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

GMT1 Completed!

October marks the end of polishing and testing!
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January marks the start of casting for the next Giant Magellan Telescope (GMT) mirror.
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Massive Monolithic Telescope

This mirror took 6 years to complete from start to finish.

Giant Mirrors to Capture the Universe

What does it take to create the perfect 27-foot parabolic mirrors for the world’s largest telescopes?

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University of Arizona
Major Milestone in Telescope Project

Tucson is known for many things, but our skies are definitely a highlight for astronomy enthusiasts.

Right...

KOLD
UA Mirror Lab works full tilt on huge scope

The 20 tons of glass melting in a spinning furnace under the bleachers of Arizona Stadium represent the second $20...

AZ Daily Star

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....