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HUBBLE SPACE TELESCOPE

DAILY REPORT #2746

PERIOD COVERED: 0000Z (UTC) 11/08/00 - 0000Z (UTC) 11/09/00

Daily Status Report as of 314/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

1.1 Completed WF/PC-2 8893 (Decon Visits Associated with Nov 1 2000
WFPC2 Safing)

The WF/PC-2 was used to perform decon and post-decon standard
observations after WF/PC-2 is brought out of safemode { Entered safemode on
Nov 1 2000.}

1.2 Completed STIS/CCD/MA1 8287 (A Search For Transparent Lines of
Sight With Intergalactic He-II Absorption Towards 26 Bright z > 2.9 Quasars)

The Space Telescope Imaging Spectrograph (CCD and MA1) was used to
make He-II absorption line observations of quasar HE0101-302. The aim is
to identify more suitable bright objects for detailed studies of
intergalactic He-II absorption at a redshift of Z <2.9 and >3.2 . A
wavelength calibration observation was also taken. The observations were
executed as scheduled, and no anomalies were noted.

1.3 Completed FGS/1R 8728 (The Low-Mass Multiple System GL 831 {Wolf
922}: Definitive Orbit and the Mass-Luminosity Relation)

Fine Guidance Sensor (FGS) 1R was used to observe GL 831 = Wolf
that belongs to the select group of about one dozen nearby multiple systems
suitable for calibrating the empirical mass-luminosity relation for masses
below 0.2 Msun. This has been observed 13 times with FGS3 through Cycle
7. However, use of FGS 1R should clarify the location and nature of a
fainter third component, possibly of 0.1 Msun, detected in two observations
with the less capable FGS3. The observations completed nominally.

1.4 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.

1.5 Completed 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.

1.6 Completed Five Sets of WF/PC-2 8892 (Test Exposures To Support
WF/PC-2 Shutter RAM Patch)

The WF/PC-2 was used to perform a series of test exposures
supporting all mechanisms and major observing modes of WF/PC-2. These will
be carried out before and after the installation of the RAM patch, in order
to identify any differences in the behavior of the camera. The exposures
will also be used to quantify any difference in the instrumental background
potentially related to the additional on-time of the shutter LEDs. For
modes that actually operate the shutter, the program will consist of
identical exposures so that each exposure type will be carried out with
each blade. The exposures completed nominally.

1.7 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.

1.8 Completed STIS/CCD/MA1 8566 (High Resolution UV/X-Ray Spectroscopy
of SMC X-1)

The Space Telescope Imaging Spectrograph (CCD and MA1) was used to
perform simultaneous observations of the X-ray pulsar SMC X-1 and its B0
companion SK160 with Chandra and ground-based optical telescopes. The
proposer will search for correlation between orbital phase and "bleaching''
of important P Cygni lines by X-ray photoionization, and will model the
simultaneous X-ray, ultraviolet, and optical continuum emission at
different phases of the superorbital period to measure changes in mass
accretion rate, disk structure, and disk size. The proposal completed with
no reported problems.

1.9 Completed STIS/CCD 8172 (STIS Deep DLA Imaging Survey II)

The Space Telescope Imaging Spectrograph (CCD) was used to make
deep observations of quasar/alpha galaxy PHL1222. The HST imaging,
together with ground-based spectroscopy, will unify absorption-line studies
and faint galaxy imaging studies, providing a comprehensive picture of the
history of assembly, star formation, gas consumption, and chemical
enrichment in the Damped Lyman-Alpha galaxies. The observations were
executed as scheduled, and no anomalies were noted.

1.10 Completed Three Sets of STIS/CCD 8631 (Bright Quasar Close Lensing
Search II)

The Space Telescope Imaging Spectrograph (CCD) was used to expand
the Cycle 8 second generation HST snapshot survey of bright quasars,
optimized to find lenses with component image separations < 1". The
observations completed nominally.

1.11 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 0605-085 that shows that X-rays can be
energetically dominant in relativistic jets. The observations completed
nominally.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:
Scheduled Acquisitions: 11
Successful: 11

Scheduled Re-acquisitions: 3
Successful: 3

2.2 FHST Updates:
Scheduled: 27
Successful: 27

2.3 Operations Notes:

WF/PC-2 was recovered with the old RAM load at 312/0000Z via SMS
commanding. This was followed by a decontamination sequence (see
1.1). Pre-patch WF/PC-2 test exposures were taken (see 1.6) followed by
the RAM patch installation at 313/1420Z, again by SMS commanding. This was
followed by post-patch test exposures (see 1.6). No problems have been
reported.

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

The engineering status buffer had its limits adjusted at 313/1158Z
per ROP DF-18A.

SSA transmitter #2 was turned on and off at 313/1338Z, 314/0509Z
and at 314/0154Z in accordance with ROP IC-2.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

GSFC Internal Simulation #1 (Rendezvous/Capture) will be executed
today from approximately 8:00 a.m. until approximately 8:30 p.m. from the GSFC.

Continuation of normal science observations and calibrations.

/CAW