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Operations CXO Status Report

Friday 24 May 2024 9.00am EDT

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

A real-time procedure was executed on May 17 to uplink a flight software patch that updates several Telescope subsystems K-Constants to prevent grating insertion/retraction movement failures. Additional real-time procedures were executed on May 18-19 to dump OBC-A and -B memory as a follow-up to the patch. The dump will be used to update the baseline memory images maintained on the ground.

A Chandra press release was issued on May 22 describing observations from NASA’s Chandra X-ray Observatory and the NSF’s Very Large Array that imply that jets from from black holes can change directions. By examining data from 16 galaxies with central black holes, a team was able to chart the directions of the jets both today and in the past. About a third of the jets appear to have significantly changed directions over the course of about 10 million years or less. X-ray data reveal cavities in the hot gas that marks where the jets used to point, while radio data show where they currently are aiming. For details see:

The schedule of targets for the next week is shown below and includes an observation of SZ Cha coordinated with HST and JWST, and an observation of SS 433 coordinated with Swift.

        SZCha                  ACIS-S       May 27
        NGC6204                ACIS-I
        E0102-72.3             ACIS-S
        XMMJ0.173-0.413        ACIS-I
        SPT-CLJ2233-5552       ACIS-I
        Radiation Belts                     May 28
        SDSSJ110409.96+4345    ACIS-S
        A1795                  ACIS-S
        SNRG21.5-0.9           HRC-I
        SPT-CLJ2233-5552       ACIS-I
        XMMJ0.173-0.413        ACIS-I       May 29
        Abell2744              ACIS-I
        XMMJ0.173-0.413        ACIS-I
        Abell2744              ACIS-I
        NGC6204                ACIS-I       May 30
        ACT-CLJ0442.6-5905     ACIS-S
        NGC6204                ACIS-I
        Radiation Belts                     May 31
        SDSSJ081558.35+1540    ACIS-S
        2RXSJ152927.6-28503    ACIS-S
        2MASSJ08194059+0823    ACIS-I
        A1795                  ACIS-S
        SS433                  HRC-I
        ACT-CLJ0442.6-5905     ACIS-S
        SwiftJ1728.9-3613      ACIS-I       Jun  1
        ACT-CLJ0442.6-5905     ACIS-S
        NGC6204                ACIS-I
        PSZ2G346.36-77.71      ACIS-I
        XMMJ0.173-0.413        ACIS-I
        1E2215.7-0404/1E       ACIS-I
        XMMJ0.173-0.413        ACIS-I       Jun  2
        Radiation Belts
        XMMJ0.173-0.413        ACIS-I
        UGC685                 ACIS-I


All spacecraft subsystems continued to support nominal operations.

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