Isaac Newton Telescope

This is my copy of the telescope that Sir Isaac Newton presented to the Royal Society of London in 1671, and is considered to be the first successful reflecting telescope. Newton, and others including James Gregory and Laurent Cassegrain, believed that a reflecting telescope would not be affected by the chromatic aberration that affected refracting telescopes, and each worked to develop a working reflector. Telescopes based on Newtons optical arrangement became known as “Newtonian Telescopes” and are still popular with amateur telescope makers today.

Drawing of Newton's scope

On display in London. This is likely a replica made in the 1920's.