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  2. Obsession Telescopes - Wikipedia

    en.wikipedia.org/wiki/Obsession_Telescopes

    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.

  3. List of the United States Army fire control and sighting ...

    en.wikipedia.org/wiki/List_of_the_United_States...

    This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.

  4. Talk:Obsession Telescopes - Wikipedia

    en.wikipedia.org/wiki/Talk:Obsession_Telescopes

    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

  5. List of large optical telescopes - Wikipedia

    en.wikipedia.org/wiki/List_of_large_optical...

    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.

  6. List of largest optical refracting telescopes - Wikipedia

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

    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 ...

  7. 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 ...

  8. Mount Laguna Observatory - Wikipedia

    en.wikipedia.org/wiki/Mount_Laguna_Observatory

    Mount Laguna Observatory (MLO) is an astronomical observatory owned and operated by San Diego State University (SDSU). [1] MLO is located approximately 75 kilometers (47 mi) east of downtown San Diego, California, on the eastern edge of Cleveland National Forest, in the Laguna Mountains on the SDSU Astronomy Campus near the hamlet of Mount Laguna.

  9. List of largest optical telescopes in the British Isles

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

    Largest operational optical telescope in the UK Cambridge 36-Inch telescope [4] 36 in (91.4 cm) Reflector: Cambridge, Cambridgeshire, England: University of Cambridge: 1955: Largest optical telescope still in use in England 36-inch Yapp telescope [5] 36 in (91.4 cm) Reflector: Herstmonceux, East Sussex, England: The Observatory Science Centre: 1932