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2. Celestron - Wikipedia

   en.wikipedia.org/wiki/Celestron

   Celestron was the first large scale commercial manufacturer of the Schmidt-Cassegrain telescope, introducing its "C8" 8" diameter 2032 mm focal length, ƒ10 telescope in 1970. [7] The primary innovation Celestron/Tom Johnson devised was a method to produce Schmidt corrector plates using a vacuum to pull the glass blanks into a pre-shaped curve ...

3. List of largest optical reflecting telescopes - Wikipedia

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

   Multiple mirror telescopes that are on the same mount and can form a single combined image are ranked by their equivalent aperture. Fixed altitude telescopes (e.g. HET) are also ranked by their equivalent aperture. All telescopes with an effective aperture of at least 3.00 metres (118 in) at visible or near-infrared wavelengths are included.

4. Celestron Inspire 100AZ telescope review: an easy to use all ...

   www.aol.com/news/celestron-inspire-100az...

   Capable of delivering good views of the moon, planets and deep-sky objects, this refractor telescope comes with a uniquely designed lens cap that doubles as a universal smartphone mount

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. Celestron StarSense Explorer LT 114AZ telescope review - AOL

   www.aol.com/news/celestron-starsense-explorer-lt...

   This app-aligned telescope proves an affordable option for backyard moon and planet gazing. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ...

7. Extremely large telescope - Wikipedia

   en.wikipedia.org/wiki/Extremely_large_telescope

   Comparison of nominal sizes of apertures of the above extremely large telescopes and some notable optical telescopes. An extremely large telescope (ELT) is an astronomical observatory featuring an optical telescope with an aperture for its primary mirror from 20 metres up to 100 metres across, [1] [2] when discussing reflecting telescopes of optical wavelengths including ultraviolet (UV ...