Model 209 Spectrometer

Model 209 1.33 meter Czerny-Turner high resolution scanning monochromator, manual drive with wavelength counter. This monochromator has an effective aperture of f/9.4 and comes complete with the following:

• Bilateral entrance and exit slits, continuously adjustable from 5 to 4000 mm. Height adjustable to 20 mm., includes manual shutter.
• Collimating and focusing mirror assemblies. A1 and MgF₂ coated is standard For IR application Au (Gold) coated collimating, focusing mirrors and gratings can be supplied.
• "SNAP-IN" grating holder (US Pat. # 3433557) to accept 120 x 140 mm and 110 x 110 mm plane gratings.
• Two grating positions, 0° to 50° and auxiliary 20° for echelle gratings and wavelength range extension.

Specifications

Focal Length	1.33 meter
Angle between entrance and exit beams	0, 90, or 180 degrees
f / No.	9.4
Wavelength Range	185 nm to 78 um
Grating Size	120 mm x 140 mm
Wavelength Accuracy (with 1200 G/mm grating)	+/-0.05 nm
Wavelength Reproducibility (with 1200 G/mm grating)	+/- 0.005 nm
Camera Attachment Accepts	4" x 5" film or polaroid back

Grating (G/mm) (others available)	2400	1800	1200	600	300	150	75	20
Wavelength Range from 185 nm to	650 nm	860 nm	1.3 um	2.6 um	5.2 um	10.4 um	20.8 um	78 um
First Order Littrow Blaze	240 nm	holo	250 nm	300 nm	750 nm	1.25 um	2.0 um	45 um
	300 nm		300 nm	500 nm	1.0 um	2.5 nm	3.0 nm
	holo		500 nm	750 nm	3.0 um	4.0 um	8.0 um
			750 nm	1.0 um	4.0 um	6.0 um	10.0 um
			1.0 um	1.85 um		8.0 um	12.0 um
Resolution (nm) at 313.1 nm	0.005	0.007	0.01	0.02	0.04	0.08	0.16	0.60
Dispersion (nm/mm)	0.31	0.41	0.62	1.24	2.48	4.96	9.92	37.2
Wavelength Range at Focal Plane nm	15.5	20.5	31.0	62.0	124.0	248.0	496.0	1860
Theoretical Spectral Bandwidth at 10um exit slit (nm)	0.0031	0.0041	0.0062	0.0124	0.0248	0.0496	0.0992	0.372

McPherson, Inc.