An Etymological Dictionary of Astronomy and Astrophysics

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echelle spectrograph

بیناب‌نگار ِ نرده‌ای

binâbnegâr-e narde-yi (#)

Fr.: spectrographe à échelle

A spectrograph that uses an echelle grating to disperse the light.

See also: → echelle grating; → spectrograph.