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Friday 13 March 2009 9.00am EDT
| During the last week Chandra completed the observing schedule as
planned.
A flight software patch was uplinked on Mar 6 to modify the RadMon process K-constants. The patch added the HRC anti-coincidence shield rate as a new channel used to monitor for high radiation. The step was taken to counter degradation in the EPHIN radiation detector due to increasing temperature trends through the mission. A Chandra image release was issued on Mar 10 of the Medusa galaxy (NGC 4194). The composite X-ray and optical (Hubble) image shows a tidal tail formed by a collision between galaxies (Medusa's "hair"), and an black hole seem in X-rays. Recent research on a sample of galaxies including NGC4194 has investigated the correlation between the formation of stars and the production of X-ray binaries. For details see: http://chandra.harvard.edu/photo/2009/medusa/ The schedule of targets for the next week is shown below. |
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Radiation Belts Mar 14 GRB090102 ACIS-S Mar 15 SDSSJ095209.56+21431 ACIS-S ComaCluster ACIS-S GRB090102 ACIS-S Mar 16 SDSSJ094426.96+04295 ACIS-I A1795 ACIS-I A1736 ACIS-I EtaCar ACIS-S/HETG SPT-CL0001-5748 ACIS-I Radiation Belts Mar 17 EtaCar ACIS-S/HETG A1736 ACIS-I Mar 18 HZ43 HRC-S/LETG AEGIS-3 ACIS-I SDSSJ1418+2441 ACIS-S NGC5394/5 ACIS-S NGC3221 ACIS-S Mar 19 0402-362 ACIS-S 1311-270 ACIS-S A1736 ACIS-I A1736 ACIS-I Radiation Belts AEGIS-3 ACIS-I Mar 20 CasACCO HRC-S PSRJ2051-0827 ACIS-S Mar 22
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All spacecraft subsystems continued to support nominal operations.
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Revised: July 08, 2022