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Operations CXO Status Report

Friday 2 October 2015 9.00am EDT

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

An aspect camera dark current calibration was performed from the on-board loads on Sep 30. An assessment of the data indicates nominal aspect camera performance and that the number of CCD warm pixels shows a slight drop compared to the expected trend. This is consistent with CCD annealing during the recent safe mode dwell, but further measurements will be needed to rule out an unrelated fluctuation.

A Chandra press release was issued on Sep 28 announcing the appointment of Dr. Ralph Kraft, an astrophysicist at the Smithsonian Astrophysical Observatory and Project Scientist for the Chandra High Resolution Camera (HRC), as the Principal Investigator (PI) for the science instrument. He succeeds the late Dr. Stephen Murray who was the instrument's original PI until his untimely death in August, 2015. For details see: http://chandra.si.edu/press/15_releases/press_092815.html

A Chandra image release was issued on Sep 30 describing observations of the galaxy cluster SPT-CLJ2344-4243, nicknamed the Phoenix Cluster. The Phoenix Cluster holds several records for properties of a galaxy cluster. X-rays from Chandra reveal giant holes, or cavities, in the hot gas that pervades the cluster. Massive filaments of gas and dust surround the X-ray cavities and may play a role in the extreme star formation seen in the cluster. For details see: http://chandra.si.edu/photo/2015/phoenix/

Of note this week was the release on Sep 30 of CXCDS 10.4.2.1 for standard processing, which includes updates to the Telemetry Database and to ACIS CC-mode grating data processing.

The schedule of targets for the next two weeks is shown below and includes observations of PHAT B6, PHAT B14, PHAT B15, PHAT B18, and PHAT B21 coordinated with NuSTAR, and of SDSS J1421+3752 coordinated with ground-based observatories.



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SPT-CLJ0313-5334 ACIS-I Oct 5 Radiation Belts LocalLeoColdCloud ACIS-S Oct 6 Perseuscluster (4 obs) ACIS-I PHATB6 ACIS-I SDSSJ1421+3752 ACIS-S Oct 7 NGC3293 ACIS-I Radiation Belts Oct 8 PHATB14 ACIS-I PHATB21 ACIS-I Oct 9 2MASXJ05054575-23511 ACIS-S Oct 10 AHCep ACIS-I ChandraDeepField-S ACIS-I Radiation Belts CygnusA-EHotspot ACIS-I Oct 11 PHATB15 ACIS-I Mrk1044 ACIS-S Oct 12 SNR0453-669 ACIS-S CXOUJ171405.7-38103 ACIS-S Oct 13 Radiation Belts CygnusA-EHotspot ACIS-I Oct 14 M31bulge ACIS-I Mrk1044 ACIS-S 2FGLJ0842.9-4721 ACIS-I Oct 15 LocalLeoColdCloud ACIS-S CygnusA-EHotspot ACIS-I SDSSJ010013.02+2802 ACIS-S Oct 16 Radiation Belts CygnusA-EHotspot ACIS-I PHATB18 ACIS-I Oct 17 NLTT28469 ACIS-S 2FGLJ1056.0-5853 ACIS-I Oct 18 Mrk1044 ACIS-S 2XMMJ104608.7-59430 ACIS-S SDSSJ102839.11+4500 ACIS-S CygnusA-EHotspot ACIS-I Radiation Belts

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All spacecraft subsystems continued to support nominal operations.

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