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Operations CXO Status Report

Friday 20 December 2013 9.00am EDT

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

A real-time procedure was used to monitor the momentum unload that was executed from the on-board command loads on Dec 18; the unload performance was nominal.

A Chandra image release was issued on Dec 17 describing observations of two binaries that may become AM Canum Venaticorum (or, AM CVn, for short) systems, J075141 and J174140. AM CVn are a rare class of objects where one white dwarf is pulling material from a compact companion star, such as a second white dwarf. As the orbit between these white dwarfs shrink, scientists predict ripples in space-time will be given off. For details see: http://chandra.si.edu/photo/2013/amcvn/

The schedule of targets for the next two weeks is shown below and includes a follow-up observation of GRB 130907A, which was accepted as a Target of Opportunity on Sep 27, observations of SDSS J1537+2716 and SDSS J1534+5034 coordinated with the Hobby-Eberly Telescope and observations of BP Tau coordinated with the KPNO 4-m telescope.



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SDSSJ1537+2716 ACIS-S Dec 22 PSRJ0051+0423 ACIS-S BPTau ACIS-S/LETG Capella ACIS-S/HETG Dec 23 UGC03957EAST ACIS-I G172.88+65.32 ACIS-I Radiation Belts Dec 24 ShapleyB ACIS-I 1FLGJ1018.6-5856 ACIS-I EYHya ACIS-S Dec 25 PSRJ0335+4555 ACIS-S BPTau ACIS-S/LETG NGC7354 ACIS-S Dec 26 M87 ACIS-S Radiation Belts GRB130907A ACIS-S Dec 27 PSRJ0137+1654 ACIS-S BPTau ACIS-S/LETG PSRJ0520-2553 ACIS-S Dec 28 QJ0158-4325 ACIS-S 1FLGJ1018.6-5856 ACIS-I Dec 29 Radiation Belts HAE212 ACIS-S G098.95+24.86 ACIS-I Dec 30 BPTau ACIS-S/LETG PSRJ2156+2618 ACIS-S Dec 31 G125.70+53.85 ACIS-I SDSSJ1534+5034 ACIS-S Radiation Belts Jan 1 COSMOSLegacy ACIS-I PSRJ1334-5839 ACIS-S Jan 2 PSRJ2048+2255 ACIS-S BPTau ACIS-S/LETG WASP52 ACIS-S Jan 3 PSRJ1410-7404 ACIS-S RXJ1131-1231 ACIS-S Radiation Belts G143.24+65.21 ACIS-I Jan 4 COSMOSLegacy ACIS-I G049.33+44.38 ACIS-I Jan 5 G324.49-44.97 ACIS-I ESO445-081 ACIS-I Jan 5

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All spacecraft subsystems continued to support nominal operations.

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