The Steward Observatory Mirror Lab is located in Tucson, Arizona, and is known for its advanced technology in producing large telescope mirrors. It specializes in casting and polishing mirrors for some of the world's most powerful telescopes, including those used in the Large Binocular Telescope and the Giant Magellan Telescope. Founded in 1985, the lab combines engineering and scientific expertise to create mirrors that enhance astronomical observations. The facility uses a unique spinning method to shape glass into precise optical surfaces, allowing for improved light collection and clarity in astronomical imaging.