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Operations CXO Status Report

Friday 12 August 2011 9.00am EDT

A real-time procedure was executed on Aug 5 to perform a manually commanded momentum dump. This dump was required since a scheduled momentum dump was missed due to the high-radiation event of Aug 4.

A real-time procedure was executed on Aug 6 verify that the radiation environment as observed by the HRC anticoincidence shield had decreased to an acceptable level and a replanned schedule was started. Chandra completed this observing schedule as planned.

A Chandra image release was issued on Aug 11 describing VV 340, a pair of interacting galaxies that are destined to merge. The Chandra data shows that the northern galaxy contains an obscured and rapidly growing supermassive black hole. Data from other observatories shows that the two galaxies are evolving at different rates. For details see:

The schedule of targets for the next week is shown below and includes an observation of MAXIJ1659-152, from a series of Target of Opportunity observations accepted on Apr 5, and an observation of the Crab, from a series of Director's Discretionary Time TOO observations accepted on Dec 14.

SPT-CLJ2325-4111       ACIS-I       Aug 14
         RXCJ0605_Field2        ACIS-I
         HD120066               ACIS-S
         NGC3921                ACIS-S
         Radiation Belts
         Crab                   ACIS-S       Aug 15
         J2256-10               ACIS-S
         G072.80-18.72          ACIS-I
         MAXIJ1659-152          ACIS-S
         A133D                  ACIS-I       Aug 16
         SPT-CL2034-5936        ACIS-I
         Radiation Belts                     Aug 17
         Oph1622-2405           ACIS-S       Aug 18
         W49B                   ACIS-S
         Radiation Belts                     Aug 20
         Oph1622-2405           ACIS-S
         W49B                   ACIS-S       Aug 21


All spacecraft subsystems continued to support nominal operations.

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