Spectrograph Selection Guide

We offer 1/8 m and 1/4 m manually operated and fully automated monochromators and spectrographs. Either selection is suited to a wide variety of applications. We encourage you to call an Applications Engineer once you've narrowed your application requirements. They can further help in your selection by discussing your needs and provide a straightforward comparison of our instruments. Optical accessories to complement your monochromator or spectrograph, i.e. integrating spheres, filter wheels, focusing lens assemblies, fibers optics, are also available.

Selecting a Spectrograph

Click Spectrographs to shop or browse all of our standard models, or select a series below for more information on our products and capabilities. We also offer a complete line of Spectrometer Accessories.

Model	MS125™	MS127i™	MS260i™	MS257™
Features	• 1/8 m Imaging Spectrograph • Interchangeable slits and gratings • Compact and low cost • Low stray light - no re-entrant spectra • Impressive resolution up to 0.22 nm • Available dual grating model	•1/8 m Imaging Spectrograph • Resolves multiple spectral tracks with excellent spatial separation • Built-in shutter for zero referencing and for multi-track applications • Low stray light, minimal rediffracted light • Easily changeable gratings for true versatility	• 1/4 m Imaging Spectrograph • RS-232, USB and GPIB models models • High resolution • Up to three gratings, with computer controlled grating change • Built-in shutter • Built-in filter wheel control	• 1/4 m Monochromator or Imaging Spectrograph Configurations • 4 grating turret with automatic grating switching • Two flat field output ports with automatic port switching • Negligible stray light and no re-entrant spectra • USB, RS-232, or GPIB options
Focal Length	120 mm	138.5 mm	260 mm	257 mm
F/#	F/3.7	F/3.7	F/3.9	F/3.9
Magnification	N/A
Number of Gratings Supported	1	1	Up To 3	Up to 4
Wavelength Drive	Micrometer	Manual	Motor Driven	Motor Driven

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