Mirror Castings

Size¹

Focal Ratio²

Casting Date³

Telescope/Observatory

1.8

1.0

1985

Vatican Advanced Technology Telescope

1.2

1.9

1987

Smithsonian Astrophysical Observatory

3.5

1.75

1988

Astrophysical Research Consortium

3.5

1.75

1988

Wisconsin-Indiana-Yale-NOAO

3.5

1.5

1989

US Air Force Starfire Optical Range

6.5

1.25

1992

Multiple Mirror Telescope Conversion

6.5

1.25

1994

Magellan I, Las Campanas Observatory

8.4

1.14

1997

Large Binocular Telescope I

6.5

1.25

1998

Magellan II, Las Campanas Observatory

8.4

1.14

2000

Large Binocular Telescope II

6.5

1.25

2002

Lockheed Martin Corporation

8.4

2.14*

2005

Giant Magellan Telescope I

3.8

3.4

2006

Test Optic, Mirror Lab

8.4

1.2

2007

Large Synoptic Survey Telescope

6.5

1.25

2009

San Pedro Màtir Observatory

1.2

1.9

2010

Smithsonian Astrophysical Observatory

8.4

2.14*

2012

Giant Magellan Telescope II

8.4

2.14*

2013

Giant Magellan Telescope III

¹Meters ²Focal length/diameter ³Casting date *Off-axis segment