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Operations CXO Status Report

Friday 29 June 2018 9.00am EDT

During the last week the observing schedule was replanned to incorporate an observation of AT18cow, which was accepted as a Director's Discretionary Time Target of Opportunity on Jun 21. Loads for the replanned schedule were uplinked on Jun 23. Scheduled observations of PSRJ1048+2339 and CDWFS were impacted by the replan and will be rescheduled in future weeks. Chandra passed through the third, fourth, and fifth eclipses of the season on Jun 23, 26, and 28 respectively, with nominal power and thermal performance. Of note this week was the release on Jun 28 of CalDB version 4.7.9. The CALDB update includes a new version of the ACIS contamination model and updates to the HRC-I and HRC-S time-dependent quantum efficiency corrections. For details see: http://cxc.harvard.edu/caldb/downloads/Release_notes/CALDB_v4.7.9.html The schedule of targets for the next week is shown below and includes an observation of 3C273 coordinated with XMM and NuSTAR.

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Radiation Belts zetaPup ACIS-S/HETG 1RXSJ101335.9-135108 ACIS-I Jul 2 G350.1-0.3 ACIS-S Vega HRC-I Vega HRC-S Vega HRC-S Vega HRC-S Vega HRC-S UGC05629 ACIS-S zetaPup ACIS-S/HETG G344.7-0.1 ACIS-I Jul 3 zetaPup ACIS-S/HETG Radiation Belts Jul 4 G350.1-0.3 ACIS-S 3C273 ACIS-S/HETG G350.1-0.3 ACIS-S Jul 5 VHSJ2101-5943 ACIS-S zetaPup ACIS-S/HETG G344.7-0.1 ACIS-I zetaPup ACIS-S/HETG Jul 6 Radiation Belts Jul 7 zetaPup ACIS-S/HETG 3FGLJ1104.9-6036 ACIS-I G350.1-0.3 ACIS-S zetaPup ACIS-S/HETG Jul 8 G350.1-0.3 ACIS-S Radiation Belts Jul 9

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All spacecraft subsystems continued to support nominal operations.

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