Obr. 3 Ebertův monochromátor

Ebert monochromator - also known as the Fastie-Ebert monochromator

A quarter meter Ebert Monochromator (Fastie-Ebert monochromator) uses two gratings, each blazed at different wavelengths. The gratings are mounted on one assembly and are interchanged by rotation of an external control knob. To work in regions other than the visible, or if only one grating is needed, use the 82-415 model and choose one or two gratings to cover any desired region from 200 nm to 40 µm. Two bayonet-type slits are provided which can be removed and interchanged for other slits. This feature allows resolution or high throughput measurements, depending on the width of the slit used. An adjustable slit is also available.

The MonoSpec 25 features an Ebert optical design with the entrance and exit slits in a straight line configuration. This optical system provides high throughput with an aperture of f/3.5. The optical system has an all-aluminum casting.