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Operations CXO Status Report

Friday 1 August 2025 9.00am EDT

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

Preparations were completed for the summer 2025 eclipse season; the season contains nine eclipses and runs from Jul 30 to Aug 20. Real-time procedures were executed on Jul 29 to prepare for the first eclipse: one to activate SCS 29 and one to dump and clear the EPS glitch counters. Chandra passed through the first eclipse of the season on Jul 30, with nominal power and thermal performance.

The schedule of targets for the next week is shown below and includes an observation of EP250702a, which was accepted as a Director's Discretionary Time Target of Opportunity on Jul 15, and an observation of Sgr A* coordinated with JWST.



------------------------------------------
        1E2215.7-0404/1E       ACIS-I       Aug  4
        NGC4261                HRC-I
        NGC4579                ACIS-S/HETG
        1E2215.7-0404/1E       ACIS-I
        Radiation Belts                     Aug  5
        SgrA*                  ACIS-S
        HE1353-1917            HRC-I
        1E2215.7-0404/1E       ACIS-I
        NGC4579                ACIS-S/HETG
        NGC7314                ACIS-S/HETG  Aug  6
        WISEJ025942.86-1635    ACIS-S
        NGC7314                ACIS-S/HETG
        Abell370               ACIS-I       Aug  7
        Radiation Belts
        SgrA*                  ACIS-S
        WISEAJ220544.23-372    ACIS-S       Aug  8
        NGC2287                HRC-I
        Abell370               ACIS-I
        2RXSJ214502.3-24290    ACIS-S
        ALPHACEN               HRC-I        Aug  9
        EP250702a              ACIS-S
        eRASSUJ122150.6-193    ACIS-S
        SgrA*                  ACIS-S
        Radiation Belts                     Aug 10
        1E2215.7-0404/1E       ACIS-I

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

All spacecraft subsystems continued to support nominal operations.

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