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  2. Yerkes Observatory - Wikipedia

    en.wikipedia.org/wiki/Yerkes_Observatory

    The old Yerkes 24 inch (2 foot telescope) reflecting telescope, now in a museum Diagram of the Bruce astrograph. A 12-inch refractor was moved to Yerkes from Kenwood Observatory in the 1890s. [13] Two other telescopes planned for the observatory in the 1890s were a 12-inch aperture refractor and a 24-inch reflecting telescope. [13]

  3. Griffith Observatory - Wikipedia

    en.wikipedia.org/wiki/Griffith_Observatory

    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 ...

  4. Amateur telescope making - Wikipedia

    en.wikipedia.org/wiki/Amateur_telescope_making

    A 12-to-16-inch (300 to 410 mm) reflecting telescope is difficult, but still within the ability of the average amateur who has had experience building smaller instruments. Amateurs have constructed telescopes as large as 1 metre (39 in) across, but usually small groups or astronomy clubs take on such projects.

  5. Meade LX200 - Wikipedia

    en.wikipedia.org/wiki/Meade_LX200

    The Meade LX200 is a family of commercial telescopes produced by Meade Instruments launched in 1992 with 8" (20.32 cm) and a 10" (25.4 cm) Schmidt–Cassegrain models on computerized altazimuth mounts. [1] [2] Two larger models, a 12" (30.48 cm) and a 16" (40.64 cm), quickly

  6. Pisgah Astronomical Research Institute - Wikipedia

    en.wikipedia.org/wiki/Pisgah_Astronomical...

    The principal radio research instruments at PARI are two 26-meter radio telescopes and a 4.6-meter radio telescope named Smiley. These have been adapted for precision tracking of celestial radio sources using multiple frequencies. Smiley is used for remote classroom teaching of astronomy by students in the US and worldwide.

  7. Questar Corporation - Wikipedia

    en.wikipedia.org/wiki/Questar_Corporation

    A 7-inch (180 mm) model was introduced in 1967 for amateur and professional astronomers, hobbyists, industry and government. A scaled-up version of the Questar 3.5" with the integrated Control Box, the Questar Seven, with a nominal 2400mm focal length, has twice the aperture and four times the light gathering power of the 3.5.

  8. Lick Observatory - Wikipedia

    en.wikipedia.org/wiki/Lick_Observatory

    The first telescope installed at the observatory was a 12-inch (300-millimeter) refractor made by Alvan Clark. Astronomer E. E. Barnard used the telescope to make "exquisite photographs of comets and nebulae", according to D. J. Warner of Warner & Swasey Company. [2] The Great Lick 91-centimeter (36-inch) refractor, in an 1889 engraving

  9. National Radio Astronomy Observatory - Wikipedia

    en.wikipedia.org/wiki/National_Radio_Astronomy...

    The 300-foot telescope after collapsing on November 15th, 1988. Until its collapse on November 15, 1988, a 300 ft radio telescope [7] stood at the Green Bank Observatory's unique site. It was the largest radio telescope on Earth when it was brought online for its first observation at 12:42 am on September 21, 1962.

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