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MS125™ 1/8 m Spectrograph

Model 77400 MS125™ 1/8 m Spectrograph with LineSpec™ CCD Detector mounted to output

MS125™ 1/8 m Spectrograph

Versatile instrument - interchangeable slits and gratings
Compact and low cost
Low stray light - no re-entrant spectra
Impressive resolution 0.22 nm (with 1200 l/mm grating and 2048 element array)
Available dual grating model

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Overview
Specifications
Ordering
Drawings
Literature & Downloads

The MS125^TM is one of our most popular spectrographs. It is a low cost, manually operated, 1/8 m spectrograph with superior performance. It’s versatility and performance makes it ideally suited for non-imaging research applications. It’s small size and simple design make it suitable for OEM applications, in custom configurations.

Optical Configuration

Fig. 1 Optical configuration of MS125™ Spectrograph

Negligible Stray Light

We designed the MS125™ to ensure minimal stray light. The instrument uses baffles to prevent light scatter, and low stray light gratings.

Calibrated Micrometer Drive

The MS125™ uses a calibrated micrometer drive for wavelength tuning. The micrometer is calibrated to read 1 nm per graduation for a 1200 l/mm grating.

Interchangeable Gratings

You can easily interchange gratings in the MS125^TM, without realigning the instrument. Refer to Table 1 for a complete selection.

Table 1 Available Grating for MS125™ 1/8 m Spectrograph

Model	Line Density (I/mm)	Blaze Wavelength	Grating Type	Peak Efficiency (%)	Spectral Resolution (nm)*	Multichannel Array Bandpass (nm)**	Primary Wavelength Region (nm)***	Instrument's Upper Wavelength Mechanical Limit(For specified grating)
77419	2400	250	Holographic	65	0.11 nm	84	200 - 500	500 nm
77420	2400	400	Holographic	65	0.11 nm	81	230 - 500	500 nm
77421	1800	500	Holographic	80	0.14 nm	109	300 - 670	670 nm
77410	1200	250	Holographic	80	0.22 nm	168	180 - 650	1000 nm
77411	1200	350	Ruled	80	0.22 nm	170	200 - 1000	1000 nm
77464	1200	500	Ruled	80	0.22 nm	170	280 - 1600	1000 nm
77412	1200	750	Ruled	80	0.22 nm	163	450 - 1000	1000 nm
77463	1200	1000	Ruled	80	0.44 nm	160	550 - 1600	1000 nm
77413	600	200	Ruled	70	0.43 nm	338	180 - 500	2000 nm
77414	600	400	Ruled	85	0.43 nm	338	250 - 1300	2000 nm
77415	600	750	Ruled	75	0.43 nm	338	450 - 2000	2000 nm
77465	600	1000	Ruled	80	0.86 nm	338	600 - 2500	1000 nm
77455	600	1250	Ruled	85	0.86 nm	333	750 - 2000	2000 nm
77456	600	1600	Ruled	90	0.86 nm	325	900 - 2000	2000 nm
77416	400	350	Ruled	65	0.65 nm	503	200 - 800	3000 nm
77417	400	500	Ruled	80	0.65 nm	505	300 - 1200	3000 nm
77457	400	1600	Ruled	85	0.65 nm	505	900 - 2900	3000 nm
77422	300	300	Ruled	75	0.86 nm	668	200 - 750	4000 nm
77458	300	1000	Ruled	85	0.86 nm	675	575 - 2500	4000 nm
77459	246.16	226	Ruled	60	1.08 nm	810	190 - 450	4800 nm

Input Slit

The MS125™ Spectrograph comes with an input slit holder; we offer a selection of fixed slits from 10 to 200 µm wide. The choice depends upon resolution and throughput requirements.

Mounting

Rod mounting offers the greatest flexibility; you can vary the optical axis height to match your source or detector.

To order a complete 77400 MS125^TM Spectrograph, order a grating and 1 fixed slit (fixed slit holder included with spectrograph).

Specifications

Focal Length	120
F/number	F/3.7
Usable Wavelength Range	180 m to 24 µm with interchangeable grating
Wavelength Accuracy	1 nm
Wavelength Reproducibility	1 nm
Weight	3.3 lbs (1.5 kg)

* With 1200 l/mm grating.

