Model 247 Spectrometer

The Model 247 is a Basic Spectrometer Module Table Model, Two Meter Grazing Incidence Spectrometer consisting of a stainless steel vacuum chamber and grating housing, flange for mounting matching pumping system, face plates for attaching entrance slit and bellows for vacuum connections to exit slit assembly, camera or MCP/PDA attachments. Stationary bilateral entrance slit assembly with positions from 82° to 88°, precision machined stainless steel curved ways, stainless steel bellows to connect entrance slit assembly to the main chamber. Entire unit is mounted on a granite base plate for extreme stability and isolation from vibration and ready to attach traveling monochromator section 8181-3368-0, spectrograph 8183-0247-3, or MCP/PDA Accessory 8105-0028, etc.

Specifications

Focal Length	2.2 meter concave grating
Angle between entrance and exit beams	176 to 150 degrees
f / No.	42.6
Wavelength Range	<1 nm to 250 nm
Grating Ruled Area	30 mm x 50 mm
Spectrograph Accepts	2" x 20" plate or two 2" x 10" plates

Performance

Grating (G/mm) (others available)	3600	2400	1200	600	300
Wavelength Range (nm) From <1 to	20.8	32	62.5	125	250
Blaze Angle	holographic	holographic	2deg 4min	1deg 30min	2deg 4min
Resolution (nm)	0.003	0.005	0.008	0.015	0.03
Dispersion (nm/mm)	.011 to 0.05	0.1	.023 to .15	.037 to .30	.064 to .60

McPherson, Inc.