Nombre | Imagen | Apertura Efectiva m | Aper. pulgadas | Tipo de espejo | Nacionalidad / Patrocinio | Lugar | Año Ina. |
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Gran Telescopio Canarias (GTC) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Grantelescopio.jpg/50px-Grantelescopio.jpg) | &&&&&&&&&&&&&010.40000010,4 m | 409″ | Segmented, 36 | España México
USA
| Roque de los Muchachos Obs., Canary Islands, Spain | 2006/9 |
Hobby-Eberly Telescope (HET) 11 m × 9.8 m mirror | ![](//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/HET_Dome.jpg/50px-HET_Dome.jpg) | &&&&&&&&&&&&&010.&&&&&010 m[2] | 394″ | Segmented, 91 | USA Alemania
| McDonald Observatory, Texas, Estados Unidos | 1997 |
Keck 1 | ![](//upload.wikimedia.org/wikipedia/commons/thumb/a/af/KeckTelescopes-hi.png/50px-KeckTelescopes-hi.png) | &&&&&&&&&&&&&010.&&&&&010 m | 394″ | Segmented, 36 | USA | Mauna Kea Observatories, Hawái, Estados Unidos | 1993 |
Keck 2 | ![](//upload.wikimedia.org/wikipedia/commons/thumb/a/af/KeckTelescopes-hi.png/50px-KeckTelescopes-hi.png) | &&&&&&&&&&&&&010.&&&&&010 m | 394″ | Segmented, 36 | USA | Mauna Kea Observatories, Hawái, Estados Unidos | 1996 |
Southern African Large Telescope (SALT) 11 m × 9.8 m mirror[3] | ![](//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Southern_African_Large_Telescope_720x576px.jpg/50px-Southern_African_Large_Telescope_720x576px.jpg) | &&&&&&&&&&&&&&09.2000009,2 m | 362″ | Segmented, 91 | Sudáfrica[[United Kingdom| ]] USA Alemania
Reino Unido
Polonia
Nueva Zelanda
| South African Astronomical Obs., Northern Cape, Sudáfrica | 2005 |
Large Binocular Telescope (LBT) Phased-array optics for combined 11.9 m[4] | ![](//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/LBT-Gebaeude.jpg/50px-LBT-Gebaeude.jpg) | &&&&&&&&&&&&&&08.4000008,4 m × 2 | 330″ × 2 | Multiple mirror, 2 | [[United Kingdom| ]] USA Italia
Alemania
| Mount Graham International Observatory, Arizona, Estados Unidos | 2004 |
Subaru (JNLT) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/a/a7/MaunaKea_Subaru.jpg/50px-MaunaKea_Subaru.jpg) | &&&&&&&&&&&&&&08.2000008,2 m | 323″ | Single | Japón | Mauna Kea Observatories, Hawái, Estados Unidos | 1999 |
VLT UT1 – Antu | ![](//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Paranal_opendome.jpg/50px-Paranal_opendome.jpg) | &&&&&&&&&&&&&&08.2000008,2 m | 323″ | Single | Europa Chile
| Paranal Observatory, Antofagasta Region, Chile | 1998 |
VLT UT2 – Kueyen | ![](//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/UVES_on_UT2-KUEYEN.jpg/50px-UVES_on_UT2-KUEYEN.jpg) | &&&&&&&&&&&&&&08.2000008,2 m | 323″ | Single | Europa Chile
| Paranal Observatory, Antofagasta Region, Chile | 1999 |
VLT UT3 – Melipal | ![](//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Paranal_UT3_2008-01-04.jpg/50px-Paranal_UT3_2008-01-04.jpg) | &&&&&&&&&&&&&&08.2000008,2 m | 323″ | Single | Europa Chile
| Paranal Observatory, Antofagasta Region, Chile | 2000 |
VLT UT4 – Yepun | ![](//upload.wikimedia.org/wikipedia/commons/thumb/1/18/Cloaked_in_Stars.jpg/50px-Cloaked_in_Stars.jpg) | &&&&&&&&&&&&&&08.2000008,2 m | 323″ | Single | Europa Chile
| Paranal Observatory, Antofagasta Region, Chile | 2001 |
Gemini North (Gillett) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Gemini_Observatory_at_sunset.jpg/50px-Gemini_Observatory_at_sunset.jpg) | &&&&&&&&&&&&&&08.1000008,1 m | 318″ | Single | USA Canadá
Chile
Reino Unido
Australia
Argentina
Brasil
| Mauna Kea Observatories, Hawái, Estados Unidos | 1999 |
Gemini South | ![](//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Gemini_South_01.jpg/50px-Gemini_South_01.jpg) | &&&&&&&&&&&&&&08.1000008,1 m | 318″ | Single | USA Canadá
Chile
Reino Unido
Australia
Argentina
Brasil
| Cerro Pachón (CTIO), Coquimbo Region, Chile | 2001 |
