The University of Arizona

The world’s most challenging large astronomical mirror ever made!

GMT1 Completed!

October marks the end of polishing and testing!
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Did You Know?
GMT Telescope will consist of seven 8.4 meter mirrors!

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

  • GMT2 Mirror Update

    September, 2012  the Giant Magellen Telescope Mirror 2 (GMT2) has completed the process of cleaning out the 1700 hexagonal columns made of special refractory material, which create the final honeycomb shape. This material can...

  • 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....