Available with Gold coated diffraction grating, Model 251MX works from 1–100 nm (10–1500 eV), making it useful for measurement of SXR, EUV, and VUV radiation and emission spectra with sub-nm spectral resolution. To resolve closely spaced spectral lines, adjustable slit width provides for best light throughput. Adjustable detector mount accommodates direct-detection digital cameras or microchannel plate intensifiers. Applications include plasma physics, astrophysics, spectral test and calibration.