MMT (1 x 6.5 m) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/MMT_Observatory.jpg/50px-MMT_Observatory.jpg) | &&&&&&&&&&&&&&06.5000006,5 m | 256″ | Single | USA | F. L. Whipple Obs., Arizona, Estados Unidos | 2000 |
Magellan 1 (Walter Baade)[5] | ![](//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Magellan_telescopes.jpg/50px-Magellan_telescopes.jpg) | &&&&&&&&&&&&&&06.5000006,5 m | 256″ | Honeycomb | USA | Las Campanas Obs., Coquimbo Region, Chile | 2000 |
Magellan 2 (Landon Clay) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Magellan_telescopes.jpg/50px-Magellan_telescopes.jpg) | &&&&&&&&&&&&&&06.5000006,5 m | 256″ | Honeycomb | USA | Las Campanas Obs., Coquimbo Region, Chile | 2002 |
BTA-6 | ![](//upload.wikimedia.org/wikipedia/commons/thumb/7/75/%D0%93%D0%BB%D0%B0%D0%B2%D0%BD%D0%B0%D1%8F_%D0%BE%D0%B1%D1%81%D0%B5%D1%80%D0%B2%D0%B0%D1%82%D0%BE%D1%80%D0%B8%D1%8F.jpg/50px-%D0%93%D0%BB%D0%B0%D0%B2%D0%BD%D0%B0%D1%8F_%D0%BE%D0%B1%D1%81%D0%B5%D1%80%D0%B2%D0%B0%D1%82%D0%BE%D1%80%D0%B8%D1%8F.jpg) | &&&&&&&&&&&&&&06.&&&&&06 m | 238″ | Single | Rusia URSS ||Special Astrophysical Obs., Karachay–Cherkessia, Rusia||1975
|
Large Zenith Telescope (LZT) | | &&&&&&&&&&&&&&06.&&&&&06 m | 236″ | Liquid | Canadá Francia
USA
| Maple Ridge, British Columbia, Canadá | 2003 |
Hale Telescope (200 inch) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/a/a3/P200_Dome_Open.jpg/50px-P200_Dome_Open.jpg) | &&&&&&&&&&&&&&05.&800005,08 m | 200″ | Single | USA | Palomar Observatory, California, USA | 1948 |
LAMOST &0000000000000004.900000 (6.67 m × 6.05 m + 5.72 m × 4.40 m corrector; effective aperture 3.6–4.9 m) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/LAMOST_telescope_org.jpg/50px-LAMOST_telescope_org.jpg) | 4.9 m–3.6 m[6] | 193″ | Segmented (37 + 24)[7] | China | Beijing Astronomical Obs., Xinglong, China | 2008 |
MMT (original optics: 6 × 1.8 m) →see above record for current 6.5 m mirror | ![](//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/MMT_Observatory.jpg/50px-MMT_Observatory.jpg) | &&&&&&&&&&&&&&04.7000004,7 m (6×1.8 m)[8] | 186″ | Segmented, 6 | USA | F. L. Whipple Obs., Arizona, USA | 1979–1998 |
Discovery Channel Telescope[9] | ![](//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/The_Dome_of_Discovery_Channel_Telecope.JPG/50px-The_Dome_of_Discovery_Channel_Telecope.JPG) | &&&&&&&&&&&&&&04.3000004,3 m | 169″ | Single | USA | Lowell Observatory, Happy Jack, Arizona, USA | 2012 |
William Herschel Telescope | ![](//upload.wikimedia.org/wikipedia/commons/thumb/e/e2/William_herschel_Telescope_Dome.jpg/50px-William_herschel_Telescope_Dome.jpg) | &&&&&&&&&&&&&&04.2000004,2 m | 165″ | Single | Reino Unido Países Bajos
España
| Roque de los Muchachos Obs., Canary Islands, Spain | 1987 |
SOAR | | &&&&&&&&&&&&&&04.1000004,1 m | 161″ | Single | USA Brasil
| Cerro Pachón (CTIO), Coquimbo Región, Chile | 2002 |
VISTA | ![](//upload.wikimedia.org/wikipedia/commons/thumb/4/40/VISTA_at_Paranal_Eso0704b.tif/lossy-page1-50px-VISTA_at_Paranal_Eso0704b.tif.jpg) | &&&&&&&&&&&&&&04.1000004,1 m | 161″ | Single | Europa Chile
| Paranal Observatory, Antofagasta Región, Chile | 2009 |
Victor M. Blanco Telescope | ![](//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/4m-Victor_M._Blanco_Telescope.jpg/50px-4m-Victor_M._Blanco_Telescope.jpg) | &&&&&&&&&&&&&&04.&&&&&04 m | 157″ | Single | USA | Cerro Tololo Inter-American Obs., Coquimbo Región, Chile | 1976 |
Nicholas U. Mayall 4 m[10] | ![](//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Kittpeakteliscope.JPG/50px-Kittpeakteliscope.JPG) | &&&&&&&&&&&&&&04.&&&&&04 m | 158″ | Single | USA | Kitt Peak National Obs., Arizona, USA | 1973 |
Anglo-Australian Telescope (AAT) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Anglo-Australian_Telescope_dome.JPG/50px-Anglo-Australian_Telescope_dome.JPG) | &&&&&&&&&&&&&&03.8900003,89 m | 154″ | Single | Australia Reino Unido
