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Operations CXO Status Report

Friday 28 January 2005 9.00am EST

Loads were resumed at 1:45am on Jan 23 following the major solar event that stopped loads on Jan 16. A total of 363Ks of science was lost due to the event, the largest impact for a solar event so far in the mission. Target observations impacted by the event will be rescheduled in a later load.

Chandra passed through the final eclipses of the 2005 winter season on Jan 22 and Jan 25 with nominal power and thermal performance. A real-time procedure was completed on Jan 27 to disable SCS 29 due to the end of the eclipse season.

A Chandra image release was made on Jan 25 describing observations of the galaxy UGC 6697, located in the galaxy cluster Abell 1367. The combined Chandra and optical image shows features that suggest that the cluster gas density is at just the right value to trigger star formation by compressing clouds of cool gas in the galaxy. For details see: http://chandra.harvard.edu/photo/2005/u6697/

The schedule of targets for last week following resumption of loads and for next week is shown below, and includes an observation of SDSS J0840+5624 coordinated with ground observatories.

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RX J0720.4-3125 HRC-S/LETG Jan 23 M87 ACIS-S MACSJ1006.9+3200 ACIS-I Jan 24 The Crab Nebula ACIS-S/HETG SDSS J0002+2550 ACIS-S RCW103 ACIS-I Radiation Belts RGBJ2318+3048 ACIS-S Jan 25 MS30.7 ACIS-S V1118 Ori ACIS-S Jan 26 Abell 4059 ACIS-S Radiation Belts Jan 27 M31 HRC-I Jan 28 cl0956+4107 ACIS-I M31 HRC-I SDSS J091836.46+59 ACIS-S Jan 29 HCG 40 ACIS-S NGC 5408 ULX ACIS-S NGC2986 ACIS-S HCG 40 ACIS-S Radiation Belts 1E 0035.4-7230 ACIS-S Jan 30 PKS 1055+201 ACIS-S V1187 Sco HRC-S/LETG Jan 31 M87 ACIS-I Radiation Belts Feb 1 HZ43 HRC-S/LETG Feb 2 Betelgeuse ACIS-I Betelgeuse ACIS-S SDSS J011651.54-10 ACIS-S Betelgeuse HRC-I Betelgeuse (4 obs) HRC-S NGC3078 ACIS-I A1413 ACIS-I NGC4278 ACIS-S Feb 3 SDSS J0840+5624 ACIS-S NGC2340 ACIS-S NGC2329 ACIS-I Feb 4 Radiation Belts LBQS 1203+1530 ACIS-S Feb 5 Abell 1240 ACIS-I NGC 3412 ACIS-S Feb 6 IGR J00291+5934 ACIS-S 3EG J2020+4017 ACIS-I

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All spacecraft subsystems continued to support nominal operations.

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