Below is a table of our different mirror castings.

MIRROR CASTINGS      
Size1 Focal Ratio2 Casting Date3 Telescope/Observatory
1.8 1.0 6/17/1985 Vatican Advanced Technology Telescope
1.2 1.9 11/11/1987 Smithsonian Astrophysical Observatory
3.5 1.75 4/26/1988 Astrophysical Research Consortium
3.5 1.75 12/9/1988 Wisconsin-Indiana-Yale-NOAO
3.5 1.5 6/28/1989 US Air Force Starfire Optical Range
6.5 1.25 4/3/1992 Multiple Mirror Telescope Conversion
6.5 1.25 2/3/1994 Magellan I, Las Campanas Observatory
8.4 1.14 6/10/1997 Large Binocular Telescope I
6.5 1.25 9/15/1998 Magellan II, Las Campanas Observatory
8.4 1.14 5/20/2000 Large Binocular Telescope II
6.5 1.25 4/4/2002 Lockheed Martin Corporation
8.4 2.14* 7/23/2005 Giant Magellan Telescope I
3.8 3.4 8/28/2006 Test Optic, Mirror Lab
8.4 1.2 3/29/2007 Large Synoptic Survey Telescope
6.5 1.25 8/26/2009 San Pedro Màtir Observatory
1.2 1.9 9/10/2010 Smithsonian Astrophysical Observatory
8.4 2.14* 1/15/2012 Giant Magellan Telescope II
8.4 2.14* 8/25/2013 Giant Magellan Telescope III
8.4 2.14* 9/18/2015 Giant Magellan Telescope IV (center mirror)
8.4 2.14* 11/04/2017 Giant Magellan Telescope V
8.4 2.14* 03/06/2021 Giant Magellan Telescope VI
1Meters 2Focal length/diameter 3Casting date *Off-axis segment