Question

Suppose that you wish to construct a telescope that can resolve features 9.0 km across on...

Suppose that you wish to construct a telescope that can resolve features 9.0 km across on the moon, 384,000 km away. You have a 3.7 ?m -focal-length objective lens whose diameter is 13.0 cm .

Part A

What focal-length eyepiece is needed if your eye can resolve objects 0.10 mm apart at a distance of 25 cm?

Express your answer using two significant figures. In cm

Part B

What is the resolution limit set by the size of the objective lens (that is, by diffraction)? Use ?=560nm.

Express your answer using two significant figures. In km

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