Investigation of spectral resolution in a Czerny Turner spectrograph |
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Authors: | H Mohammadi E Eslami |
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Affiliation: | 1.Department of Physics,Iran University of Science and Technology Narmak,Tehran,Iran |
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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. |
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Keywords: | |
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