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  • Thumbnail for Mount Wilson Observatory
    contains two historically important telescopes: the 100-inch (2.5 m) Hooker telescope, which was the largest aperture telescope in the world from its completion...
    35 KB (3,886 words) - 19:47, 12 July 2024
  • Thumbnail for Hale Telescope
    The Hale Telescope is a 200-inch (5.1 m), f/3.3 reflecting telescope at the Palomar Observatory in San Diego County, California, US, named after astronomer...
    30 KB (2,954 words) - 18:08, 3 August 2024
  • Thumbnail for 40-foot telescope
    a 48-inch (120 cm) diameter primary mirror with a 40-foot-long (12 m) focal length (hence its name "Forty-Foot"). It was the largest telescope in the...
    15 KB (1,847 words) - 03:42, 23 July 2024
  • Thumbnail for Yerkes Observatory
    collection of over 170,000 photographic plates. The Yerkes 40-inch was the largest refracting-type telescope in the world when it was dedicated in 1897. During...
    65 KB (5,879 words) - 18:32, 3 October 2024
  • Thumbnail for History of the telescope
    the Mount Wilson 60-inch (1.5 metre), the 100-inch (2.5 metre) Hooker Telescope (1917) and the 200-inch (5 metre) Hale Telescope (1948); essentially all...
    74 KB (9,268 words) - 18:51, 15 October 2024
  • Thumbnail for Prairie Observatory
    The observatory's principle telescope was a 40-inch (1.0 meter) Cassegrain reflector by Astro Mechanics Inc. The telescope itself cost about $244,000,...
    4 KB (457 words) - 16:51, 9 October 2024
  • Thumbnail for Ben Gascoigne
    field photography on the new 40-inch telescope at Siding Spring. Such corrector plates were subsequently used on many telescopes and became known as Gascoigne...
    36 KB (4,308 words) - 02:07, 19 February 2024
  • Thumbnail for Vainu Bappu Observatory
    telescope has been completely designed and fabricated at the workshops of the Indian Institute of Astrophysics. In 1972 a 1-metre (40-inch) telescope...
    12 KB (1,457 words) - 08:12, 1 March 2024
  • Thumbnail for Ritchey–Chrétien telescope
    24-inch reflector). The second RCT was a 102 cm (40 in) instrument constructed by Ritchey for the United States Naval Observatory; that telescope is still...
    16 KB (2,145 words) - 21:22, 15 July 2024
  • Thumbnail for Refracting telescope
    August 14:40 and 17 August 16:06 Washington mean time respectively). The telescope used for the discovery was the 26-inch (66 cm) refractor (telescope with...
    35 KB (3,717 words) - 19:03, 22 September 2024
  • Thumbnail for List of largest optical telescopes in the British Isles
    Harvard telescopes) Lassel's reflector, this 24 inch metal mirror telescope was used to discover the moons Triton and Hyperion. Newton's reflector 40-foot...
    12 KB (746 words) - 11:46, 15 October 2024
  • Thumbnail for United States Naval Observatory
    largest optical telescope installed at USNO saw "first light". This 40 inch aperture instrument was also the second (and final) telescope made by famed...
    38 KB (3,293 words) - 22:41, 5 October 2024
  • Thumbnail for Yerkes 41-inch reflector
    Yerkes 41-inch reflector is a 40-inch aperture (101.6 cm) reflecting telescope at the Yerkes Observatory, that was completed in 1968. It is known as the...
    7 KB (776 words) - 00:36, 24 August 2023
  • Thumbnail for Mount Laguna Observatory
    06 m (42 in) MLO 40-inch Telescope is a Cassegrain reflector built by Astro Mechanics in 1966. It was originally fitted with a 1.02 m (40 in) primary mirror...
    10 KB (807 words) - 07:23, 29 September 2024
  • Thumbnail for List of largest optical refracting telescopes
    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...
    38 KB (1,058 words) - 19:44, 24 April 2024
  • Thumbnail for Palomar Observatory
    observatory operates several telescopes, including the 200-inch (5.1 m) Hale Telescope, the 48-inch (1.2 m) Samuel Oschin Telescope (dedicated to the Zwicky...
    33 KB (3,157 words) - 23:34, 12 October 2024
  • Thumbnail for Catalina Station
    and later in 1963 a 28-inch telescope opened at CS Site II, about 0.5 km (0.31 mi) to the southeast. In 1965 a 61-inch telescope was opened at Site I,...
    8 KB (846 words) - 22:01, 12 September 2023
  • Thumbnail for Crossley telescope
    The Crossley telescope is a 36-inch (910 mm) reflecting telescope located at Lick Observatory in the U.S. state of California. It was used between 1895...
    18 KB (1,776 words) - 21:43, 29 December 2023
  • Thumbnail for List of largest optical telescopes historically
    of a telescope's historical or scientific significance; for example, William Parsons, 3rd Earl of Rosse's 72-inch (1.8 m) reflecting telescope did not...
    23 KB (654 words) - 19:42, 9 October 2023
  • 0-meter (40-inch) "Ritchey–Chrétien Telescope" is also an equatorially driven, fork-mounted telescope. The Ritchey is the original Station telescope which...
    45 KB (4,190 words) - 19:53, 22 September 2024
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