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  2. List of largest optical telescopes historically - Wikipedia

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

    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 ...

  3. List of largest optical reflecting telescopes - Wikipedia

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

    This list of the largest optical reflecting telescopes with objective diameters of 3.0 metres (120 in) or greater is sorted by aperture, which is a measure of the light-gathering power and resolution of a reflecting telescope. The mirrors themselves can be larger than the aperture, and some telescopes may use aperture synthesis through ...

  4. List of the largest optical telescopes in North America

    en.wikipedia.org/wiki/List_of_the_largest...

    Largest in operation [7] James Lick telescope Lick Observatory: Mount Hamilton, California, USA: 91 cm (36") 17.6 m: 1888 William Thaw Telescope Allegheny Observatory: Pittsburgh, Pennsylvania, USA: 76 cm (30") 14.1 m: 1914: Brashear made, photographic [8] Leander McCormick Observatory: Charlottesville, Virginia, USA: 66 cm (26") 9.9 m: 1884 ...

  5. 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.

  6. 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.

  7. James Webb telescope sheds light on earliest galaxies to date

    www.aol.com/james-webb-telescope-sheds-light...

    The confirmation comes from the data taken from Nasa’s James Webb Space Telescope (JWST), which is the largest and the most powerful telescope ever built.

  8. Mount Wilson Observatory - Wikipedia

    en.wikipedia.org/wiki/Mount_Wilson_Observatory

    The telescope is used for public outreach as the second largest telescope in the world devoted to the general public. Custom made 10 cm eyepieces are fitted to its focus using the bent cassegrain configuration to provide views of the Moon, planetary, and deep-sky objects. Groups may book the telescope for an evening of observing. [9]

  9. Leviathan of Parsonstown - Wikipedia

    en.wikipedia.org/wiki/Leviathan_of_Parsonstown

    Leviathan of Parsonstown, or Rosse six-foot telescope, is a historic reflecting telescope of 72 inches (1.83 m) aperture, which was the largest telescope in the world from 1845 until the construction of the 100-inch (2.5 m) Hooker Telescope in California in 1917.

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