A homemade telephoto "lens" (Fig. P.5.65) consists of two spherical mirrors. The r...

A homemade telephoto "lens" (Fig. P.5.65) consists of two spherical mirrors. The radius of curvature is 2.0 m for the primary and 60 em for the secondary. How far from the smaller mirror should the film plane be located if the object is a star? What is the effective focal length of the system?