Astronomy optics is a branch of optics and photonics that uses light-controlling components for imaging celestial objects. Astronomical optics combines precisely machined lenses and mirrors to reduce any image distortion, and highly sensitive sensors to detect low levels of light. Adaptive astronomy optics can be used for astronomical telescopes.
Large size optical mirror is an importance of astronomical system. The most common are Newtonian Mirrors and the classic Cassegrain. These mirrors are usually divided into primary and secondary mirror. The primary mirror is mostly parabolic design.