A compact and versatile vacuum ultraviolet monochromator. A selection of aberration-corrected diffraction gratings is available so you can tailor the instrument to your wavelength of interest and application. Connect this instrument directly to your vacuum plasma physics experiment or build an intense UV tunable source. It is available as a scanning monochromator, as a spectrometer, or as a spectrograph with microchannel plate or direct-detection CCD. The Model 234/302 is popular in systems due to its compact design, high throughput and resolution. It is also available with an additional entrance or exit port.