The 235 is the McPherson 500 mm focal length Seya-Namioka monochromator. This optical system is housed in a clean stainless steel housing capable of achieving 10-6 torr vacuum. It delivers typical resolution of 0.05 nm with a 1200g/mm grating. An angle of 70° 15' subtends the entrance and exit slit arms. ...
By McPherson based in Chelmsford, MASSACHUSETTS (USA). from Monochromators, Spectrometers & Spectrographs - Deep UV and Vacuum Ultraviolet (and into the UV-Vis and IR) Product line
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