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Operations CXO Status Report

Friday 14 May 2010 9.00am EDT

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

Real-time procedures were executed on May 8 in preparation for the start of the 2010 summer eclipse season: one to activate SCS 29 and one to dump and clear the EPS glitch counters. Chandra passed through the first and second eclipses of the season on May 9 and 11 respectively, with nominal power and thermal performance. A real-time procedure was executed on May 13 to update the on-board ephemeris.

A Chandra press release was issued on May 11 describing observations from NASA's Chandra X-ray Observatory and ESA's XMM-Newton that provide the strongest evidence yet that the "missing matter" in the nearby Universe is located in an enormous web of hot, diffuse gas. To get this result, researchers analyzed X-ray light from a distant quasar that passed through a "wall" of galaxies about 400 million light years from Earth. For details see: http://chandra.harvard.edu/press/10_releases/press_051110.html

The schedule of targets for the next week is shown below

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Radiation Belts May 17 ChandraDeepField-S ACIS-I ESO362-G18 ACIS-S May 18 SNR0049-73.6 ACIS-S ESO540-014 ACIS-S XMMJ173203.3-344518 ACIS-S SNR0049-73.6 ACIS-S May 19 ESO362-G18 ACIS-S Radiation Belts May 20 HCG79 ACIS-S LATPSRJ1742-20 ACIS-S May 21 SDSSJ161332.53+2834 ACIS-S IC10 ACIS-S ESO362-G18 ACIS-S SNR0049-73.6 ACIS-S May 22 Radiation Belts SNR0049-73.6 ACIS-S QJ0158-4325 ACIS-S May 23 ChandraDeepField-S ACIS-I ESO092-001 ACIS-S May 24

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All spacecraft subsystems continued to support nominal operations.

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