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Operations CXO Status Report

Friday 10 April 2020 9.00am EDT

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

Real-time procedures were executed during each ground contact to reset the DSN Outage Dead Man Load. This is a new procedure to protect the spacecraft in the case of an unexpected sustained loss of DSN communication with the spacecraft.

A NASA press release was issued Apr 3 discussing NASA's approach to operations during the COVID-19 emergency. Specifically, Chandra continues to carry out normal science operations. Chandra's annual peer review will be held in June with participants joining remotely. For details see:

A Chandra press release was issued on Apr 8 discussing Chandra and XMM-Newton observations indicating non-uniformity in the expansion of the universe. Astronomers using X-ray data from these orbiting observatories studied hundreds of galaxy clusters, the largest structures in the universe held together by gravity, and how their apparent properties differ across the sky. Based on the cluster observations observers may have found differences in how fast the universe is expanding depending on direction. For details see:

The schedule of targets for the next week is shown below and includes observations of SN2014C coordinated with NuSTAR, observations of Maffei 1 coordinated with NuSTAR, and an observation of PKS 0620-52, which is a follow-up to a Target of Opportunity accepted on Feb 5.

        Kapteyn's Star         ACIS-S       Apr 13
        Maffei 1               ACIS-I
        A1795                  ACIS-I
        Maffei 1               ACIS-I
        A1795                  ACIS-S       Apr 14
        Radiation Belt
        A1795                  ACIS-I
        A1795                  ACIS-S       Apr 15
        SN2014C                ACIS-S
        A1795                  ACIS-I
        SN2014C                ACIS-S
        A1795                  ACIS-I       Apr 16
        PKS0620-52             ACIS-I
        NGC5728                ACIS-S
        Radiation Belt                      Apr 17
        A1795                  ACIS-I
        XIBOO                  HRC-I
        Maffei 1               ACIS-I
        A1795                  ACIS-I       Apr 18
        Maffei 1               ACIS-I
        A1795                  ACIS-I
        Maffei 1               ACIS-I
        A1795                  ACIS-S       Apr 19
        NGC5728                ACIS-S
        Radiation Belt


All spacecraft subsystems continued to support nominal operations.

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