Model 262 10.6-meter focal length
high resolution Grazing Incidence Spectrograph

Historical Fact McPherson designed and built the first commercial grazing incidence spectrometer for Columbia University in 1967. Until then a void between the operating range of crystal and Normal Incidence monochromators existed. The grazing incidence geometry pushed the limits of reflective optics, diffraction gratings and precision machining. A 10.6 meter focal length Grazing Incidence instrument was built for the National Institute of Standards and Technology which (NIST) uses large film plates for operation as a spectrograph. This instrument collects unsurpassed data to this day.
McPherson 10.6-meter focal length Grazing Incidence Spectrograph at NIST