaxies to interpret 
the morphologies of distant galaxies in terms of their evolutionary 
status.  Distant galaxies are primarily observed in their rest frame 
mid-ultraviolet.  They resemble nearby late-type galaxies, but are they 
really physically similar classes of objects?  It is proposed to address 
this question through a SNAPSHOT survey in the 2 mid-UV filter F300W of 98 
nearby late-type, irregular and peculiar galaxies.  No problems were reported.

    1.8 Completed STIS/CCD 8865 (Bias Monitor-Part 2)

        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 with no anomalous activity.

    1.9 Completed WF/PC-2 8828 (Cycle 9 Supplemental Darks pt3/3)

        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 with no reported problems.

    1.10 Completed Two Sets of WF/PC-2 9060 (Photometry of a Statistically 
Significant Sample of Kuiper Belt Objects)

        The WF/PC-2 was used to propel the physical study of KBOs forward 
by performing accurate photometry at V, R, and I on a sample of up to 150 
KBOs.  The sample is made up of objects that will be observed at thermal 
infrared wavelengths by SIRTF and will be used with those data to derive 
the first accurate diameters and albedos for a large sample of KBOs.  The 
observations completed nominally.

    1.11 Completed STIS/CCD/MA1 9053 (The Late Evolution of Low-Mass Stars: 
a Deep UV Color-Magnitude Diagram of M32)

        The Space Telescope Imaging Spectrograph (CCD and MA1) was used to 
construct a deep far-UV color-magnitude diagram of the hot stellar 
population in the center of M32 {NGC221}.  The previous Cycle 7 near-UV 
STIS observations of the M32 core resolved 8000 stars in a single 
bandpass.  While these observations provided no color information, they 
nonetheless showed conclusively that hot horizontal branch {HB} stars exist 
in M32.  Moreover, the near-UV luminosity function showed a surprising lack 
of post-asymptotic giant branch {post-AGB} stars, indicating that they 
evolve much more rapidly than expected from canonical theory.  Obtaining 
color information is the vital next step in extending this analysis.  There 
were no reported problems.

    1.12 Completed WF/PC-2 8059 (POMS Test Proposal: Targeted Parallel 
Archive Proposal)

        The WF/PC-2 was used to observe the parallel opportunities 
available in the neighborhood of bright galaxies are treated in a slightly 
different way from the normal pure parallels.  Local Group galaxies offer 
the opportunity for a closer look at young stellar 
populations.  Narrow-band images in F656N can be used both to identify 
young stars via their emission lines, and to map the gas distribution in 
star-forming regions.  The observations completed nominally.

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: 21
Successful: 21

    2.3 Operations Notes:

        Using ROP SR-1A, the SSR EDAC error counter was cleared six 
times.  Per HSTAR 8291, excessive EDAC errors (303) during a SSR dump at 
212/194100Z necessitated a re-transmit ( at 212/2212Z using ROP 
SR-2A).  That dump resulted in 549 errors.  Earlier, ROP-2A was used to 
re-dump engineering data at 212/0921Z.  On each of the re-dump occasions 
ROP SR-2A was utilized to re-configure the TRI module.

        The STIS MCE-1 reset at 213/020132Z while the low voltage was on 
and while inside an SAA interval.  ROP NS-12 was used to reset the STIS 
flight software error counter at 213/0225Z.  MAMA-1 will be recovered at 
213/1648Z, the time of the next SMS high voltage commanding.

        SI C&DH errors were rest at 213/0331Z per ROP NS-5.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

        Nominal Trim Relay Software Charge Control configuration, from two 
to three batteries, will be restored (at approximately 213/15000Z) since 
the most recent high high sun-time period (days.190-205) is over.  The CCC 
5 K2 V/T Level will be left at Level 5 in an attempt to help stabilize 
battery 5 pressure.  (Nominal configuration is K52=Level 4).

        Continuation of normal science observations and calibrations.

/CAW