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