CassegrainSystem
A Cassegrain system is a type of reflecting telescope that uses a parabolic primary mirror and a hyperbolic secondary mirror. The light from a distant object first strikes the primary mirror, which is concave and reflects the light back towards a focal point. Before reaching this focal point, the light encounters the secondary mirror, which is convex and hyperbolic in shape. This secondary mirror reflects the light back through a hole in the center of the primary mirror, where it is then focused by an eyepiece or a detector.
This design offers several advantages. The primary mirror's parabolic shape is ideal for collecting parallel rays
The Cassegrain design is widely used in both amateur and professional astronomy. Variations exist, such as