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Operations CXO Status Report

Friday 6 October 2000 3.30pm EDT

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

Real-time procedures were completed during the last week to re-insert the LETG following the completion of the target of opportunity GB000926 at 4.30pm EDT on 29 Sept, retract the LETG as planned at 12.30pm EDT on 2 October, and to perform a test to determine the relative positions of the LETG bumper and retract limit switch. The bumper test was conducted at 12.30pm EDT on 4 October and the test data are being analyzed.

An unexpected Solid State Recorder (SSR) event occurred at 12:14pm on 29 Sept when recording switched from SSR-A to SSR-B without a commanded action. The switch occurred coincident with a commanded play-back from SSR-A and a fault tree analysis is under development. Following the switch, recording was continued on SSR-A, all data was recovered and all subsequent recording and playbacks have been nominal.

The planned observations for the coming week are as follows.

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GRB000926 ACIS-S Oct 8 Radiation Belt Oct 9 GRO J0422+32 ACIS-I Oct 10 A520 ACIS-I B2 0738+313 ACIS-S Abell 963 ACIS-S 3C 219 ACIS-S Oct 11 APM08279+5255 ACIS-S NGC 507 ACIS-S M31 (multiple) HRC-I Radiation Belt Oct 12 NGC 720 ACIS-S A521 ACIS-S Oct 13 SMC X-1 ACIS-S A133 ACIS-S HE0230-2130 ACIS-S Oct 14 RX J0925.7-4758 ACIS-S SMC X-1 ACIS-S NGC 7582 ACIS-S Radiation Belt NGC 7582 ACIS-S G11.2-0.3 ACIS-S Oct 15 G29.7-0.3 ACIS-S

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All spacecraft subsystems continued to operate nominally.

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