The Sciencetech 9057F is a fast half meter motorized Czerny-Turner monochromator (and spectrograph) with an f/5.9 aperture. This is a "faster" model with larger optics for higher light throughput compared to the standard 9057 with f/8 aperture. 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. If USB interface is selected, a USB converter electronics module converts the native RS-232 signals of the MD-100 into USB format for onward interface to the computer, where a USB converter software driver needs to be installed so that the USB interface is recognized as a virtual RS-232 serial port by the operating system.

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.