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The largest refracting telescope in the world is the 102-cm (40 in.) telescope at Yerkes ...

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The largest refracting telescope in the world is the 102-cm (40 in.) telescope at Yerkes ...

The largest refracting telescope in the world is the 102-cm (40 in.) telescope at Yerkes Observatory, built in 1897. Why have no larger refracting telescopes ever been built?
A)   Larger lenses have too much chromatic aberration.
B)   The sagging of larger lenses under their own weight will produce image distortion.
C)   The thickness of larger lenses will produce too much spherical aberration.
D)   Larger lenses produce too much magnification.

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Discovering the Universe

Edition: 7^th

Authors: Kaufmann, Comins

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