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Instruments and Experimental Techniques

, Volume 53, Issue 4, pp 549–552 | Cite as

Investigation of spectral resolution in a Czerny Turner spectrograph

  • H. Mohammadi
  • E. Eslami
General Experimental Technique

Abstract

This article describes a smiple and low-cost Czerny-Turner spectrograph capable to operate in spectral range from approximately 350–900 nm. A sine drive assembly was used for linearizing the wavelength scale. The wavelength and pixel position calibration problem have been solved using light sources with known wavelength emission lines, and a polynomial fitting method to find the relationship between diffraction wave-lengths and pixel numbers. The pixel resolution ∼0.015 nm/pixels and FWHM ∼0.1 nm at 170 μm entrance slit width are sophisticated enough to serve well in a research laboratory, yet is simple and inexpensive enough to be affordable for educational use.

Keywords

Astigmatism Pixel Resolution Entrance Slit Exit Slit Wavelength Scale 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • H. Mohammadi
    • 1
  • E. Eslami
    • 1
  1. 1.Department of PhysicsIran University of Science and Technology NarmakTehranIran

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