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Photometry of the Pleiades

Photometry of the Pleiades. The Pleiades Cluster “The Seven Sisters”. Aperture. The Magnitude System. Absolute Magnitude A measure of the intrinsic brightness of a star 10 parsecs away Apparent Magnitude How bright an object appears Measured with a photometer.

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Photometry of the Pleiades

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  1. Photometry of the Pleiades The Pleiades Cluster “The Seven Sisters” Aperture

  2. The Magnitude System • Absolute Magnitude • A measure of the intrinsic brightness of a star • 10 parsecs away • Apparent Magnitude • How bright an object appears • Measured with a photometer

  3. Computing Distances to Stars Absolute Magnitude Distance in Parsecs Apparent Magnitude

  4. Computing Distances to Stars Absolute Magnitude Distance in Parsecs Apparent Magnitude

  5. Let’s go to room 315.

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