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Antoniadi scale


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A scale of seeing conditions, used by amateur astronomers, that describes the effect of atmospheric motions on an image, usually that of the Moon or a planet. Its categories are:I perfect, without a quiver II slight undulations, but with calm periods lasting several seconds III moderate, with some greater air movements IV poor, with the image in constant movement V very bad, making observations very difficultIt was devised by E. M. Antoniadi.

I perfect, without a quiver II slight undulations, but with calm periods lasting several seconds III moderate, with some greater air movements IV poor, with the image in constant movement V very bad, making observations very difficult

Subjects: Astronomy and Astrophysics.


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