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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.
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century by Isaac Newton as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic ...
Multiple mirror telescopes that are on the same mount and can form a single combined image are ranked by their equivalent aperture. Fixed altitude telescopes (e.g. HET) are also ranked by their equivalent aperture. All telescopes with an effective aperture of at least 3.00 metres (118 in) at visible or near-infrared wavelengths are included.
In addition to its telescope, a 20-inch Cassegrain reflector, it houses an astronomy exhibit gallery and a simulated voyage through the solar system aboard a "space shuttle". Another of its attractions is a camera obscura , one of the world's largest.
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] Perkins Observatory: 69 inch 175 cm: 1931–1964 USA: Wyeth 61" reflector [11] Oak Ridge Observatory: 61 inch ...
Lick Observatory's Shane 120-inch (3-meter) telescope (center) along with the nearby Automated Planet Finder 100-inch (250-centimeter) reflector. Below is a list of the nine telescopes currently operating at the observatory: [42] The C. Donald Shane telescope 120-inch (3-meter) reflector (Shane Dome, Tycho Brahe Peak). Its instrumentation includes:
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