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Vescent Photonics LLC - Lasers, Combs, Controls 4/15-5/15 LB
Photonics Dictionary

spectrographic slits

The slits in a spectrograph that form images of spectral lines. Slits may be bilateral or unilateral, and generally close down to 0.01 mm and open up to almost a whole millimeter. The edges of the slit jaws must be smooth, straight, sharp and parallel at all openings.
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