The Sciencetech 9057 is a half meter motorized Czerny-Turner monochromator (and spectrograph) with an f/8 aperture. A "faster" model with larger f/5.9 optics for higher light throughput is also available as the 9057F. Both models utilize a computer controlled motorized turret for automatic grating and wavelength selection. The regular 9057 model supports up to three 50 x 50mm gratings whereas the larger optics 9057F model supports up to two 64 x 64mm (clear aperture) gratings.

 Electronics The 9057/9057F has 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 electronics is packaged inside the 9057/9057F housing and has an RS-232 interface to the computer. For USB interface a USB converter electronics module is connected to the MD-100's RS-232 output inside the 9057 housing and a USB converter driver needs to be loaded on the computer so that it will recognize the USB interface as a virtual RS-232 serial port.

 Other Similar Spectrograph Models For high resolution spectrograph applications, please also consider the Sciencetech 9040 Spectrograph. It also has a half meter focal length, but can achieve higher light throughput due to its larger grating sizes of 84 mm or 110 mm. The drawback of the 9040 is its higher price, and it does not have a multi-grating turret. For spectrograph applications, this should not matter.