Do Reflecting Telescopes Have Lenses?

Reflecting telescopes use mirrors instead of lenses to focus the light. A concave mirror is used to gather light and reflect it back to a focal point.

Do reflecting telescopes use lenses?

A refractor uses lenses within a tube to refract (bend) light. It's the type of long telescope which you might imagine old-time astronomers, like Galileo, using. Reflectors, on the other hand, use mirrors instead of lenses to reflect light. Most modern observatories use reflectors because their telescopes are so huge.

How many lenses does a reflecting telescope have?

However, reflector telescopes have no lenses at all, since they rely strictly on mirrors instead. Whatever the combination of lenses and/or mirrors, a telescope does two basic thing. First, it gathers much more light than the human eye can capture, and focuses it onto a smaller area.