Model 251 Spectrometer

Model 251 Basic Spectrometer is an UHV Spectrometer of rugged antimagnetic stainless steel construction with dual grating carousel, to remotely interchange grating by carousel indexer, with in vacuo focus adjustment, having interchangeable dove tail guided fixed width entrance slit and limiting leak baffle supplied with unit (25, 50, 100 and 300 mm width). Normally supplied with vacuum tight blank seal flanges and back filled with dry nitrogen for ready installation. Auxiliary ports are provided for:

• Vacuum pumping.
• Alignment testing of zero order and diffracted beams at normal incidence.
• Vacuum gauge port.
• Grating focus and indexer feed throughs.

McPherson, Inc.