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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. Consumer Reports - Wikipedia

   en.wikipedia.org/wiki/Consumer_Reports

   Consumer Reports Best Buy Drugs is available free on Consumer Reports Health.org. It compares prescription drugs in over 20 major categories, such as heart disease, blood pressure and diabetes, and gives comparative ratings of effectiveness and costs, in reports and tables, in web pages and PDF documents, in summary and detailed form.

4. 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.

5. List of largest optical reflecting telescopes - Wikipedia

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

   Largest does not always equate to being the best telescopes, and overall light gathering power of the optical system can be a poor measure of a telescope's performance. Space-based telescopes , such as the Hubble Space Telescope , take advantage of being above the Earth's atmosphere to reach higher resolution and greater light gathering through ...

6. List of telescope types - Wikipedia

   en.wikipedia.org/wiki/List_of_telescope_types

   Telescopes can be classified by optical design or mechanical design/construction. Telescopes can also be classified by where they are placed, such as space telescopes . One major determining factor is type of light, or particle being observed including devices referred to as "telescopes" that do not form an image or use optics.

7. Best noise-canceling headphones, according to Consumer Reports

   www.aol.com/news/best-noise-canceling-headphones...

   SEE ALL Consumer Reports product reviews. ... Sony WF-1000XM4 $279.99 at Best Buy. Sony WF-1000XM4 $278.00 at Abt. Over-Ear, Bluetooth, and Budget-Friendly Anker SoundCore Life Q20.