The standard telescope of Newton's time, the refracting telescope, was not ideal. Its glass lenses focused the different colors inherent in light at different distances. This resulted, at the ...

Well, any of us who has ever looked through a telescope could say the same, for the two principal types in use today were developed by giants: the refractor by Galileo and the reflector by Newton.

See how telescopes capture the cosmos. ExtremeTech explains the science behind lenses and space exploration. Start exploring ...

Isaac Newton was the first to really make it work. Newton's reflecting telescope consisted of a single curved main mirror, ...

One of the byproducts of his experiments with light was the Newtonian telescope, still widely used today. Newtonian telescopes use a reflecting mirror to avoid the colour distortion and rainbow ...

The Stephens observatory, located on the roof of Carnegie, houses a 12-inch Newtonian reflecting telescope, built by Roscoe G. Stephens of Kennebunk, Maine. Stephens gifted the telescope to the ...

His theory of optics made him reconsider the design of the telescope, which up until this point was a large, cumbersome instrument. By using mirrors instead of lenses, Newton was able to create a ...

This computer-assisted Celestron 114LCM is a great scope for beginners, and it's $80 off at Amazon this Black Friday.