The achromatic telescope is a refracting telescope that uses an achromatic lens to correct for chromatic aberration. == How it works == When an image passes through a lens, the light is refracted at different angles for different wavelengths.
The achromatic telescope is a refracting telescope that uses an achromatic lens to correct for chromatic aberration. == How it works == When an image passes through a lens, the light is refracted at different angles for different wavelengths.
Source: Wikipedia "Achromatic telescope" · CC BY-SA 4.0
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