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In 2007, Obsession Telescopes released a second series of telescopes more portable than their original design. They designated this series as Ultra Compact (UC), referring to their former one as 'Classic.' From 2009-2012 their telescopes ranged from USD 3000 for a 12.5 inch telescope, up to USD 12–15,000 for a 25-inch telescope.
Egypt: Egypt: 1960 SETI Optical Telescope: 1.83 m: 72″ Single: USA: Oak Ridge Observatory, Massachusetts, USA: 2006 [28] Vatican Advanced Technology Telescope (VATT) 1.83 m: 72″ Single: Vatican City: Mount Graham International Observatory, Arizona, USA: 1993 [29] 72-Inch Perkins Telescope: 1.83 m: 72″ Single: USA: Lowell Observatory ...
Obsession's New 18-inch scope by John Shibley Astronomy Magazine April 2008, Equipment review for the Obsession Ultra Compact 18 f/4.2 telescope Kalmbach Publishing 800-446-5489 Obsession Telescopes A New Obsession Introduction of Obsession 18 f/4.2 UC Astronomy Technology Today May 2007 info@astronomytechnologytoday.com
List of largest optical reflecting telescopes – List of large optical telescopes; List of largest optical refracting telescopes; List of space telescopes; List of solar telescopes; List of telescope types; List of largest optical telescopes historically; List of largest optical telescopes in the 20th century
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 ...
Light Nation Hale Telescope Palomar Obs. 200 inch 508 cm 1949 USA: Hooker Telescope Mount Wilson Obs. 100 inch 254 cm 1917 USA: 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
Largest Visible-light space based telescope: Low Earth orbit NASA+ ESA: 1990 BTA-6: 6 m: 238" glass mirror reflector: World's largest 1976: Zelenchukskaya, Caucasus: 1976 McMath-Pierce Solar Telescope: 1.61 m: 63" glass mirror reflector: Largest solar telescope: Kitt Peak National Obs., USA: 1962 Hale Telescope (200 inch) 5.08 m: 200" glass ...
72-Inch Perkins Telescope: 1.83 m: 72″ Single: USA: Lowell Observatory, Anderson Mesa USA: 1964 Plaskett telescope [25] 1.83 m: 72″ Single: Canada: Dominion Astrophysical Observatory, Canada: 1918 Copernico 182 cm [26] 1.82 m: 72″ Single: Italy: Asiago Observatory, Italy (1350 m) 1973 1.8m Ritchey Cretien reflector [27] 1.8 m: 72 ...