Primary Mirrors

1 /  University of Arizona Richard F. Caris Mirror Lab staff member cleaning refractory material from the back surface of the seventh and final mirror. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation. 2 /  University of Arizona Richard F. Caris Mirror Lab staff members placing chunks of glass into the mirror mold for casting the seventh and final mirror. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation. 3 /  Primary mirror segment six lifted by crane from furnace floor at the University of Arizona Richard F. Caris Mirror Lab, August 2021. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation 4 /  University of Arizona Richard F. Caris Mirror Lab staff members Damon Jackson (left) and Conrad Vogel (right) in the foreground looking up at the back of primary mirror segment five, April 2019. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation. CC BY-NC-ND 4.0. 5 /  University of Arizona Richard F. Caris Mirror Lab staff member cleaning refractory material from the back surface of the seventh and final mirror. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation. 6 /  Furnace lid closing for casting primary mirror segment five at University of Arizona Richard F. Caris Mirror Lab, November 2017. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation 7 /  Primary mirror segment five turned vertically on its side at the University of Arizona Richard F. Caris Mirror Lab, April 2018. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation 8 /  Relocation of primary mirror segment one from the University of Arizona Richard F. Caris Mirror Lab to a storage facility near the Tucson Airport, September 2017. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation 9 /  Lifting fixture bonded to primary mirror segment front surface prior to removal from furnace floor at the University of Arizona Richard F. Caris Mirror Lab, March 2018. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation 10 /  Primary mirror segment undergoing polishing at the University of Arizona Richard F. Caris Mirror Lab, March 2018. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation 11 /  University of Arizona Richard F. Caris Mirror Lab staff member placing a chunk of Ohara E6 low expansion glass into a mold for casting primary mirror segment five, October 2017. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation 12 /  University of Arizona Richard F. Caris Mirror Lab staff member placing chunks of Ohara E6 low expansion glass into a mold for casting primary mirror segment five, October 2017. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation 13 /  Mirror Casting Manager Randy Lutz vacuuming dust from the furnace off of the surface of primary mirror segment five at the University of Arizona Richard F. Caris Mirror Lab, February 2018. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation 14 /  Furnace spinning during primary mirror segment five’s annealing process at the University of Arizona Richard F. Caris Mirror Lab. Image credit: Damien Jemison, Giant Magellan Telescope – GMTO Corporation