Here is a list of the largest optical reflecting telescopes sorted by mirror diameter.
Name | Diameter | Country | Site | Built |
GTC | 10.4 m | Spain | Canary Islands | 2005 |
Keck 1 | 9.8 m | USA | Mauna Kea, Hawaii | 1993 |
Keck 2 | 9.8 m | USA | Mauna Kea, Hawaii | 1996 |
Hobby-Eberly Telescope (HEB) | 9.2 m | USA, Germany | Mt Fowlkes, USA | 1997 |
Large Binocular Telescope (LBT) | 2x8.4 m | Italy, USA, Germany | Mt Graham, USA | 2004 |
Subaru (NLT) | 8.3 m | Japan | Mauna Kea, Hawaii | 1999 |
VLT 1 (Antu) | 8.2 m | Europe | Cerro Paranal, Chile | 1998 |
VLT 2 (Kueyen) | 8.2 m | Europe | Cerro Paranal, Chile | 1999 |
VLT 3 (Melipal) | 8.2 m | Europe | Cerro Paranal, Chile | 2000 |
VLT 4 (Yepun) | 8.2 m | Europe | Cerro Paranal, Chile | 2001 |
Gemini North | 8.1 m | USA, UK, Canada, Chile, Australia, Argentina, Brazil | Mauna Kea, Hawaii | 1999 |
Gemini South | 8.1 m | USA, UK, Canada, Chile, Australia, Argentina, Brazil | Cerro Pachón, Chile | 2001 |
Multiple Mirror Telescope (MMT) | 6.5 m | USA | Mt Hopkins, USA | 1999 |
Magellan | 6.5 m | USA | Las Campanas, Chile | 1998 |
BTA-6 | 6 m | Russia | Mt Pastoukhov, Caucasus | 1976 |
LZT | 6 m | Canada, France | Maple Ridge, British Columbia | 2003 |
Hale Telescope | 5 m | USA | Mt Palomar, USA | 1948 |
William Herschel Telescope | 4.2 m | UK, Netherlands, Spain | Canary Islands | 1987 |
SOAR | 4.2 m | USA, Brazil | 2002 |