The University of Arizona Mirror Lab grinds the first Giant Magellan Telescope mirror to near-final shape. The Mirror Lab spin-cast the first Giant Magellan Telescope 20-ton mirror blank in July 2005.
No off-axis mirror of this size has ever been made before. An off-axis mirror focuses light at an angle away from its axis, unlike a symmetrical mirror that focuses light along its axis.
March 27, 2012 11:28 AM PDT
Photo by: Lori Stiles/University of Arizona
| Caption by: James Martin
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