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Refracting telescopes use a lens to focus light. 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 ...
The main telescopes of the observatory are a double refractor by Zeiss after the Viennese selenographer König placed in the main dome (bought in 1928) and a Maksutov-Cassegrain telescope installed in the western dome in 1976. The eastern dome of the observatory is equipped with a 40 cm mirror telescope by Meade.
They house a Zeiss Cassegrain telescope (500 mm (20 in) aperture, 7,500 mm (300 in) focal length) and a refractor with coudé focus (150 mm (5.9 in) aperture, 2,250 mm (89 in) focal length). Two further domes on the roof of the main building house an astrograph (120 mm (4.7 in) aperture, 600 mm (24 in) focal length) and the historic Urania ...
Since opening in 1935, more than seven million people have put an eye to Griffith Observatory's original 12-inch Zeiss refracting telescope. More people have looked though it than any other telescope in the world. — Preceding unsigned comment added by 198.180.167.11 15:08, 3 January 2014 (UTC)
This includes the historic 12" Zeiss Refracting Telescope on the roof, and up to four portable telescopes placed outside offering views of visible celestial objects for the night. At 9:30 p.m., the doors to the Zeiss dome close, and lines for the portable telescopes outside stop allowing guests into the queues - though the lines may close ...
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 .
Consumer Reports (CR), formerly Consumers Union (CU), is an American nonprofit consumer organization dedicated to independent product testing, investigative journalism, consumer-oriented research, public education, and consumer advocacy.
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.