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Operations CXO Status Report

Friday 8 April 2011 8.00am EST

During the last week the observing schedule was replanned to include a 25 ks observation of the source GRB110402A that was accepted as a Target of Opportunity on Apr 4. A scheduled observation of Abell 1775 was impacted by the TOO and will be rescheduled in a later load.

A real-time procedure was executed on Apr 6 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer.

Preparations are complete for the start of the spring 2011 eclipse season beginning on Apr 15. This season contains 23 eclipses and will end on Jun 9. The season includes a back-to-back Lunar and Earth eclipse event on Jun 2.

A Chandra press release was issued on Apr 7 as a NASA press release describing multi-telescope observations of the gamma-ray burst, GRB110328A. The source of GRB110328A, observed by the NASA telescopes Chandra, Hubble, and Swift, appears to be a galaxy about 3.8 billion light years from Earth. Early analysis of the data suggests the burst may have been caused by a star torn apart by a supermassive black hole in the galaxy's center. For details see: http://chandra.si.edu/press/11_releases/press_040711.html

The schedule of targets for the next week is shown below and includes an observation of MAXIJ1659-152, which was accepted as a Target of Opportunity on Apr 5 and is coordinated with the EVLA, and an observation of TW Hya coordinated with HST.

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MACSJ1226.8+2153 ACIS-I Apr 11 Crab ACIS-S Apr 12 Radiation Belts NGC1386 ACIS-S Apr 13 TWHya ACIS-S/LETG NGC1386 ACIS-S IGRJ15391-5307 ACIS-I Apr 14 IGRJ15415-5029 ACIS-I MAXIJ1659-152 ACIS-S GZ_merger_AGN_6 ACIS-I Mkn841 ACIS-S/HETG SLJ1647.7+3455 ACIS-I Apr 15 Radiation Belts Mkn841 ACIS-S/HETG NGC7008 ACIS-S Apr 17

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All spacecraft subsystems continued to support nominal operations.

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