The Sciencetech 9055 is a 250mm asymmetric focal length modified Czerny-Turner monochromator. It has a flat field output for use as a spectrograph. This model has an f/3.5 aperture (for the "Fast" version with f/2.5, please see the 9055F). It has a computer controlled turret for automatic grating and wavelength selection. Both the input and output port are located on the front faceplate of the monochromator, and the system includes one SS80 slit at the input port.This system does not include gratings, software, or a host computer. If you require any of these components, please speak with your technical sales staff member.Refer to the technical datasheet for additional information.