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Earth and Space Sciences · 术语表

什么是 Seeing?

Definition 2.6 University Earth and Space Sciences — Year 1 · 第 2 章 — Telescopes, Detectors and Photometry

The seeing at a site is the angular diameter of the image of a point source blurred by atmospheric turbulence in a long exposure, measured as the full width at half maximum of the image, in seconds of arc.

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