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Operations CXO Status Report

Friday 21 February 2025 9.00am EST

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

A real-time procedure was executed on Feb 14 to uplink a flight software patch that reduces the duration of LETG short moves from 2 minor cycles to 1 minor cycle, and increases the number of allowed short moves from 24 to 48. With this patch in place, LETG science observations have resumed in the weekly loads. Additional real-time procedures were executed on Feb 15-17 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.

Chandra passed through the 13th and 14th eclipses of the season on Feb 16 and 19 respectively, with nominal power and thermal performance.

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



------------------------------------------
        Radiation Belts                     Feb 23
        NGC5548                HRC-S /LETG
        PSOJ170.8326+20.208    ACIS-S       Feb 24
        IGRJ22516+5610         ACIS-S
        Radiation Belts
        Abell370               ACIS-I
        CenterofCOSMOS-Web     ACIS-I       Feb 25
        Abell370               ACIS-I
        CenterofCOSMOS-Web     ACIS-I
        Perseuscluster         ACIS-I
        NGC5548                HRC-S /LETG
        OrionNebulaCluster     ACIS-I       Feb 26
        CenterofCOSMOS-Web     ACIS-I
        ACT-CLJ0454.7-2016     ACIS-S
        NGC5548                HRC-S /LETG
        Perseuscluster         ACIS-I
        NGC2775                ACIS-S
        SDSSJ112306.96+3028    ACIS-S       Feb 27
        Radiation Belts
        SDSSJ095322.22+2026    ACIS-S
        Abell370               ACIS-I
        NGC5548                HRC-S /LETG
        PSOJ170.8326+20.208    ACIS-S       Feb 28
        PSRJ1809-2332          ACIS-I
        PSOJ170.8326+20.208    ACIS-S
        Perseuscluster         ACIS-I
        NGC5548                HRC-S /LETG
        NGC3059                ACIS-S       Mar  1
        SDSSJ095322.22+2026    ACIS-S
        DQTauperiastron3       ACIS-I
        B2.30420+39A           ACIS-S
        DQTauperiastron3       ACIS-I
        Radiation Belts                     Mar  2
        DQTauperiastron3       ACIS-I
        NGC2775                ACIS-S
        NGC3059                ACIS-S
        DQTauperiastron3       ACIS-I
        NGC3059                ACIS-S
        DQTauperiastron3       ACIS-I
        NGC2775                ACIS-S

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

All spacecraft subsystems continued to support nominal operations.

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