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  • GERSH Kit
  • GERSH Kit
  • GERSH Kit

Gershun Tube Kit

Item Code: GER-KIT

Lead Time: 2 weeks



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The Gershun Tube Kit is an optical assembly that attaches to a spectrometer or SMA 905-terminated optical fiber to control the FOV of the setup. Each assembly comprises a conical base and middle and outer barrels that are threaded together. User-interchangeable apertures can be installed to adjust FOV at different increments from 1°-28°.


  • Control Field of View – restrict FOV to know values from 1°-28°
  • Versatile – couples to fibers or directly to spectrometers
  • Easily configured – switch out apertures within seconds


Subject to change depending on model type


SMA 905-terminated optical fiber or spectrometer
Black anodized aluminum
Aperture Sizes:
1°, 3°, 10° and 14°
Engineering FOV Options:
1°, 2°, 3°, 6°, 8°, 10°, 14°, 16°, 20° and 28°
Tube Interior:
Bead-blasted surface reduces off-axis reflections

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