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Operations CXO Status Report

Friday 15 August 2014 9.00am EDT

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

Chandra passed through the eleventh, twelfth, and thirteenth eclipses of the season on Aug 8, 11, and 13 respectively, with nominal power and thermal performance. A real-time procedure was executed on Aug 12 to clear a glitch counter that incremented during eclipse exit on Aug 11. The counter increment is expected under certain timing and thermal conditions.

An aspect camera dark current calibration was performed from the on-board loads on Aug 8. An assessment of the data indicates nominal aspect camera performance and that the number of CCD warm pixels is increasing at the expected rate.

A Chandra press release was issued on Aug 14 as a NASA press release describing observations of the supernova SN 2014J in the nearby galaxy M82, one of the closest supernovas discovered in decades. SN 2014J is a Type Ia supernova, an important class of objects used to measure the expansion of the Universe. Chandra data is being used to help determine what caused SN 2014J to explode. The non-detection of X-rays from Chandra gives information about the environment around the star before SN 2014J exploded. For details see:

Starting next week the routine observation scheduling cycle will cover two weeks. The schedule of targets for the next two weeks is shown below and includes an observation of SGR 1935+2154, which was accepted as a Director's Discretionary Time TOO on Aug 7, and an observation of NGC 3256 coordinated with NuSTAR.

M31BHXNe ACIS-I Aug 18 SPT-CLJ2344-4243 ACIS-I EtaCarinae ACIS-S Radiation Belts Aug 19 30Doradus ACIS-I SPT-CLJ2344-4243 ACIS-I Aug 20 NGC613 ACIS-I Aug 21 Radiation Belts 30Doradus ACIS-I Aug 22 EtaCarinae ACIS-S SDSSJ013258.92-1027 ACIS-S Aug 23 2MASXJ23453268-0449 ACIS-S Radiation Belts Aug 24 SwiftJ1822.3-1606 ACIS-S SerpensX-1 ACIS-S/HETG Aug 25 Radiation Belts Aug 27 ESO153-G003 ACIS-S NGC3256 ACIS-S IGRJ11014-6103 ACIS-I Aug 28 SDSSJ134640.79+5228 ACIS-S Aug 29 Radiation Belts SgrA* ACIS-S Aug 30 Antares HRC-I RXJ1416.4+2315Offse ACIS-I SGR1935+2154 ACIS-S Aug 31 RXJ085451.0+621843 ACIS-I SDSSJ232328.01+1405 ACIS-S MACSJ0416.1-2403 ACIS-I


All spacecraft subsystems continued to support nominal operations.

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