A reflecting telescope in which light is reflected by one curved mirror and a second plane mirror at 45° to the original beam, to reach a focus at the side of the telescope, is being used at its:

Question

Quizplus · Accepted Answer

The described setup is characteristic of a Newtonian telescope, where light is reflected by a primary curved mirror and then by a secondary flat mirror at a 45° angle to direct the light to a focus at the side of the telescope tube.

A Reflecting Telescope in Which Light Is Reflected by One