What the hell is a Johnson V Magnitude?

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The Johnson V Magnitude is not the same as Apparent Magnitude, though they are related concepts in astronomy. The Johnson V Magnitude specifically measures light using a filter that captures only frequencies within the human visual range, indicated by the 'V' designation. This measurement is crucial for photometric studies, allowing astronomers to analyze the brightness of celestial objects. Understanding the distinction between these two magnitudes is important for accurate astronomical observations. The Johnson V Magnitude plays a significant role in the field of photometry.
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What the hell is a Johnson V Magnitude?

Is the Johnson V Magnitude the same as the Apparent Magnitude? I don't think it is. Are they related?
 
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Johnson V magnitude is measured using a filter that 'clips' light frequencies save those in in the human visual range [hence the 'V' designation]. They are widely used in photometric studies.
 
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