A spectroscope equipped to photograph or otherwise record spectra.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "spectrograph" in a sentence
"The tip-off was its spectrum, the rainbow of colors that appears when starlight is smeared out in an instrument called a spectrograph."
"A spectrum is created when an instrument called a spectrograph spreads light from an object apart into a rainbow of different wavelengths."
"NASA calls the spectrograph is its primary black-hole hunter."