The Sciencetech 9055 is a 250 mm focal length modified Czerny-Turner monochromator, with a flat field output for spectrograph use. The standard model has an f/3.5 aperture. A "faster" model with larger optics for higher light throughput is also available in the 9055F monochromator, with f/2.5 aperture. Both models have a computer controlled, motorized turret for automatic grating and wavelength selection. Both input and output ports are situated on the front faceplate of the monochromator/spectrograph. Both models include one adjustable SS80 slit at the input port. The standard 9055 supports up to three 50 x 50 mm gratings whereas the larger optics 9055F supports up to two 64 x 64 mm (clear aperture) gratings
 Electronics The 9055/9055F utilizes a computer controlled, motorized turret for grating and wavelength selection. The motorized turret is powered by a single stepper motor mechanically coupled through a direct worm-and-gear drive. Sciencetech's universal MD-100 stepper motor electronics are used to control the stepper motor. The MD-100 is packaged inside the 9055/9055F housing and has an RS-232 interface to the computer. If USB interface is selected, a USB converter electronics module is then connected to the MD-100's RS-232 output inside the 9055 housing. The native RS-232 signals of the MD-100 is then converted into USB format for interface to the computer. Correspondingly, a USB converter Windows software driver needs to be loaded so that the USB interface is recognized as a virtual RS-232 serial port by the Windows operating system.
Other Similar Monochromator/Spectrograph Models For high resolution applications, please also consider the Sciencetech 9035 (350 mm focal length) and 9057 (500 mm focal length) monochromator/spectrograph. These models are extended versions of the 9055 and have similar features.