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7J20: Difference between revisions
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Rapid scan means that it can capture the spectrum quickly enough to show spectral changes at temporal resolution of a few milliseconds. | Rapid scan means that it can capture the spectrum quickly enough to show spectral changes at temporal resolution of a few milliseconds. | ||
The instrument is based on a [https://en.wikipedia.org/wiki/ | The instrument is based on a [https://en.wikipedia.org/wiki/Monochromator Czerny-Turner Monochromator], | ||
in essence a narrow slit followed by a [https://en.wikipedia.org/wiki/Diffraction_grating diffraction grating]. | in essence a narrow slit followed by a [https://en.wikipedia.org/wiki/Diffraction_grating diffraction grating]. | ||
A [https://en.wikipedia.org/wiki/Vidicon vidicon tube] scans the optical spectrum and produces a periodic electric signal which is then displayed by the scope mainframe. | A [https://en.wikipedia.org/wiki/Vidicon vidicon tube] scans the optical spectrum and produces a periodic electric signal which is then displayed by the scope mainframe. | ||