slit spectrograph

slit spectrograph

[′slit ′spek·trə‚graf]
(optics)
A type of astronomical spectrograph that uses a slit to provide resolution.
References in periodicals archive ?
IRIS's 20-cm telescope will have a slit spectrograph providing both high resolution (0.3 arcsecond) and high cadence (as often as one spectrum per second), as well as a wider-field ultraviolet camera to provide context.