News by Date
News by Category
Solar System
Stars
White Dwarfs
Supernovas
Neutron Stars
Black Holes
Milky Way Galaxy
Normal Galaxies
Quasars
Galaxy Clusters
Cosmology/Deep Field
Miscellaneous
Press Resources
Status Reports
Press Advisories
Image Releases
Release Guidelines
Image Use Policy
NASA TV
Biographies/Interviews
Web Shortcuts
Chandra Blog
RSS Feed
Chronicle
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Chandra @ NASA
Visit the Chandra pages at the NASA portal
Image Use
Image Use Policy & Request Form
Guidelines for utilizing images, applets, movies, and animations featured in this Web Site.
Getting Hard Copies of Images
Ways to obtain photos, slides, etc of Chandra images.
Operations CXO Status Report

Friday 7 September 2012 9.00am EDT

During the last week the observing schedule was interrupted due to high radiation associated with solar activity. The loads were halted at 8:57am EDT on Sep 3 through a ground command to execute the SI Safing SCS 107. This ensured that the accumulated radiation dose for ACIS remained below the allowed threshold. All spacecraft actions were nominal. A replanned schedule for resuming science observations was uplinked on Sep 4 with 48.0ks of science loss. Planned observations of SDSS J1227+6803 and SDSS J123915.40+5314 were impacted and will be rescheduled.

Chandra passed through the eleventh, twelfth, and thirteenth eclipses of the season on Sep 1, 4, and 6 respectively, with nominal power and thermal performance. A real-time procedure was executed on Sep 4 to dump and clear a glitch counter that incremented during eclipse exit on Aug 27. The counter increment is expected under certain timing and thermal conditions.

A real-time procedure was executed on Sep 5 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer.

The schedule of targets for the next week is shown below and includes an observation of PNV J06393874+0553520, which was accepted as a Director's Discretionary Time TOO on Aug 29.



------------------------------------------
Radiation Belts Sep 9 M51 ACIS-S Crab ACIS-S Sep 11 Radiation Belts Sep 12 PNVJ06393874+055352 ACIS-S/HETG M31 ACIS-I M51 ACIS-S Radiation Belts Sep 14 PLCKG266.6-27.3 ACIS-I Sep 15 A2667 (2 obs) ACIS-I SPT-CLJ0123-4821 ACIS-I SDSSJ014209.01-0050 ACIS-S Sep 16 PSRJ0734-1559 ACIS-S PLCKG266.6-27.3 ACIS-I

------------------------------------------

All spacecraft subsystems continued to support nominal operations.

Return to Status Reports