Nowadays we can obtain photometry of elliptical galaxies with the aid of CCD cameras.

This is much more accurate than using a simple photometer as the reading is discritised across the CCD chip. Light from neighbouring stars can be removed from the image and the light flux from the galaxy calculated more accuratly.

Pho`to*met"ric (?), Pho`to*met"ric*al (?), a. [Cf. F. photom'etrique.]

Of or pertaining to photometry, or to a photometer.

 

© Webster 1913.

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