bn:03723142n
Noun Concept
Categories: Optical telescopes
EN
extremely large telescope  ELT  Colossus Telescope  Extremely Large Telescopes  Project ELT
EN
An extremely large telescope is an astronomical observatory featuring an optical telescope with an aperture for its primary mirror from 20 metres up to 100 metres across, when discussing reflecting telescopes of optical wavelengths including ultraviolet, visible, and near infrared wavelengths. Wikipedia
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EN
An extremely large telescope is an astronomical observatory featuring an optical telescope with an aperture for its primary mirror from 20 metres up to 100 metres across, when discussing reflecting telescopes of optical wavelengths including ultraviolet, visible, and near infrared wavelengths. Wikipedia
A type of telescope Wikipedia Disambiguation
Astronomical observatory featuring an optical telescope with an aperture of more than 20 m diameter Wikidata
A telescope with an aperture of more than 20 meters diameter. OmegaWiki