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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.
Orion Telescopes & Binoculars was an American retail company that sold telescopes, binoculars and accessories online and in-store for astronomy and birdwatching. It was founded in 1975 and had corporate offices in Watsonville, California. [1] A large proportion of its products were manufactured by the Chinese company Synta for the Orion brand ...
When Edmund Scientific introduced the telescope in 1976 they called it "The Edmund Wide-Field Telescope" with a Part Number "2001" [5] Edmund had a public contest which ran until November 15, 1976, to come up with a name. [6] The winning name was "Astroscan 2001". The "2001" part of the name was dropped over time.
James Clerk Maxwell Telescope: 1987 Mauna Kea, Hawaii, US James Gregory Telescope: 1962 St. Andrews, UK James Webb Space Telescope: 2021 Earth–Sun L 2 Lagrangian point: James Wylie Shepherd Observatory: 2009 Montevallo, Alabama, US Jakarta Observatory: 1968 Jakarta, Indonesia Jantar Mantar: 1727 Jaipur, Rajasthan, India Jena Observatory: 1962 ...
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A novel drift scan telescope, which consists of four 100 × 20 meter 5 m focal length cylinders, with an array of 256 dual-polarized radio receivers along the focus. Will map the 21 cm line of neutral hydrogen over the cosmological redshift range of 0.8 to 2.5. Collected its first light in September 2017. [49]
The Swedish 1-m Solar Telescope, with a lens diameter of 43 inches, is technically the largest, with 39 inches clear for the aperture.The second largest refracting telescope in the world is the Yerkes Observatory 40 inch (102 cm) refractor, used for astronomical and scientific observation for over a century.
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