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Operations CXO Status Report

Friday 5 March 2004 10.00am EST

During the last week Chandra completed the observing schedule as planned.

On Mar 5 the OCC supported DSN in a software test of new D-5 software for use with the 26m dishes. The test was completed successfully.

Of note last week was the approval of a new mission planning model for predicting radiation belt entry and exit times. The new Chandra Radiation Model will allow more accurate predictions and is expected to result in ~2 hours per week or ~375Ks per year of additional observing time.

A Chandra press release was made on Mar 1 describing observations of powerful X-ray sources found in nearby galaxies that may represent a new class of objects. The sources, which are not as hot as typical neutron-star or black-hole X- ray sources, could be a large new population of black holes with masses several hundred times that of the sun. For details see: http://chandra.harvard.edu/press/04_releases/press_030104.html

The schedule of targets for the next week is shown below.

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Radiation Belts Mar 8 MACS911.2+1746 ACIS-I Spica (Alpha Vir) ACIS-S/LETG HR 7012 ACIS-I Mar 9 NGC 1313 X-2 ACIS-S Mar 10 2QZ J031056.9-3059 ACIS-S RXCJ0528.9-3927 ACIS-I Radiation Belts NGC 3521 ACIS-S Mar 11 NGC 3384 ACIS-S LBQS 1203+1530 ACIS-S M101 ACIS-S G21.5-09 ACIS-I Mar 12 G21.5-09 HRC-I G21.5-09 HRC-S SDSS J132323.78-00 ACIS-S Mar 13 Radiation Belts M101 ACIS-S G21.5-09 ACIS-S Mar 14

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All spacecraft subsystems continued to support nominal operations.

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