| Nome | Imaxe | Apertura Efectiva m | Aper. pulgaes | Tipo d'espeyu | Nacionalidad / Patrocinio | Llugar | Añu de construcción |
| Gran Telescopiu Canaries (GTC) |  | 10,410,4 m | 409″ | Segmented, 36 | España (90%), Méxicu, EE. XX. | Roque de los Muchachos Obs., Islles Canaries, España | 2006/9 |
Hobby-Eberly Telescope (HET) 11 m × 9.8 m mirror |  | 1010 m[2] | 394″ | Segmented, 91 | EE. XX., Alemaña | McDonald Observatory, Texas, Estaos Xuníos | 1997 |
| Keck 1 |  | 1010 m | 394″ | Segmented, 36 | EE. XX. | Mauna Kea Observatories, Ḥawai, Estaos Xuníos | 1993 |
| Keck 2 |  | 1010 m | 394″ | Segmented, 36 | EE. XX. | Mauna Kea Observatories, Ḥawai, Estaos Xuníos | 1996 |
Southern African Large Telescope (SALT) 11 m × 9.8 m mirror[3] |  | 9,29,2 m | 362″ | Segmented, 91 | Sudáfrica, EE. XX., RX, Alemaña, Polonia, Nueva Zelanda | South African Astronomical Obs., Northern Cape, Sudáfrica | 2005 |
Large Binocular Telescope (LBT) Phased-array optics for combined 11.9 m[4] |  | 8,48,4 m × 2 | 330″ × 2 | Multiple mirror, 2 | EE. XX., Italia, Alemaña | Mount Graham International Observatory, Arizona, Estaos Xuníos | 2004 |
| Subaru (JNLT) |  | 8,28,2 m | 323″ | Single | Xapón | Mauna Kea Observatories, Ḥawai, Estaos Xuníos | 1999 |
| VLT UT1 – Antu |  | 8,28,2 m | 323″ | Single | ESO Countries, Chile | Paranal Observatory, Antofagasta Region, Chile | 1998 |
| VLT UT2 – Kueyen |  | 8,28,2 m | 323″ | Single | ESO Countries, Chile | Paranal Observatory, Antofagasta Region, Chile | 1999 |
| VLT UT3 – Melipal |  | 8,28,2 m | 323″ | Single | ESO Countries, Chile | Paranal Observatory, Antofagasta Region, Chile | 2000 |
| VLT UT4 – Yepun |  | 8,28,2 m | 323″ | Single | ESO Countries, Chile | Paranal Observatory, Antofagasta Region, Chile | 2001 |
| Gemini North (Gillett) |  | 8,18,1 m | 318″ | Single | EE. XX., RX, Canada, Chile, Australia, Arxentina, Brasil | Mauna Kea Observatories, Ḥawai, Estaos Xuníos | 1999 |
| Gemini South |  | 8,18,1 m | 318″ | Single | EE. XX., RX, Canada, Chile, Australia, Arxentina, Brasil | Cuetu Pachón (CTIO), Coquimbo Region, Chile | 2001 |
| MMT (1 x 6.5 m) |  | 6,56,5 m | 256″ | Single | EE. XX. | F. L. Whipple Obs., Arizona, Estaos Xuníos | 2000 |
| Magellan 1 (Walter Baade)[5] |  | 6,56,5 m | 256″ | Honeycomb | EE. XX. | Las Campanas Obs., Coquimbo Region, Chile | 2000 |
| Magellan 2 (Landon Clay) |  | 6,56,5 m | 256″ | Honeycomb | EE. XX. | Las Campanas Obs., Coquimbo Region, Chile | 2002 |
| BTA-6 |  | 66 m | 238″ | Single | XRSS/Rusia | Special Astrophysical Obs., Karachay–Cherkessia, Russia | 1975 |
| Large Zenith Telescope (LZT) | | 66 m | 236″ | Liquid | Canada, France, United States[6] | Maple Ridge, Columbia Británica, Canada | 2003 |
| Hale Telescope (200 inch) |  | 5,085,08 m | 200″ | Single | EE. XX. | Palombar Observatory, California, Estaos Xuníos | 1948 |
| LAMOST Plantía:Ntsh (6.67 m × 6.05 m + 5.72 m × 4.40 m correutor; effective aperture 3.6–4.9 m) |  | 4.9 m–3.6 m[7] | 193″ | Segmented (37 + 24)[8] | PRC (China) | Beijing Astronomical Obs., Xinglong, China | 2008 |
