Astrophysics (index)

Photometric Redshift

(method of estimating redshift without spectroscopy)

Photometric Redshift is an estimate of an object's Redshift (z) by observing an object using Photometry. The appearance of various objects at various redshifts under various filters (Photometric System) are calculated and compared to observed bodies for a match. Spectroscopic Redshift has become more common with the development of more kinds of Spectroscopes.


(measure,EMR,photometry,redshift)
http://en.wikipedia.org/wiki/Photometric_redshift

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