Technical Diagram of a Telescope System

The image displays a ray diagram illustrating the optical path within a reflecting telescope. Incoming parallel light rays (depicted in green and purple) enter from the left, strike a large concave primary mirror on the right, and are then reflected towards a smaller, angled secondary mirror. This secondary mirror redirects the converging light rays out of the side of the telescope to a focal point, likely for an eyepiece or imaging sensor, as indicated by the red component at the top left. This setup represents a common design for achieving a compact optical system by folding the light path.

telescope - optics - ray diagram - reflecting telescope - primary mirror - secondary mirror - light path - astronomy - optical instrument