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HUBBLE SPACE TELESCOPE

DAILY REPORT #3066

PERIOD COVERED: 0000Z (UTC) 02/27/02 - 0000Z (UTC) 02/28/02

Daily Status Report as of 059/0000Z

1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:

1.1 Completed Seven Sets of STIS/CCD 9088 (Next Generation Spectral
Library of Stars)

The Space Telescope Imaging Spectrograph (CCD) was used to produce
a "Next Generation'' Spectral Library of 600 stars for use in modeling the
integrated light of galaxies and clusters by using the low dispersion UV
and optical gratings of STIS. The library will be roughly equally divided
among four metallicities, very low {Fe/H < -1.5}, low {-1.5 < Fe/H < -0.5},
near-solar {-0.5 < Fe/H < 0.1}, and super-solar {Fe/H > 0.1}, well-sampling
the entire HR-diagram in each bin. Such a library will surpass all extant
compilations and have lasting archival value, well into the Next Generation
Space Telescope era. No problems occurred.

1.2 Completed Nine Sets of WF/PC-2 9318 (POMS Test Proposal: WFII
Parallel Archive Proposal Continuation)

The WF/PC-2 was used to perform the generic target version of the
WFPC2 Archival Pure Parallel program. The program was used to take
parallel images of random areas of the sky, following the recommendations
of the Parallels Working Group. There were no reported problems.

1.3 Completed Three Sets of WF/PC-2 8937 (Cycle 9 Supplemental Darks pt2/3)

The WF/PC-2 was used obtain three dark frames every day to provide
data for monitoring and characterizing the evolution of hot pixels. No
problems were encountered.

1.4 Completed Three Sets of STIS/CCD 9317 (Pure Parallel Imaging
Program: Cycle 10)

The Space Telescope Imaging Spectrograph (CCD) was used to perform
the default archival pure parallel program for STIS during cycle 10. There
were no reported problems.

1.5 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.

1.6 Completed STIS/MA2 8048 (Secular Changes in the Jet of M87)

The Space Telescope Imaging Spectrograph (CCD) was used to continue
the investigation of the M87 jet by studying proper motions and structural
changes of the jet. The proposal will track secular changes and motions
in the jet and nucleus. The observations completed and no anomalies were
reported.

1.7 Completed STIS/MA2 9573 (NUV-MAMA Daily Dark Monitor)

The Space Telescope Imaging Spectrograph (MA2) was used to perform
daily monitoring of the NUV MAMA detector dark noise in order to monitor
the effects of thermal changes on the NUV dark rate. No problems occurred.

1.8 Completed FGS/1 9183 (Completing the Astrometric Orbit for a Pair
of Pre-Main Sequence Low-Mass Stars)

Fine Guidance Sensor #1 was used to resolve a visual binary that is
part of the closest system of pre-main sequence stars, HD 98800. This
system is 50 pc away and this binary has a period just under a year,
meaning the separation is about 20 milliarcsec. The two stars have similar
brightnesses. The goal is to determine an astrometric orbit which, when
combined with radial velocity observations, leads to the first
dynamically-determined masses for low-mass pre-main sequence stars. All
observations completed normally.

1.9 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.

1.10 Completed STIS/MA2 9182 (The Thermal Glow of Gamma Ray Pulsars)

The Space Telescope Imaging Spectrograph (MA2) was used to perform
time- and energy- resolved UV observations of two young Gamma-ray
pulsars. The targets, the Vela and Geminga pulsars, are the brightest
neutron stars spanning the critical 10^4-10^6y age range, where the thermal
surface emission is detectable. The UV lightcurves obtained will provide
phase-resolved colors that will isolate this thermal emission and test the
equation of state and fundamental interactions of matter at supernuclear
densities. In addition, combining the UV results with IR/optical and X-ray
data, the proposers will map spectral variations in the non-thermal
pulsations and probe the acceleration physics of these GeV gamma-ray
machines. All observations completed without incident.

1.11 Completed WF/PC-2 9582 (Hubble Heritage Observations of NGC 6369)

The WF/PC-2 was used to observe NGC 6369 for the Hubble Heritage
Program to be released as a Public Relations Image. No problems were reported.

1.12 Completed STIS/CCD 9070 (A Census of Nuclear Star Clusters in
Late-Type Spiral Galaxies: II. Spectroscopy and Stellar Populations)

The Space Telescope Imaging Spectrograph (CCD) was used to
investigate spiral galaxies that have a prominent star cluster in their
dynamical center. Statistics for cluster frequency, size, and luminosity
remain incomplete. The proposal completed as planned.

2.0 FLIGHT OPERATIONS SUMMARY:

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

Scheduled Re-acquisitions: 7
Successful: 7

2.2 FHST Updates:
Scheduled: 20
Successful: 20

2.3 Operations Notes:

Using ROP SR-1A, the SSR-1 EDAC error counter was cleared at 059/0240Z.

The engineering status buffer was dumped and cleared at 059/0025Z
per ROP SR-1A.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

The STS-109 launch to support the Servicing Mission 3B was delayed
approximately 24 hours. The launch window is 060/0622Z to 060/0724Z.

/CAW