Large Reflector Telescopes

This is a list of the nineteen large reflector telescopes, arranged by diameter, largest first. Telescopes constructed after 1995 have not been included.

Telescope Observatory Location Diameter Year
Established

Keck 1 W. M. Keck Mauna Kea, Hawaii, USA 9.82 m
32.31 ft 1991

Bol'shoi Telescop
Azimutal'nyi Special Astrophysical Mt. Pastukhov, Russia 6.0 m
19.74 ft 1975

George Ellery Hale Palomar Mt. Palomar, California, USA 5.08 m
16.71 ft 1948

Multiple Mirror MMT Mt. Hopkins, Arizona, USA 4.5 m
14.81 ft 1979

William Herschel Roque de Los Muchachos La Palma, Canary Islands 4.2 m
13.82 ft 1987

4-meter Cerro Tololo Inter-American Cerro Tololo, Chile 4 m
13.16 ft 1976

Anglo-Australian Anglo-Australian Siding Spring, New South Wales, Australia 3.89 m
12.8 ft 1975

Nicholas Mayall Kitt Peak National Kitt Peak, Arizona, USA 3.81
12.53 ft 1973

United Kingdom Infrared Joint Astronomy Centre Mauna Loa, Hawaii, USA 3.8 m
12.5 ft 1978

Canada-France-Hawaii Canada-France-Hawaii
Telescope Corporation Mauna Loa, Hawaii, USA 3.58 m
11.78 ft 1979

ESO 3.6-meter European Southern La Silla, Chile 3.57 m
11.75 ft 1977

3.5-meter Observatorio de Calar Alto Calar Alto, Spain 3.5 m
11.52 ft 1984

New Technology European Southern La Silla, Chile 3.5 m
11.52 ft 1989

Starfire Optical Range Kirtland Kirtland AFB, New Mexico, USA 3.5 m
11.52 ft 1994

Astrophysical Research Consortium 3.5-meter Apache Point Sunspot, New Mexico, USA 3.5 m
11.52 ft 1994

Wisconsin-Indiana-Yale-NOAO WIYN Kitt Peak, Arizona, USA 3.5 m
11.52 ft 1994

Donald Shane Lick Mount Hamilton, California, USA 3.05 m
10.03 ft 1959

NASA Infrared Mauna Kea Mauna Kea, Hawaii, USA 3 m
9.87 ft 1979

Telescope	Observatory	Location	Diameter	Year Established
Keck 1	W. M. Keck	Mauna Kea, Hawaii, USA	9.82 m 32.31 ft	1991
Bol'shoi Telescop Azimutal'nyi	Special Astrophysical	Mt. Pastukhov, Russia	6.0 m 19.74 ft	1975
George Ellery Hale	Palomar	Mt. Palomar, California, USA	5.08 m 16.71 ft	1948
Multiple Mirror	MMT	Mt. Hopkins, Arizona, USA	4.5 m 14.81 ft	1979
William Herschel	Roque de Los Muchachos	La Palma, Canary Islands	4.2 m 13.82 ft	1987
4-meter	Cerro Tololo Inter-American	Cerro Tololo, Chile	4 m 13.16 ft	1976
Anglo-Australian	Anglo-Australian	Siding Spring, New South Wales, Australia	3.89 m 12.8 ft	1975
Nicholas Mayall	Kitt Peak National	Kitt Peak, Arizona, USA	3.81 12.53 ft	1973
United Kingdom Infrared	Joint Astronomy Centre	Mauna Loa, Hawaii, USA	3.8 m 12.5 ft	1978
Canada-France-Hawaii	Canada-France-Hawaii Telescope Corporation	Mauna Loa, Hawaii, USA	3.58 m 11.78 ft	1979
ESO 3.6-meter	European Southern	La Silla, Chile	3.57 m 11.75 ft	1977
3.5-meter	Observatorio de Calar Alto	Calar Alto, Spain	3.5 m 11.52 ft	1984
New Technology	European Southern	La Silla, Chile	3.5 m 11.52 ft	1989
Starfire Optical Range	Kirtland	Kirtland AFB, New Mexico, USA	3.5 m 11.52 ft	1994
Astrophysical Research Consortium 3.5-meter	Apache Point	Sunspot, New Mexico, USA	3.5 m 11.52 ft	1994
Wisconsin-Indiana-Yale-NOAO	WIYN	Kitt Peak, Arizona, USA	3.5 m 11.52 ft	1994
Donald Shane	Lick	Mount Hamilton, California, USA	3.05 m 10.03 ft	1959
NASA Infrared	Mauna Kea	Mauna Kea, Hawaii, USA	3 m 9.87 ft	1979