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Operations CXO Status Report

Friday 29 October 2010 9.00am EDT

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

A real-time procedure was executed on Oct 27 to perform a diagnostic dump of the Central Processing Electronics (CPE). A second real-time procedure was executed on Oct 28 to re-initialize the flight software Thruster Command Processing subfunction in order to prevent the occurrence of an overflow condition.

Preparations are complete for the start of the fall 2010 eclipse season beginning on Nov 2. This season contains 11 eclipses and will end on Nov 21.

A Chandra image release was issued on Oct 26 of the galaxy cluster 3C186. The new Chandra observation of 3C186 reveals a very distant galaxy cluster with a quasar and a "cooling core" at its center. Cooling cores are regions bright in X-ray emission where gas is cooling. Finding a system like this at such a great distance, 8 billion light years, is unusual and could provide insight into the triggering of quasars and the growth of galaxy clusters. For details see: http://chandra.harvard.edu/photo/2010/3c186/ Of note last week was the Chandra User Committee meeting held at the CXC on Oct 25-25.

The schedule of targets for the next week is shown below and includes a series of observations of the comet 103P/Hartley 2 and observations of J193239.6+382518, J192630.6+413314, J191016.9+392951, J192430.2+510146, J191438.6+502857, and J194016.3+463251, which were accepted as Director's Discretionary Time TOOs on Oct 20.

------------------------------------------
       Radiation Belts                     Oct 30
       CassiopeiaA            ACIS-S       Oct 31
       3C357                  ACIS-S
       G299.2-2.9             ACIS-I
       3C258                  ACIS-S       Nov  1
       3C79                   ACIS-S
       1RXSJ053051.9+521606   ACIS-S       Nov  2
       CassiopeiaA            ACIS-S
       Radiation Belts
       G299.2-2.9             ACIS-I
       3C89                   ACIS-S       Nov  3
       3C93.1                 ACIS-S       Nov  4
       4C31.04                ACIS-S
       NGC1514                ACIS-S
       103P_HARTLEY_2A        ACIS-S
       J114611.5+202355       ACIS-S
       J193239.6+382518       ACIS-S
       J192630.6+413314       ACIS-S
       Radiation Belts                     Nov  5
       103P_HARTLEY_2A        ACIS-S
       G299.2-2.9             ACIS-I
       J191016.9+392951       ACIS-S       Nov  7
       J192430.2+510146       ACIS-S
       A376                   ACIS-I
       J191438.6+502857       ACIS-S
       J194016.3+463251       ACIS-S

------------------------------------------

All spacecraft subsystems continued to support nominal operations.

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