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Hale Telescope Palomar Obs. 200 inch 508 cm 1949 USA: Hooker Telescope Mount Wilson Obs. 100 inch 254 cm 1917 USA: McDonald Obs. 82 inch i.e. Otto Struve Telescope: 82 inch 208 cm 1939 USA: David Dunlap Observatory: 74 inch 188 cm 1935 Canada: Plaskett telescope Dominion Astrophysical Obs. 72 inch 182 cm 1918 Canada: 69-inch Perkins Telescope [10]
Yale-Columbia Refractor moved to Mount Stromlo Observatory in 1952, same telescope as following entry. Yale-Columbia Refractor Mount Stromlo Observatory: Mount Stromlo, Australia: Destroyed 2003: 66 cm (26") 10.8 m: 1952: Yale-Columbia Refractor – previously located in South Africa. Relocated to Australia in 1952. Destroyed by bush fire on ...
A 12-inch refractor was moved to Yerkes from Kenwood Observatory in the 1890s. [13] Two other telescopes planned for the observatory in the 1890s were a 12-inch aperture refractor and a 24-inch reflecting telescope. [13] There was a heliostat mirror and a meridian room for a transit instrument. [13]
Many modern telescopes and observatories are located in space to observe astronomical objects in wavelengths of the electromagnetic spectrum that cannot penetrate the Earth's atmosphere (such as ultraviolet radiation, X-rays, and gamma rays) and are thus impossible to observe using ground-based telescopes. [1]
Refractor – Aerial telescope: World's largest 1686: Netherlands: 1686 Christiaan Huygens 170 foot refractor: 20 cm: 8" Refractor – Aerial telescope: World's largest 1689: Netherlands: 1686 Christiaan Huygens 210 foot refractor: 19 cm: 7.5" Refractor – Aerial telescope: World's largest 1686: Netherlands: 1686 Hooke's reflector [3] 18 cm: 7"
A refracting telescope (also called a refractor) is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope). The refracting telescope design was originally used in spyglasses and astronomical telescopes but is also used for long-focus camera lenses .
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