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Operations CXO Status Report

Friday 10 November 2017 9.00am EDT

The Chandra plan of observations released last week will be interrupted tomorrow to incorporate an observation of SwiftJ0243.6+6124, which was accepted as a Director's Discretionary Time Target of Opportunity on Nov 8. A scheduled observation of CDWFS was impacted by the replan and will be rescheduled in a future week.

A real-time procedure was executed on Nov 8 to uplink a flight software patch that increases the HRMA strut maximum temperature thermal health-check threshold. This update is in response to increasing temperatures due to degradation of the Observatory's thermal covers during the mission and will reduce the possibility of an unnecessary swap to redundant thermal control hardware due to environmental heating. Additional real-time procedures were executed on Nov 8-9 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 image release was issued on Nov 6 describing observations of Jupiter coordinated with the Juno mission. New X-ray observations show the auroras on Jupiter behave differently at each pole. The X-ray emission at Jupiter's south pole consistently pulsed every 11 minutes, but the X-rays seen from the north pole were erratic, increasing and decreasing in brightness seemingly independent of the emission from the south pole. For details see:

The schedule of targets for the next week is shown below and includes an observation of HD 13831 which is coordinated with the VLA, an observation of SN2017gas, which was accepted as a Target of Opportunity on Oct 23 and is coordinated with NuStar, observations of Uranus which were accepted as a Director's Discretionary Time Target of Opportunity on Oct 29 and are coordinated with Hubble, the VLT and Gemini, and an observation of Swift J0243.6+6124, which was accepted as a Director's Discretionary Time Target of Opportunity on Nov 8.

Radiation Belts NGC1275 ACIS-S/HETG SwiftJ0243.6+6124 ACIS-S/HETG Nov 11 Uranus HRC-I CDWFS ACIS-I Uranus HRC-I Nov 12 CDWFS ACIS-I Radiation Belts Nov 13 SN2017gas ACIS-S ACT-CLJ0154.4-0321 ACIS-I SPT-CLJ2355-5156 ACIS-I Nov 14 NGC6482 ACIS-S HD13831 ACIS-S MACSJ0451.9+0006 ACIS-I NGC3221 ACIS-I Nov 15 HZ43 HRC-I /LETG PS11ad ACIS-S Radiation Belts Nov 16 HZ43 HRC-S /LETG XXL-N0058 ACIS-S NGC2243 ACIS-S RXJ1131-1231 ACIS-S Nov 17 Tycho'sSupernovaRe ACIS-S/HETG XXL-N0339 ACIS-S Radiation Belts Nov 18 A1795 ACIS-S Tycho'sSupernovaRe ACIS-S/HETG Nov 19


All spacecraft subsystems continued to support nominal operations.

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