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Operations CXO Status Report

Friday 9 July 2021 9.00am EDT

During the last week the observing schedule was replanned to incorporate an observation of TCP J18573095+165339, which was accepted as a Director's Discretionary Time Target of Opportunity on Jul 3. Time from scheduled observations of hetej1900.1-2455 and MRK417 was impacted by the replan and will be rescheduled in a future week.

Real-time procedures were executed on Jul 7 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer and to perform a diagnostic dump of the Control Processing Electronics (CPE).

A Chandra image release was issued on Jul 2 describing observations a galaxy cluster acting like a passenger on what astronomers are calling an "intergalactic highway." The cluster is known as the "Northern Clump" and it is located about 690 million light years from Earth. Previously, scientists discovered an enormous filament, a thin strip of very hot gas that stretched for at least 50 million light years. A new study found evidence that the Northern Clump is traveling along this filament, similar to how a car moves along the interstate. For details see:

The schedule of targets for the next week is shown below and includes an observation of MAXI J1848-015, which was accepted as a Target of Opportunity on Jun 21 and is coordinated with NRAO VLA, observations of GRS 1915+105 coordinated with NICER and NuSTAR, and observations of mrk817 coordinated with XMM and NuSTAR.

        H1821+643              HRC-S /LETG  Jul 11
        MAXIJ1848-015          ACIS-S       Jul 12
        mrk817                 ACIS-S/HETG
        CIZAJ1809.0-0414       ACIS-I       Jul 13
        Radiation Belts
        M51                    ACIS-S
        HEPG029.280+11.269     ACIS-I       Jul 14
        GRS1915+105            ACIS-S/HETG
        mrk817                 ACIS-S/HETG
        hetej1900.1-2455       ACIS-S       Jul 15
        AntliaClusterSE        ACIS-I
        GRS1915+105            ACIS-S/HETG
        Radiation Belts                     Jul 16
        2MASSJ02154618-1814    ACIS-S
        Jupiter                HRC-I
        NGTS11                 ACIS-S       Jul 17
        J114306.5+680717.8     ACIS-S
        Jupiter                HRC-I
        mrk817                 ACIS-S/HETG
        hetej1900.1-2455       ACIS-S       Jul 18
        Radiation Belts


All spacecraft subsystems continued to support nominal operations.

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