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Operations CXO Status Report

Friday 22 December 2006 9.00am EDT

Observing loads were restarted at 5.30pm on Dec 14 following an extended period of high solar activity. Observations that were impacted due to the solar events will be rescheduled in later loads.

A real-time procedure was conducted on Dec 16 to lower the Aspect Camera CCD temperature from -18 to -19 deg C. This is the fourth of five 1 deg C step reductions planned to mitigate the increasing number of warm pixels.

A real-time procedure was conducted on Dec 18 to uplink an update to the on-board gyro scale-factor and alignment matrix. Following the uplink, a series of test maneuvers were executed from the daily load to assess the new values. The performance of the pointing system matched model predictions extremely well.

A Chandra image release was issued on Dec 18 showing the star forming complex W3 Main located in the star forming region, W3. The Chandra image shows hundreds of X-ray sources in the central region of W3 Main. These bright point-like objects are an extensive population of several hundred young stars, many of which were not found in earlier infrared studies. For details, see: http://chandra.harvard.edu/photo/2006/w3/

The Mission Planning team worked hard to develop a 2 week schedule to cover the holiday period as shown below. The schedule includes the next ten of a series of 36 tiled observations that will comprise the 0.7 square deg, 1.8 Ms, COSMOS survey.

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NGC2563-P14 ACIS-I Dec 25 HBC 358/59 ACIS-I PSR J2021+3651 ACIS-S Radiation Belts Dec 26 RXC J1109.7+214 ACIS-S UGC 4422 ACIS-S Dec 27 MS0839.9+2938 ACIS-I NGC 3073 ACIS-S Abell 695 ACIS-S C-COSMOS1-2 ACIS-I Dec 28 Radiation Belts PSR J2021+3651 ACIS-S Dec 29 A665 ACIS-I Dec 30 Abell 695 ACIS-S C-COSMOS1-3 ACIS-I C-COSMOS3-3 ACIS-I Dec 31 Radiation Belts RXJ1131-1231 ACIS-S Jan 1 C-COSMOS3-3 ACIS-I UGC 3059 ACIS-S 3C454.3 ACIS-S/HETG Abell 520 ACIS-I MS0906.5+1110 ACIS-I SDSS J0928+1848 ACIS-S C-COSMOS3-5 ACIS-I C-COSMOS3-6 ACIS-I Jan 2 Radiation Belts Jan 3 M87 ACIS-S IGR J14561-3738 ACIS-S C-COSMOS4-3 ACIS-I Jan 4 C-COSMOS4-4 ACIS-I C-COSMOS4-5 ACIS-I Jan 5 Radiation Belts Jan 6 SDSSJ090332.77+01123 ACIS-S 7C1023+3604 ACIS-S IRAS F10173+0828 ACIS-S Jan 7 C-COSMOS4-6 ACIS-I IGR J07506-1547 HRC-I

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The next report is planned for Jan 5 following the holiday. A Happy Holiday and New Year to everyone from the Chandra Team!

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