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Quadruple Saturn–moon transit captured by the Hubble Space Telescope. Study of Saturn's moons has also been aided by advances in telescope instrumentation, primarily the introduction of digital charge-coupled devices which replaced photographic plates. For the 20th century, Phoebe stood alone among Saturn's known moons with its highly ...
Saturn imaged in 2021 through a 6" telescope, dimly showing the polar hexagon. Saturn's polar hexagon was discovered by David Godfrey in 1987 [14] from piecing together fly-by views from the 1981 Voyager mission, [15] [16] and was revisited in 2006 by the Cassini mission.
Astronomer George Ellery Hale, whose vision created Palomar Observatory, built the world's largest telescope four times in succession. [8] He published a 1928 article proposing what was to become the 200-inch Palomar reflector; it was an invitation to the American public to learn about how large telescopes could help answer questions relating to the fundamental nature of the universe.
The atmosphere of Saturn's moon Titan was discovered by Kuiper while working at the Yerkes Observatory—a moon that would later be visited by Voyager 1 and also the Cassini-Huygens spacecraft. By 1905, the largest telescope in the World was the Harvard 60-inch Reflector ( 1.524 m 60″) at Harvard College Observatory, USA. [72]
Janus / ˈ dʒ eɪ n ə s / is an inner satellite of Saturn.It is also known as Saturn X.It is named after the mythological Janus.This natural satellite was first identified by Audouin Dollfus on December 15, 1966, although it had been unknowingly photographed earlier by Jean Texereau.
A functioning one-tenth scale model of the telescope was also made at Corning. [4] The 200-inch (510 cm) telescope saw first light on January 26, 1949, at 10:06 pm PST [5] [6] under the direction of American astronomer Edwin Powell Hubble, targeting NGC 2261, an object also known as Hubble's Variable Nebula. [7] [8]
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Mimas, also designated Saturn I, is the seventh-largest natural satellite of Saturn.With a mean diameter of 396.4 kilometres or 246.3 miles, Mimas is the smallest astronomical body known to be roughly rounded in shape due to its own gravity.
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