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ORIEL Spectroscopy Instruments

MS125™ 1/8 m Spectrograph

Key Features

  • 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


MS125™ 1/8 m Spectrograph

The MS125TM 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.

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 MS125TM, without realigning the instrument. Refer to Table 1 for a complete selection.

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.

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

To order a complete 77400 MS125TM Spectrograph, order a grating and 1 fixed slit (fixed slit holder included with spectrograph).


Non-imaging research applications