Chandra X-Ray Observatory

TOO periods

For TOOs approved in July of a given year for observation in the next Cycle, we allow early triggering if there are no competing programs for the Cycle already underway.

Untriggered TOOs in the Cycle underway are normally cancelled at the Dec 31/Jan 1 transition, except for approved followups of triggered TOOs

Last modified: 01/18/13

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