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Essentials of a Refracting Telescope

Essentials of a Refracting Telescope
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Description: A refracting telescope consists of a large, long-focal-length objective lens that collects and focuses light rays
and a small, short-focal-length eyepiece lens that restraightens the light rays. The lenses work together to
brighten, resolve, and magnify the image formed at the focal plane of the objective lens.

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Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=15883
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