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Operations CXO Status Report

Friday 7 June 2024 9.00am EDT

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

Real-time procedures were executed on Jun 5 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).

An additional real-time procedure was executed on Jun 5 to determine new values for the HRC-I high-voltage ramp-up steps. The new voltage compensates for an expected decrease in HRC-I gain over the course of the mission.

Of note this week was the release on Jun 6 of the CalDB version 4.11.2. The CalDB update includes an HRC-I MEAN QE file set upgrade to version N0015. https://cxc.cfa.harvard.edu/caldb/downloads/Release_notes/CALDB_v4.11.2.html

Also of note this week was the second announcement of the symposium "25 Years of Science with Chandra", to be held in Boston December 3-6, 2024. https://cxc.cfa.harvard.edu/cdo/symposium_2024

The schedule of targets for the next week is shown below and includes an observation of SDSS J163810.07+1151 coordinated with HET, an observation of SS 433 coordinated with Swift and an observation of EP240414a which was accepted as a Director's Discretionary Time Target of Opportunity on May 16.



------------------------------------------
        GAL034.8-00.6IRDC      ACIS-I       Jun  9
        SDSSJ163810.07+1151    ACIS-S       Jun 10
        Radiation Belts
        PS-ELQSJ092642.05-1    ACIS-S
        NGC6242                ACIS-I
        eRASSUJ112636.4-10     HRC-I        Jun 11
        SPT-CLJ2249-5528       ACIS-I
        HZ43                   HRC-S /LETG
        NGC6242                ACIS-I
        PS-ELQSJ092642.05-1    ACIS-S       Jun 12
        WHLJ223301.3+131503    ACIS-I
        V750Ara                ACIS-S/HETG
        Radiation Belts                     Jun 13
        WHLJ223301.3+131503    ACIS-I
        PSR_B1821m24_s10       ACIS-S
        DESJ0322-18            ACIS-S
        CMZMolecularCloud      ACIS-I       Jun 14
        DESJ0322-18            ACIS-S
        CMZMolecularCloud      ACIS-I
        DESJ0322-18            ACIS-S
        XMMJ0.173-0.413        ACIS-I       Jun 15
        SS433                  HRC-I
        A1795                  ACIS-I
        Radiation Belts
        V750Ara                ACIS-S/HETG
        EP240414a              ACIS-S       Jun 16
        eRASSUJ175532.5-503    ACIS-S
        SDSSJ230013.20-0956    ACIS-S
        NGC5477                ACIS-I

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

All spacecraft subsystems continued to support nominal operations.

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