Dawes' limit


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Dawes' limit

[′dȯz ‚līm·ət]
(optics)
The resolving power of a telescope, limited by diffraction effects, is 4.5/ a seconds of arc, where a is the aperture in inches.
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References in periodicals archive ?
While a typical eye can resolve Dawes' limit with as little as
Resolution of Jovian features should not be limited to Dawes' limit (see J.
This relationship holds true only for double stars of equal brightness and approximately 6th magnitude -- for brighter, fainter, and unequal pairs, especially, the Dawes' limit departs markedly from actual results at the telescope.