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Asinh MagnitudeMagnitudes within SDSS-I/II are expressed as inverse hyperbolic sine (or "asinh") magnitudes, sometimes referred to informally as luptitudes. The transformation from linear flux measurements [..]
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Asinh MagnitudeMagnitudes within SDSS-I/II are expressed as inverse hyperbolic sine (or “asinh”) magnitudes, sometimes referred to informally as luptitudes. The transformation from linear flux measurements to asinh magnitudes is designed to be virtually identical to the standard astronomical magnitude at high signal-to-noise ratio, but to switch over to linear be [..]
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