optical spectrograph

optical spectrograph

[′äp·tə·kəl ′spek·trə‚graf]
(spectroscopy)
An optical spectroscope provided with a photographic camera or other device for recording the spectrum made by the spectroscope.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The second instrument was an optical spectrograph that takes an object's light and disperses it into a rainbow, allowing astronomers to measure the intensity in roughly 2,000 wavelength bands.
Mapping the universe's: ancient sound waves
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