The diagram for the schematics ray diagram of the reflecting telescope is
In the reflecting telescope, the image that is formed by the back reflection from a curved surface, is magnified or gigantified by the second mirror.
The advantages of reflecting telescope is
1. There is no deviation for the reflecting telescope as the objective is kept is a mirror.
2. Spherical deviation is lowered when it comes to reflecting telescope by using mirror objectives is a mode that shapes like a parabolic.
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