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Operations CXO Status Report

Friday 16 May 2003 8.00am EDT

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

The IRU-1 gyro-1 current remained at ~150mA (its yellow limit) with continued noisy behavior.

Of note last week was the approval by the Flight Director Board of the transition to DSS-54 following its upgrade to DSN's next generation NSP (Network Simplification Project) equipment. All upgraded stations have now been approved for operational use and we thank DSN for support and cooperation during the transition period.

A Chandra image release of the compact group of galaxies known as Stephan's Quintet was made on May 8. The Chandra image when combined with the the optical provides an excellent example of the tumultuous dynamics of a compact group. For details see: http://chandra.harvard.edu/photo/2003/stephan/index.html.

The observing schedule for next week is shown below and includes two observations of Mrk 279 coordinated with HST and FUSE.

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M87 ACIS-S May 18 TXS 1259+468 ACIS-S Mrk 279 HRC-S/LETG HR 7547 HRC-I May 19 Radiation Belts Mrk 279 HRC-S/LETG May 20 G21.5-0.9 (2 obs) ACIS-I SDSS J001115+144601 ACIS-S Fornax Cluster (2 obs) ACIS-I Radiation Belts May 21 A3562 ACIS-I May 22 NGC 3256 ACIS-S MH 2136-428 ACIS-S May 23 Fornax Cluster (2 obs) ACIS-I Radiation Belts May 24 PSR J1016-5857 ACIS-S May 25 PKS0537-28_1 ACIS-I

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All spacecraft subsystems, with the exception of the MUPS thruster A-1 under investigation, continued to operate nominally.

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