The dream of a flat, lightweight telescope lens, where microscopic etchings precisely refract different wavelengths of light, ...

Reflector telescopes are well-loved by amateur astronomers ... Celestron NexStar Evolution 9.25 (which boasts one of the best optical systems we've ever tried), the Celestron NexStar 6SE, the ...

Other designers proved unable to grind mirrors with a regular curvature, so the reflector remained largely ... however, most optical telescopes in use in the 21st century derive from the two ...

[Bill Hammack] elaborates on one such piece of engineering: The Alignment Optical Telescope. The telescope was used to find the position of the Lunar Module in space so that its guidance computer ...

New optical technologies have revolutionized astronomy, from the invention of the telescope 400 years ago to more recent developments of adaptive optics and segmented mirrors. The next disruptive ...

Early optical researchers replicated ... most major observatories are Newtonian reflectors. During the nascent years of the telescope, most devices were relatively small, even handheld.

However, its use of Celestron's StarSense smartphone app makes it easy to align and point to celestial targets – and the optical ... telescope like this one. Dobsonians are based on the ...