MMT (orixinal optics: 6 × 1.8 m) →see above record for current 6.5 m mirror |  | 4,74,7 m (6×1.8 m)[9] | 186″ | Segmented, 6 | EE. XX. | F. L. Whipple Obs., Arizona, Estaos Xuníos | 1979–1998 |
| Discovery Channel Telescope[10] |  | 4,34,3 m | 169″ | Single | Estaos Xuníos | Lowell Observatory, Happy Jack, Arizona, Estaos Xuníos | 2012 |
| William Herschel Telescope |  | 4,24,2 m | 165″ | Single | RX, Netherlands, España | Roque de los Muchachos Obs., Islles Canaries, España | 1987 |
| SOAR | | 4,14,1 m | 161″ | Single | EE. XX., Brasil | Cuetu Pachón (CTIO), Coquimbo Region, Chile | 2002 |
| VISTA |  | 4,14,1 m | 161″ | Single | ESO Countries, Chile | Paranal Observatory, Antofagasta Region, Chile | 2009 |
| Victor M. Blanco Telescope |  | 44 m | 157″ | Single | EE. XX. | Cuetu Tololo Inter-American Obs., Coquimbo Region, Chile | 1976 |
| Nicholas O. Mayall 4 m[11] |  | 44 m | 158″ | Single | EE. XX. | Kitt Peak National Obs., Arizona, Estaos Xuníos | 1973 |
| Anglu-Australian Telescope (AAT) |  | 3,893,89 m | 154″ | Single | Australia, RX | Australian Astronomical Obs., New South Wales, Australia | 1974 |
| 3.67 m AEOS Telescope (AEOS) |  | 3,673,67 m | 145″ | Single | EE. XX. | Air Force Maui Optical Station, Ḥawai, Estaos Xuníos | 1996 |
| 3.6 m Devasthal Optical Telescope[12] (DOT) |  | 3,603,60 m | 141″ | Single | India | ARIES Devasthal Observatory, Nainital, India | 2016 |
| Telescopiu Nazionale Galileo (TNG) |  | 3,583,58 m | 138″ | Single | Italia | Roque de los Muchachos Obs., Islles Canaries, España | 1997 |
| New Technology Telescope (NTT) |  | 3,583,58 m | 142″ | Single | ESO countries | La Silla Observatory, Coquimbo Region, Chile | 1989 |
| Canada-France-Ḥawai Telescope (CFHT) | Ficheru:Canada-France-Ḥawai-Telescope-dome.jpeg | 3,583,58 m | 141″ | Single | Canada, France, EE. XX. | Mauna Kea Observatories, Ḥawai, Estaos Xuníos | 1979 |
| ESO 3.6 m Telescope |  | 3,573,57 m | 140″ | Single | ESO countries | La Silla Observatory, Coquimbo Region, Chile | 1977 |
| MPI-CAHA 3,53,5 m[13] |  | 3.5 m | 138″ | Single | West Alemaña, España | Calar Alto Obs., Almería, España | 1984 |
| Estaos XuníosF Starfire 3.5 m[14] |  | 3,53,5 m | 138″ | Single | EE. XX. | Starfire Optical Range, New Mexico, Estaos Xuníos | 1994 |
| WIYN Telescope |  | 3,53,5 m | 138″ | Single | EE. XX. | Kitt Peak National Obs., Arizona, Estaos Xuníos | 1994 |
| Space Surveillance Telescope |  | 3,53,5 m | 138″ | Single | EE. XX. | White Sands Missile Range, New Mexico, Estaos Xuníos | 2011 |
| Astrophysical Research Consortium (ARC) |  | 3,483,48 m | 137″ | Single | EE. XX. | Apache Point Obs., New Mexico, Estaos Xuníos | 1994 |
| Shane Telescope |  | 3,053,05 m | 120″ | Single | EE. XX. | Lick Observatory, California, Estaos Xuníos | 1959 |
| NASA Infrared Telescope Facility |  | 3.0 m | 120″ | Single | EE. XX. | Mauna Kea Observatory, Ḥawai, Estaos Xuníos | 1979 |
NASA-LMT →retired, private[15] |  | 33 m | 118″ | Liquid | EE. XX. | NASA Orbital Debris Obs., New Mexico, Estaos Xuníos | 1995–2002 |
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