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Operations CXO Status Report

Friday 4 July 2025 9.00am EDT

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

Real-time procedures were executed on Jul 2 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 press release was issued on Jun 30 describing observations of the Bullet Cluster using Webb and Chandra data. The new Webb observations refine the mass of the observable galaxies by using more lensed background galaxies than previously possible. Viewed as a whole, the new measurements significantly refine what we know about how mass is spread throughout the Bullet Cluster. One of the two component subclusters in this post-collision cluster has an asymmetric elongated area of mass along the eastern edge, which is a clue pointing to previous mergers in that cluster. For details, see: https://chandra.harvard.edu/press/25_releases/press_063025.html

The schedule of targets for the next week is shown below.



------------------------------------------
        Radiation Belts                     Jul  6
        [JDW2009]G359.55+0.    ACIS-I       Jul  7
        NGC4579                ACIS-S/HETG
        [JDW2009]G359.55+0.    ACIS-I
        A1550                  ACIS-I
        SNRG15.9+0.2           ACIS-S       Jul  8
        A1550                  ACIS-I
        SNRG15.9+0.2           ACIS-S
        G29-38                 HRC-I
        NGC5134                ACIS-S
        Radiation Belts                     Jul  9
        SDSSJ0100+2802         ACIS-I
        MACSJ2020.3-2225       ACIS-I       Jul 10
        SDSSJ0100+2802         ACIS-I
        MACSJ2020.3-2225       ACIS-I
        Perseuscluster         ACIS-I
        NGC6814                ACIS-S
        Perseuscluster         ACIS-I
        XTEJ1855-026           ACIS-S/HETG  Jul 11
        A1795                  ACIS-S
        XTEJ1855-026           ACIS-S/HETG
        ACT-CL_J0034.4+0225    ACIS-S
        PSZ2G358.94-70.57      ACIS-I
        Radiation Belts                     Jul 12
        ACT-CL_J0034.4+0225    ACIS-S
        WR38a                  ACIS-I
        GAIADR240723625426     ACIS-S       Jul 13
        RXCJ1314.4-2515        ACIS-I
        GAIADR240723625426     ACIS-S

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

All spacecraft subsystems continued to support nominal operations.

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