Abstract
Many workers have used channeled spectra produced by a Fabry-Perot interferometer to calibrate infrared spectrometers. In this paper the effects of the finite height of the spectrometer slit and the finite aperture of the condensing lens on the visibility of the spectra are discussed. The way in which maximum accuracy of calibration is to be obtained for any given experimental arrangement is indicated.
© 1953 Optical Society of America
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