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Operations CXO Status Report

Friday 14 February 2003 8.30am EST

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

Chandra passed through the seventh and eighth eclipses of the Spring 2003 season on 8 and 11 of Feb with nominal power and thermal performance. Real-time procedures were run following each eclipse to disable the Momentum Unload subfunction in the flight software to ensure momentum dumps remain under manual control. A procedure to clear a glitch counter that incremented during eclipse exit was also run on 11 Feb.

A real-time procedure was completed on Feb 12 to update the on-board ephemeris.

The observing schedule for next week is shown below and includes a series of Calibration observations of AR Lac with the HRC.

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SDSS J104230.14+010223 ACIS-S Feb 17 NGC 4361 ACIS-S HS 1251+2636 ACIS-S GEV J1825-1310 ACIS-I MACHO-96-BLG-5 ACIS-S SGR 1900+14 ACIS-S RX J1914.4+2456 ACIS-S Feb 18 Radiation Belts RX J1914.4+2456 ACIS-S Feb 19 NGC 6888 ACIS-S Markarian 231 ACIS-S Feb 20 Radiation Belts Feb 21 ARLac (21 obs) HRC-S ARLac (21 obs) HRC-I Feb 22 NGC 315 ACIS-S 87GB 0718+2748 ACIS-S Feb 23 MACSJ-0911.2+1746 ACIS-I SDSS J015650.28+005308 ACIS-S RX J2217.9-5941 ACIS-S V838 Mon ACIS-S

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All spacecraft subsystems, with the exception of MUPS thruster A-1 as noted above, continued to operate nominally.

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