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Operations CXO Status Report

Monday 27 March 2000 11.30am EST

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

The observatory passed through the 11th and 12th eclipses of the Spring 2000 season with nominal power and thermal performance. The eclipses were both medium duration (40-100 min) and occurred on 3/22 at 7:36pm EST (47.9 min), 3/25 at 11:08am EST (42.7 min). The final eclipse of the season will occur at 2:43am on 3/28.

A real-time procedure was completed on 3/25 to uplink a software constant patch to configure the Electrical Power System software for the final eclipse of the spring 2000 season. The eclipse will be a short eclipse ( < 40 minutes). A second patch will be uplinked following this eclipse to configure for the solstice period.

The scheduled observations for the next week are:

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FK COM/HD 117555 ACIS-S/HETG Mar 26 NGC 4826 ACIS-S Mar 27 GX 349+2 ACIS-S/HETG Radiation Belt Eclipse-13 32.7 min Mar 28 Zeta Pup ACIS-S/HETG Sgr B2 ACIS-I Mar 29 Radiation Belt Mar 30 QB 1429-008 ACIS-I Mar 31 Abell 2219 ACIS-S B2 0331+39 ACIS-S Algol ACIS-S/HETG Trapezium Cluster ACIS-I Apr 1 Radiation Belt

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The spacecraft subsystems continued to operate nominally.

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