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Operations CXO Status Report

Friday 20 September 2019 9.00am EDT

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

Real-time procedures were executed on Sep 13 to turn off gyros A1 and B2 and SPE-B in order to reduce the temperature of the IRU baseplates. These units had been activated on Sep 7 to evaluate gyro performance. Real-time procedures were executed Sep 16 to perform full-frame dark current readouts of the Aspect Camera Assembly CCD.

Of note this week was the release on Sep 13 of CALDB 4.8.4.1. This update includes corrections to ACIS time-dependent gain corrections for the period May 2019 through Sep 2019. For details see: http://cxc.cfa.harvard.edu/caldb4/downloads/Release_notes/CALDB_v4.8.4.1.html.

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

------------------------------------------
       Radiation Belts                     Sep 23
        PSZ2G181.06+48.47      ACIS-I
        Radiation Belts                     Sep 24
        PSRJ1016-5857          ACIS-I
        CL0152-13              ACIS-I       Sep 25
        N132D                  ACIS-S       Sep 26
        CL0152-13              ACIS-I
        Radiation Belts
        Abell1156              ACIS-I       Sep 27
        SN2017hcc              ACIS-S
        N132D                  ACIS-S
        XLSSC122               ACIS-I       Sep 28
        N132D                  ACIS-S
        SDSSJ0825+1155         ACIS-S
        XLSSC122               ACIS-I
        Radiation Belts                     Sep 29

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

All spacecraft subsystems continued to support nominal operations.

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