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This is a list of large optical telescopes. For telescopes larger than 3 meters in aperture see List of largest optical reflecting telescopes. This list combines large or expensive reflecting telescopes from any era, as what constitutes famous reflector has changed over time. In 1900 a 1-meter reflector would be among the largest in the world, but by 2000, would be relatively common for professional observatories.
Large reflectors and catadioptric
See List of largest optical reflecting telescopes for continuation of list to larger scopes
Name | Image | Aperture | Mirror type |
Nationality / Sponsors | Site | Built |
---|---|---|---|---|---|---|
Harlan J. Smith Telescope | 2.72 m (107 in) | Single | USA | McDonald Observatory, Texas, USA | 1969 | |
UBC-Laval LMT | 2.65 m (104 in) | Liquid | Canada | Vancouver, British Columbia, Canada | 1992–2016[1] | |
Shajn 2.6m "Crimean 102 in."[2] |
2.64 m (104 in) | Single | Crimean Astrophysical Obs., Russia/Ukraine | 1961 | ||
VLT Survey Telescope (VST)[3] | 2.61 m (102.8 in) | Single | Italy + ESO countries | Paranal Observatory, Antofagasta Region, Chile | 2007 | |
BAO 2.6 | 2.6 m (102 in) | Single | Byurakan Astrophysical Obs., Mt. Aragatz, Armenia | 1976 | ||
Nordic Optical Telescope (NOT) | 2.56 m (101 in) | Single | Denmark, Sweden, Iceland, Norway, Finland | ORM, Canary Islands, Spain | 1988 | |
Javalambre Survey Telescope (JAST/T250)[4] | 2.55 m (100 in) | Single | International | Javalambre Observatory, Spain (Z32) | TBA | |
Isaac Newton Telescope (INT) | 2.54 m (100 in) | Single | UK | ORM, Canary Islands, Spain (RGO, England, UK until '79) | 1984 | |
Irenee du Pont Telescope | 2.54 m (100 in) | Single | USA | Las Campanas Observatory, Coquimbo Region, Chile | 1976 | |
Hooker 100-Inch Telescope | 2.54 m (100 in) | Single | USA | Mt. Wilson Observatory, California, USA | 1917 | |
Kawkasskaja gornaja observatory GAISCH MGU | 2.5 m (98.4 in) | Single | Russia | Caucasian mountain observatory , Russia | 2014 | |
SOFIA | 2.5 m (98.4 in) | Single | USA + Germany | Boeing 747SP (mobile, USA) | 2007 | |
Sloan DSS | 2.5 m (98.4 in) | Single | USA | Apache Point Observatory, New Mexico, USA | 1997 | |
Hiltner Telescope | 2.4 m (94.5 in) | Single | USA | MDM Observatory (Kitt Peak), Arizona, USA | 1986 | |
Thai National Telescope (TNT) | 2.4 m (94.5 in) | Single | Thailand + SEAAN | Thai National Observatory, Doi Inthanon, Thailand | 2013 | |
Lijiang[5] | 2.4 m (94.5 in) | Single | China | Yunnan Astronomical Observatory, China | 2008 | |
Hubble (HST) | 2.4 m (94.5 in) | Single | NASA+ESA | Low Earth orbit | 1990 | |
2.4-meter SINGLE Telescope | 2.4 m (94.5 in) | Single | USA | Magdalena Ridge Observatory, New Mexico, USA | 2006/2008 | |
Automated Planet Finder | 2.4 m (94.5 in) | Single | USA | Lick Observatory, California, USA | 2010 | |
Vainu Bappu[6][7] | 2.34 m (92.1 in) | Single | India | Vainu Bappu Observatory, Tamil Nadu, India | 1986 | |
Aristarchos | 2.3 m (90.6 in) | Single | ESO Countries+ Greece | National Observatory of Athens, Mt. Helmos, Greece | 2004 | |
WIRO 2.3[8] | 2.3 m (90.6 in) | Single IR | USA | Wyoming Infrared Observatory, Wyoming, USA | 1977 | |
ANU 2.3m ATT[9] | 2.3 m (90.6 in) | Single | Siding Spring Observatory, New South Wales, Australia | 1984 | ||
Bok Telescope (90-inch) | 2.3 m (90.6 in) | Single | USA | Kitt Peak National Observatory, Arizona, USA | 1969 | |
University of Hawaii 2.2 m (UH88) | 2.24 m (88.2 in) | Single | USA | Mauna Kea Observatories, Hawaii, USA | 1970 | |
MPIA-ESO (ESO-MPI) | 2.2 m (86.6 in) | Single | West Germany | La Silla Observatory, Coquimbo Region, Chile | 1984[10] | |
MPIA-CAHA 2.2m[10][11] | 2.2 m (86.6 in) | Single | West Germany | Calar Alto Observatory, Almería, Spain | 1979 | |
