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| pho·to·graph·ic mag·ni·tude (plural pho·to·graph·ic mag·ni·tudes) |
noun |
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| Definition: |
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brightness of star measured photographically: the magnitude of a star determined by measuring its size on a photographic plate. Depending on the color of the star, photographic magnitude and visual magnitude can differ because the eye and standard photographic plates have different color sensitivities.
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