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Operations CXO Status Report

Friday 29 April 2016 9.00am EDT

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

Real-time procedures were executed on Apr 23, 24, 25 and 27 to turn off the on-board ranging drive function during communications contacts with the Deep-Space Network ground station DSS-54. This action is taken to collect additional characterization data on this station's performance, in order to understand the cause for regular instances of dropped telemetry frames when using this station

A Chandra press release was issued on Apr 28 describing how researchers are using a large sample of galaxy cluster to investigate dark energy. The details of X-ray emission from over 300 galaxy clusters were obtained with Chandra. The galaxy clusters range in distance from about 760 million to 8.7 billion light years from Earth. The study shows that dark energy has not changed over billions of years. For details see:

The schedule of targets for the next week is shown below

        LBQS1235+1453          ACIS-S       May  2
        SwiftJ202313+2042.7    ACIS-S
        fcc143                 ACIS-S
        RYLup                  ACIS-S/HETG
        3XMMJ130323.9-63480    ACIS-S       May  3
        BootesCy17-12 (2 obs)  ACIS-I
        Radiation Belts                     May  4
        UGC11185               ACIS-S
        SN2014C                ACIS-S       May  5
        RYLup                  ACIS-S/HETG
        NGC4206                ACIS-S       May  6
        Mkn876                 ACIS-S/HETG
        BootesCy17-12          ACIS-I
        Radiation Belts                     May  7
        Mkn876                 ACIS-S/HETG
        1H0419-577             ACIS-S
        RYLup                  ACIS-S/HETG
        1H0419-577             ACIS-S       May  8
        SDSSJ121911.16+0429    ACIS-S
        NGC4725                ACIS-I       May  9
        Radiation Belts


All spacecraft subsystems continued to support nominal operations.

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