Via Astronomy Magazine, reporting on the earthquake in Hawaii :
The observatories atop Mauna Kea didn't escape entirely unscathed. The W. M. Keck Observatory, whose twin 10-meter telescopes are the world's largest, canceled all observing through Wednesday night. Some guiding and pointing systems were affected and must be repaired before observing resumes. Technicians reported yesterday that the primary mirrors of both Keck telescopes appear undamaged.Okay, that does it, never again will I complain about having to collimate my 'scope.
File Under: Mauna Kea, Hawaii.