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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.
Largest does not always equate to being the best telescopes, and overall light gathering power of the optical system can be a poor measure of a telescope's performance. Space-based telescopes , such as the Hubble Space Telescope , take advantage of being above the Earth's atmosphere to reach higher resolution and greater light gathering through ...
The following is a list of largest single mount optical telescopes sorted by total objective diameter (aperture), including segmented and multi-mirror configurations. It is a historical list, with the instruments listed in chronological succession by objective size.
Largest refractor in 1873. Alvan Clark & Sons mounting replaced with Warner & Swasey mounting in 1893. Sproul Observatory: Pennsylvania, USA: 61 cm (24") 11.0 m (36 ft) 1911: Currently under restoration to be re-installed in Northwest Arkansas [9] Lowell Observatory: Arizona, USA: 61 cm (24") 9.75 m (32 ft) 1894: Alvan Clark & Sons telescope
The Swedish 1-m Solar Telescope [1] [2] [3] (or SST) is a refracting solar telescope at Roque de los Muchachos Observatory, La Palma in the Canary Islands. It is run by the Institute for Solar Physics of Stockholm University. The primary element is a single fused silica lens, making it the largest optical refracting telescope in use in the
The first telescope installed at the observatory was a 12-inch (300-millimeter) refractor made by Alvan Clark. Astronomer E. E. Barnard used the telescope to make "exquisite photographs of comets and nebulae", according to D. J. Warner of Warner & Swasey Company. [2] The Great Lick 91-centimeter (36-inch) refractor, in an 1889 engraving
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