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7J20: Difference between revisions
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==Internals== | ==Internals== | ||
The instrument is based on a [ | The instrument is based on a [[wikipedia:Monochromator|Czerny-Turner Monochromator]], | ||
in essence a narrow slit followed by a [ | in essence a narrow slit followed by a [[wikipedia:Diffraction grating|diffraction grating]]. | ||
A [ | A [[wikipedia:Vidicon|vidicon tube]] scans the optical spectrum | ||
and produces a periodic electric signal which is then displayed by the scope mainframe. | and produces a periodic electric signal which is then displayed by the scope mainframe. | ||
[[File:7J20-principle.jpg | thumb | 400px | center | Operating principle (click to enlarge) ]] | [[File:7J20-principle.jpg | thumb | 400px | center | Operating principle (click to enlarge) ]] | ||