Reflector telescopes are a small category of the wide myriad of telescope types. Its differentiating factor is that they use one or several curved mirrors to reflect light facilitating image formation. Just to mention, the second telescope type, refractors, use a lens to transmit light. The third type, optical telescopes, use both lens and mirrors. Reflector telescopes were incepted as an alternative to refracting telescopes in the early 17th century. Determining what is the best reflector or refractor telescope hugely depends on individual scope features.
Reflector telescopes are designed to allow a large objective diameter. Due to this, they are the major telescope type used in astronomy. These telescopes come in varying designs employing different optical elements all aiming at achieving an improved image quality. (more…)