| Australian Astronomical Obs., New South Wales, Australia | 1974 |
3.67 m AEOS Telescope (AEOS) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/AEOS3_lg.jpg/50px-AEOS3_lg.jpg) | &&&&&&&&&&&&&&03.6700003,67 m | 145″ | Single | USA | Air Force Maui Optical Station, Hawái, USA | 1996 |
3.6 m Devasthal Optical Telescope[11] (DOT) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/3.6m_Devasthal_Optical_Telescope.jpg/50px-3.6m_Devasthal_Optical_Telescope.jpg) | &&&&&&&&&&&&&&03.6000003,60 m | 141″ | Single | India | ARIES Devasthal Observatory, Nainital, India | 2016 |
Telescopio Nazionale Galileo (TNG) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Tng_2001.jpg/50px-Tng_2001.jpg) | &&&&&&&&&&&&&&03.5800003,58 m | 138″ | Single | Italia | Roque de los Muchachos Obs., Canary Islands, Spain | 1997 |
New Technology Telescope (NTT) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/0/03/La_Silla_NTT.jpg/50px-La_Silla_NTT.jpg) | &&&&&&&&&&&&&&03.5800003,58 m | 142″ | Single | Europa | La Silla Observatory, Coquimbo Region, Chile | 1989 |
Canada-France-Hawaii Telescope (CFHT) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Canada-France-Hawaii-Telescope-dome.jpeg/50px-Canada-France-Hawaii-Telescope-dome.jpeg) | &&&&&&&&&&&&&&03.5800003,58 m | 141″ | Single | Canadá Francia
USA
| Mauna Kea Observatories, Hawái, USA | 1979 |
ESO 3.6 m Telescope | ![](//upload.wikimedia.org/wikipedia/commons/thumb/a/a3/Wallpaper_of_3.6-m_Telescope_at_La_Silla.jpg/50px-Wallpaper_of_3.6-m_Telescope_at_La_Silla.jpg) | &&&&&&&&&&&&&&03.5700003,57 m | 140″ | Single | Europa | La Silla Observatory, Coquimbo Región, Chile | 1977 |
MPI-CAHA &&&&&&&&&&&&&&03.5000003,5 m[12] | ![](//upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Bacares09.jpg/50px-Bacares09.jpg) | 3.5 m | 138″ | Single | España Alemania del Este
| Calar Alto Obs., Almería, Spain | 1984 |
USAF Starfire 3.5 m[13] | ![](//upload.wikimedia.org/wikipedia/commons/thumb/9/90/Big3_5mtele.png/50px-Big3_5mtele.png) | &&&&&&&&&&&&&&03.5000003,5 m | 138″ | Single | USA | Starfire Optical Range, Nuevo México, USA | 1994 |
WIYN Telescope | ![](//upload.wikimedia.org/wikipedia/commons/thumb/e/e7/WIYN_OBSERVATORY_ON_KITT_PEAK.jpg/50px-WIYN_OBSERVATORY_ON_KITT_PEAK.jpg) | &&&&&&&&&&&&&&03.5000003,5 m | 138″ | Single | USA | Kitt Peak National Obs., Arizona, USA | 1994 |
Space Surveillance Telescope | ![](//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Space_Surveillance_Telescope.jpg/50px-Space_Surveillance_Telescope.jpg) | &&&&&&&&&&&&&&03.5000003,5 m | 138″ | Single | USA | White Sands Missile Range, Nuevo México, USA | 2011 |
Astrophysical Research Consortium (ARC) | ![](//upload.wikimedia.org/wikipedia/commons/thumb/8/89/D70050914_15_ApolloLLR.jpg/50px-D70050914_15_ApolloLLR.jpg) | &&&&&&&&&&&&&&03.4800003,48 m | 137″ | Single | USA | Apache Point Obs., Nuevo México, USA | 1994 |
Shane Telescope | ![](//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Shane_dome.JPG/50px-Shane_dome.JPG) | &&&&&&&&&&&&&&03.&500003,05 m | 120″ | Single | USA | Lick Observatory, California, USA | 1959 |
NASA Infrared Telescope Facility | ![](//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Afshin_Darian_-_NASA_Infrared_Telescope_Facility.jpg/50px-Afshin_Darian_-_NASA_Infrared_Telescope_Facility.jpg) | 3.0 m | 120″ | Single | USA | Mauna Kea Observatory, Hawái, USA | 1979 |
NASA-LMT →retired, private[14] | ![](//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Liquid_Mirror_Telescope.jpg/50px-Liquid_Mirror_Telescope.jpg) | &&&&&&&&&&&&&&03.&&&&&03 m | 118″ | Liquid | USA | NASA Orbital Debris Obs., Nuevo México, USA | 1995–2002 |
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