The 207V from McPherson is a 670 mm focal length optically fast f/4.7 monochromator with a vacuum tight housing. It has a stainless steel housing capable of 10E-6 torr vacuum, this instrument works unfettered over a very wide wavelength range. Depending on the grating(s) installed it can go from 110 nanometers to 15 microns. The vacuum construction is useful for both deep ultraviolet and VUV work and also for the Infrared. It provides best FWHM spectral resolution; aspheric optics are installed for imaging. The oversize output focusing mirror reduces intensity losses and delivers spectra to a large 50 mm focal plane. Precise and durable slits are provided for coupling free-space or fiber optic signals. Stigmatic performance with off axis parabolic optics is available for the 207V too. This monochromator is ideal for applications in astrophysics, material and life sciences.