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This pedagogical document about stellar photometry - aimed at those for whomastronomical arcana seem arcane - endeavours to explain the concepts ofmagnitudes, color indices, absolute magnitudes, distance moduli, extinctions,attenuations, color excesses, K corrections, and bolometric corrections. Iinclude some discussion of observational technique, and some discussion ofepistemology, but the primary focus here is on the theoretical or interpretiveconnections between the observational astronomical quantities and the physicalproperties of the observational targets.

Magnitudes, distance moduli, bolometric corrections, and so much more