Xinglong 2.16m[12] | 2.16 m (85.0 in) | Single | PRC (China) | Xinglong, China | 1989 | |
Jorge Sahade 2.15m[13] | 2.15 m (84.6 in) | Single | Leoncito Astronomical Complex, San Juan Province, Argentina | 1987 | ||
INAOE 2.12 (OAGH)[14] | 2.12 m (83.5 in) | Single | Mexico + USA | Guillermo Haro Observatory, Sonora, Mexico | 1987 | |
UNAM 2.12 | 2.12 m (83.5 in) | Single | National Astronomical Observatory, Baja California, Mexico | 1979 | ||
Fraunhofer-Teleskop | 2.1 m (83 in) | Ger | Observatorium Wendelstein, Deutschland | 2012 | ||
Kitt Peak 2.1-meter | 2.1 m (82.7 in) | Single | USA | Kitt Peak National Observatory, Arizona, USA | 1964 | |
Otto Struve Telescope | 2.08 m (81.9 in) | Single | USA | McDonald Observatory, Texas, USA | 1939 | |
T13 Automated Spectroscopic Telescope[15] | 2.06 m (81.1 in) | Single | USA (NASA, NSF, & TSU) | Fairborn Observatory, Arizona, USA | 2003 | |
Himalayan Chandra Telescope (HCT)[16] | 2.01 m (79.1 in) | Single | Indian Astronomical Observatory, India | 2000 | ||
Alfred Jensch Teleskop | 2 m (78.7 in) | Single | Ger | Karl Schwarzschild Observatory, Germany | 1960 | |
Carl Zeiss Jena | 2 m (78.7 in) | Single | Shamakhi Astrophysical Obs., Azerbaijan | 1966 | ||
Ondřejov 2-m[17] | 2 m (78.7 in) | Single | Czechoslovakia | Ondřejov Observatory, Czech | 1967 | |
Ritchey-Chretien-Coude (RCC)[18] | 2 m (78.7 in) | Single | Bulgaria | Rozhen Observatory, Bulgaria | 1984 | |
Carl Zeiss Jena | 2 m (78.7 in) | Single | Ukraine, Russia | Peak Terskol Observatory , Russia | 1995 | |
Bernard Lyot Telescope | 2 m (78.7 in) | Single | France | Pic du Midi Obs., France | 1980 | |
Liverpool Telescope[19] | 2 m (78.7 in) | Single | UK | ORM, Canary Islands, Spain | 2003 | |
Faulkes Telescope North | 2 m (78.7 in) | Single | UK | Haleakala Observatory, Hawaii, USA | 2003[20] | |
Faulkes Telescope South | 2 m (78.7 in) | Single | UK | Siding Spring Observatory, New South Wales, Australia | 2001 | |
NAYUTA | 2 m (78.7 in) | Single | Japan | Nishi-Harima Observatory, Hyogo, Japan | 2004 | |
MAGNUM[21] | 2 m (78.7 in) | Single IR | Japan | Haleakala Observatory, Hawaii, USA | 2001–2008 |
Selected telescopes below about 2 meters aperture
A non-comprehensive non-exclusionary list of telescopes one yard to less than 2 metres in aperture.
Name | Aperture m |
Aper. in |
Mirror type | Nationality of Sponsors |
Site | Built |
---|---|---|---|---|---|---|
OHP 1.93 | 1.93 m | 76″ | Single | France | Haute-Provence Observatory, France | 1958 |
74 inch (1.9 m) Radcliffe Telescope[22] | 1.88 m | 74″ | Single | South African Astronomical Observatory Sutherland (1974–present) Radcliffe Observatory, Pretoria, South Africa (1948– 1974)[23] |
1950 | |
1.88 m telescope[24] | 1.88 m | 74″ | Single | Japan | Okayama Astrophysical Observatory, Japan | 1960 |
DDO 1.88 m | 1.88 m | 74″ | Single | Canada | David Dunlap Observatory, Ontario, Canada | 1935 |
74" reflector[25] | 1.88 m | 74″ | Single | Australia | Mount Stromlo Observatory, Australian Capital Territory, Australia | 1955–2003 |
Kottamia telescope 1.88 m[26][27] | 1.88 m | 74″ | Single | Egypt | Egypt | 1960 |
SETI Optical Telescope | 1.83 m | 72″ | Single | USA | Oak Ridge Observatory, Massachusetts, USA | 2006[28] |
Vatican Advanced Technology Telescope (VATT) | 1.83 m | 72″ | Single | Vatican City | Mount Graham International Observatory, Arizona, USA | 1993[29] |
72-Inch Perkins Telescope | 1.83 m | 72″ | Single | USA | Lowell Observatory, Arizona, USA | 1964 |
Plaskett telescope[30] | 1.83 m | 72″ | Single | Canada | Dominion Astrophysical Observatory, British Columbia, Canada | 1918 |
Leviathan of Parsonstown | 1.83 m | 72″ | Metal | Great Britain | Birr Castle; Ireland Historical recreation |
1845 |