Model	Description	avail raw	Availability	price raw	Price	Qty. MULTI ADD
77410	MS125 Holographic Grating, 1200 lines/mm, 250nm Blaze, 180-650nm Primary	5	5 Weeks	704	$704.00	ADD
77417	MS125 Ruled Grating, 400 lines/mm, 550nm Blaze, 300-1200nm Primary	6	6 Weeks	366	$366.00	ADD
77420	MS125 Holographic Grating, 2400 lines/mm, 400nm Blaze, 230-500nm Primary	5	5 Weeks	704	$704.00	ADD
77457	MS125 Ruled Grating, 400 lines/mm, 1600nm Blaze, 900-2900nm Primary	2	2 Weeks	366	$366.00	ADD
77411	MS125 Ruled Grating, 1200 lines/mm, 350nm Blaze, 200-1000nm Primary	6	6 Weeks	366	$366.00	ADD
77421	MS125 Holographic Grating, 1800 lines/mm, 500nm Blaze,	6	6 Weeks	704	$704.00	ADD
77458	MS125 Ruled Grating, 300 lines/mm, 1000nm Blaze, 575-2500nm Primary	6	6 Weeks	366	$366.00	ADD
77728	Fixed Slit, 100 µm Width, 3 mm Height	0	In Stock	163	$163.00	ADD
77220	Fixed Slit, 25 µm Width, 3 mm Height	0	In Stock	392	$392.00	ADD
77221	Fixed Slit, 50 µm Width, 3 mm Height	0	In Stock	294	$294.00	ADD
77413	MS125 Ruled Grating, 600 lines/mm, 200nm Blaze, 180-500nm Primary	6	6 Weeks	366	$366.00	ADD
77416	MS125 Ruled Grating, 400 lines/mm, 350nm Blaze, 200-800nm Primary	6	6 Weeks	366	$366.00	ADD
77455	MS125 Ruled Grating, 600 lines/mm, 1250nm Blaze, 750-2000nm Primary	6	6 Weeks	366	$366.00	ADD
77464	MS125 Ruled Grating, 1200 lines/mm, 500nm Blaze, 280-1600nm Primary	6	6 Weeks	412	$412.00	ADD
77465	MS125 Ruled Grating, 600 lines/mm, 1000nm Blaze, 600-2500nm Primary	6	6 Weeks	375	$375.00	ADD
77414	MS125 Ruled Grating, 600 lines/mm, 400nm Blaze, 250-1300nm Primary	6	6 Weeks	366	$366.00	ADD
77415	MS125 Ruled Grating, 600 lines/mm, 750nm Blaze, 450-2000nm Primary	6	6 Weeks	366	$366.00	ADD
77456	MS125 Ruled Grating, 600 lines/mm, 1600nm Blaze, 900-2000nm Primary	6	6 Weeks	366	$366.00	ADD
77412	MS125 Ruled Grating, 1200 lines/mm, 750nm Blaze, 450-1000nm Primary	6	6 Weeks	366	$366.00	ADD
77419	MS125 Holographic Grating, 2400 lines/mm, 250nm Blaze, 200-500nm Primary	6	6 Weeks	704	$704.00	ADD
77459	MS125 Ruled Grating, 246.16 lines/mm, 226nm Blaze, 190-450nm Primary	4	4 Weeks	366	$366.00	ADD
77730	Fixed Slit, 200 µm Width, 3 mm Height	0	In Stock	163	$163.00	ADD
77400	MS125 Spectrograph, 1/8 m, Grating and Slit Ordered Separately	5	5 Weeks	2359	$2,359.00	ADD
77422	MS125 Ruled Grating, 300 lines/mm, 300nm Blaze, 200-750nm Primary	6	6 Weeks	366	$366.00	ADD
77463	MS125 Ruled Grating, 1200 lines/mm, 1000nm Blaze, 550-1600nm Primary	6	6 Weeks	366	$366.00	ADD
77222	Fixed Slit, 10 µm Width, 2 mm Height	3	3 Weeks	392	$392.00	ADD

Fig. 2 Dimensional diagram of 77400 MS125^TM 1/8 m Spectrograph.

Newport Resource e-Catalogs *

*e-Catalog pages include the most current information available at the time of printing.