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Operations CXO Status Report

Monday 17 April 2000 11.00am EDT

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

A real-time procedure was run at 5.30pm EDT on 3/15 with ACIS to perform the second Squeegee-mode test designed to improve the energy resolution of the degraded chips. The test was conducted with the S0 chip and included runs with an optimized 16 rows, 8 rows and a control run. The test was completed successfully and initial results indicate an improvement due to the optimization. Several more tests are planned over the next several weeks to determine the optimal parameters for the new mode.

Other real-time procedures run during the week included a routine EIA Sequencer self-check and a routine diagnostic dump of the CPE warm start counter.

The planned observations for next week are as follows.

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NGC 4395 ACIS-S Apr 17 NGC 4258 ACIS-S Jet of 3C 390.3 ACIS-S Radiation Belts XTE J1118+48 ACIS-S/LETG Apr 18 Mrk 273X ACIS-S RX J1720.1+2638 ACIS-I Apr 19 H1413+117 ACIS-S NGC 4649 ACIS-S NGC 4278 ACIS-S Apr 20 M87 ACIS-S NGC 4374 ACIS-S Radiation Belts V382Velorum1999 ACIS-I Apr 21 EMSS 1054.5-0321 ACIS-S NGC 2110 ACIS-S Apr 22 Abell 3125 ACIS-I NGC 526A ACIS-S Apr 23 Radiation Belts GRS 1915+105 ACIS-S/HETG

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The spacecraft subsystems continued to operate nominally.

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