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2. RC Optical Systems - Wikipedia

   en.wikipedia.org/wiki/RC_Optical_Systems

   The smallest RCOS telescope, the 12.5 inch F/9 Ritchey-Chrétien had a base price of just over twenty thousand US dollars in 2009, with large and/or custom models costing considerably more. RC Optical Systems and Star Instruments won a lawsuit in 2008 against Meade Instruments over Meade's description of RCX400 and LX200R telescopes and the ...

3. List of largest optical refracting telescopes - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_optical...

   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.

4. Astronomical Observatory (University of Illinois Urbana ...

   en.wikipedia.org/wiki/Astronomical_Observatory...

   The research regarding photometry was conducted on a 12-inch (300 mm) Warner and Swasey refractor telescope in the second-story equatorial room. As a result of Dr. Stebbins' work determining stellar magnitude using photoelectric photometry, it became standard technique. [6]

5. Talk:List of largest optical refracting telescopes - Wikipedia

   en.wikipedia.org/wiki/Talk:List_of_largest...

   See also 1911britannica - there is a hint in favour of double refractor --84.178.136.47 19:37, 19 July 2005 (UTC) The double refractor was at Meudon (Paris Observatory). The Paris 1900 Exposition instrument was a simple refractor and was horizontal (see article), it was a total failure I think the glass was deformed by its own weight.

6. List of largest optical telescopes in the British Isles

   en.wikipedia.org/wiki/List_of_largest_optical...

   28-inch Refractor (1893) Thompson Telescope with a 26-inch refractor and 30-inch reflector on one mounting (1896) Lassell 2-foot Reflector (1845) Isaac Roberts 20-inch reflector (1885) Western Equatorial (c.1824) 13-inch Astrographic Refractor (1890) Merz 12.8-inch Visual Refractor (1859-1893) (this was replaced by the 28 inch Grubb in the ...

7. List of largest optical reflecting telescopes - Wikipedia

   en.wikipedia.org/wiki/List_of_largest_optical...

   Large UV Optical Infrared Surveyor (LUVOIR), a proposed space telescope for launch in the mid 2030s. MUltiplexed Survey Telescope (MUST), a 6.5 m spectroscopic survey telescope. [30] Chinese Giant Solar Telescope (CGST), an infrared and optical solar telescope, with light-gathering power equivalent to a 5 m diameter aperture. [31] [32]