Copernico 1.82 m[31] | 1.82 m | 72″ | Single | Italy | Asiago Observatory, Italy | 1976 |
1.8 meter telescope[32] | 1.80 m | 71″ | Single | China | Gaomeigu site of Yunnan Astronomical Observatory, China | 2009 |
Pan-STARRS PS1[33][34] | 1.8 m | 71″ | Single | Germany, Taiwan, US, UK | Haleakala Observatory, Hawaii, USA | 2007 |
VLT Auxiliary Telescopes (1.8 x 4) | 1.80 m | 71″ | Single | Europe | Paranal Observatory, Antofagasta Region, Chile | 2006 |
Spacewatch 1.8-meter Telescope[35] | 1.80 m | 71″ | Single | USA | Kitt Peak National Observatory, Arizona, USA | 2001 |
1.8m Ritchey Cretien reflector[36] | 1.80 m | 72″ | Single | Korea | Bohyunsan Optical Astronomy Observatory, Korea | 1996 |
Sandy Cross Telescope[37] | 1.80 m | 71″ | Single | Canada | Rothney Astrophysical Observatory, Alberta, Canada | 1996 |
Largest amateur telescope in 2013[38] | 1.778 m | 70″ | Single | USA | Utah, USA (mobile) | 2013 |
69-inch Perkins Telescope[39] | 1.75 m | 69″ | Single | USA | Perkins Observatory, Ohio, USA | 1931–1964 |
1.65 m telescope | 1.65 m | 65″ | Single | Molėtai Astronomical Obs., Lithuania | 1991 | |
McMath–Pierce solar telescope | 1.61 m | 63″ | Single | USA | Kitt Peak National Observatory, Arizona, USA | 1962 |
BBO NST | 1.60 m | 63″ | Solar | USA | Big Bear Solar Observatory, California, USA | 2009 |
AZT-33[40] | 1.60 m | 63″ | Single | Sayan Solar Observatory , Siberia, Russia | 1981 | |
1.6 m Perkin Elmer[41] | 1.60 m | 63″ | Single | Brazil | Pico dos Dias Observatory, Minas Gerais, Brazil | 1981 |
Observatoire du Mont-Mégantic | 1.60 m | 63″ | Single IR | Canada | Mont Mégantic Observatory, Québec, Canada | 1978 |
1.56m optical telescope | 1.56 m | 62″ | Single | China | Shanghai Astronomical Observatory, China | 1988 |
Kaj Strand Telescope[42] | 1.55 m | 61″ | Single | USA | USNO Flagstaff Station, Arizona, USA | 1964 |
61" Kuiper Telescope | 1.55 m | 61″ | Single | USA | Steward Observatory, Arizona, USA | 1965[43] |
Oak Ridge Observatory 61" reflector[44] | 1.55 m | 61″ | Single | USA | Oak Ridge Observatory, Massachusetts, USA | 1933 |
Estación Astrofísica de Bosque Alegre[45] | 1.54 m | 60.6″ | Single | Argentina | Estación Astrofísica de Bosque Alegre, Argentina | 1942 |
Toppo Telescope No.1 (TT1)[46] | 1.537 m | 60.5″ | Single (R/C) | Italy | Astronomical Observatory of Castelgrande, Italy | 2008 |
Harvard 60-inch Reflector[47] | 1.524 m | 60″ | Single | USA | Harvard College Observatory, Massachusetts, USA | 1905–1931 |
Hale 60-Inch Telescope | 1.524 m | 60″ | Single | USA | Mt. Wilson Observatory, California, USA | 1908 |
Dunn Solar Telescope ex-VTT | 1.524 m | 60″ | Single | USA | National Solar Observatory, New Mexico, USA | 1969 |
FLWO 1.5m Tillinghast[48] | 1.52 m | 60″ | Single | USA | F. L. Whipple Observatory, Arizona | 1994 |
Telescopio Carlos Sánchez (TCS) | 1.52 m | 60″ | Single | UK + Spain | Teide Observatory, Canary Islands, Spain | 1971 |
OHP 1.52 | 1.52 m | 60″ | Single | France | Haute-Provence Obs., France | 1967 |
Mt. Lemmon 60" Dahl-Kirkham Telescope[49] | 1.52 m | 60″ | Single IR | USA | Steward Obs. (Mt. Lemmon), Arizona, USA | 1970 |
Steward Observatory 60" Cassegrain Telescope[50] | 1.52 m | 60″ | Single | USA | Steward Obs. (Mt. Lemmon), Arizona, USA | 1960s |
OAN 1.52 m[51] | 1.52 m | 60″ | Single | Spain | Calar Alto Observatory, Almería, Spain | 1970s |
1.52 m G.D. Cassini[52] | 1.52 m | 60″ | Single | Italy | Mount Orzale, Italy | 1976 |
Leopold Figl Observatory[53] | 1.50 m | 59″ | Single | Austria | Mitterschöpfl, Vienna Woods Biosphere Reserve, Austria | 1970[citation needed] |
TIRGO Gornergrat Infrared Telescope[54] | 1.50 m | 59″ | Single IR | Italy + Switzerland | Hochalpine Forschungsstation Jungfraujoch und Gornergrat, Alps, Switzerland | 1979–2005 |