The University of Arizona

One-of-kind...two mirrors in one!

LSST has left the building!

LSST Cast March 2008, Completed May, 2015!
Did You Know?
This telescope will revolutionize the way we look at the sky

"A Perfect Mirror"

View the Mirror Making Process

See how the mirrors for the GMT are created.
Did You Know?
Each of the GMT Mirrors will weigh roughly 10 tons

GMT3 Next Phase: Rear-surface grinding

GMT Telescope -- astronomical engineering at its finest
Did You Know?
The GMT will have a resolving power 10 times greater than the Hubble Space Telescope!

Next Phase is Clean-out

20 tons of E-6 borosilicate glass make up the fourth primary center mirror
Did You Know?



  • Giant Magellan Groundbreaking

    The University of Arizona marks a milestone this week in a years-long project to bring the world's largest telescope to a mountaintop in northern Chile.
    Ground was broken for the Giant Magellan Telescope on...

  • Mirror Lab Renamed in Honor of Richard F. Caris

    The longtime supporter of the UA's astronomy department donated $20 million last December, backing the University's role in building the Giant Magellan Telescope.

    An impactful, $20 million gift supporting the...

  • UA Making Biggest Mirrors for World's Biggest Telescope

    Arizona Public Media July 2015 | Technicians at the University of Arizona are building seven glass mirrors for the Giant Magellan Telescope, an earthbound instrument scheduled to begin...