The University of Arizona

The glass has arrived for the new mirror!

A New GMT Casting

January marks the start of casting for the next Giant Magellan Telescope (GMT) mirror.
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Did You Know?
Casting calls for 20 tons of Ohara E-6 borosilicate glass!

News

Announcements

  • Mirror Casting Event for the GMT

    On January 14, 2012, the second 8.4-meter (27.6 ft) diameter mirror for the Giant Magellan Telescope (GMT) will be cast inside a rotating furnace at the UA’s Steward Observatory Mirror Lab underneath the campus football stadium....