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diffraction rings


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The faint rings that appear around the Airy disk of a star image as seen through a telescope; they are a result of diffraction. The Airy disk itself is in effect ring zero, with the first ring having as little as 1.7% of its intensity. Diffraction rings are most noticeable in instruments of small aperture. Their size decreases with increasing aperture.

Subjects: Astronomy and Astrophysics.


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