Astronomers often take photographs with the objective lens

Chapter 25, Problem 25.29

(choose chapter or problem)

Astronomers often take photographs with the objective lens or mirror of a telescope alone, without an eyepiece. (a) Show that the image size hfor a telescope used in this manner is given by hfh/( f p), where h is the object size, f is the objective focal length, and p is the object distance. (b) Simplify the expression in part (a) if the object distance is much greater than the objective focal length. (c) The wingspan of the International Space Station is 108.6 m, the overall width of its solar panel conguration. When it is orbiting at an altitude of 407 km, nd the width of the image formed by a telescope objective of focal length 4.00 m.