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Operations CXO Status Report

Friday 6 July 2012 9.00am EDT

During the last week the Chandra observing schedule was replanned to replace a 15 ksec observation of N158C with two other targets which are less sensitive to variations in the ACIS focal plane temperature. The N158C target will be rescheduled in a future week.

A Chandra press release was issued on Jul 3 describing the violent behavior of V1647 Ori, a young Sun-like star spinning at high speed and spewing out super-hot plasma. Using many years of observations from NASA's Chandra, ESA's XMM-Newton, and Japan's Suzaku telescopes, scientists observed extended outbursts associated with faster growth, a surge in X-ray emission, and a dramatic temperature increase. In addition another variation in X-ray emission was found to repeat regularly with a period of about one day. For more details see: http://chandra.harvard.edu/press/12_releases/press_070312.html

A real-time procedure was executed on Jul 3 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer. A second real-time procedure was executed on Jul 5 to update the on-board ephemeris.

The schedule of targets for the next week which includes the two replanned targets is shown below.



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SDSSJ1220+2542 ACIS-S Jul 7 3c268.2 ACIS-S Radiation Belts MXB1659-29 ACIS-S Jul 8 IC4451 ACIS-S RXJ1622.7-2325_P1 ACIS-S Jul 9 HD30177 ACIS-S HR3089 ACIS-S LP851-346 ACIS-S NGC3588 ACIS-S SDSSJ1210+1741 ACIS-S SgrA* ACIS-S HETG PSRJ1124-36 ACIS-S Jul 10 Radiation Belts SgrA* ACIS-S HETG PSRJ1723-2837 ACIS-S Jul 11 SDSSJ114702.51+1625 ACIS-S 3c275 ACIS-S Jul 12 SgrA* ACIS-S HETG Radiation Belts Jul 13 SgrA* ACIS-S HETG SgrA* ACIS-S HETG

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All spacecraft subsystems continued to support nominal operations.

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