Abstract

Optical transfer functions (O.T.F.'s) for the correction of spectral images formed by a simple plane-grating monochromator were determined by both of theoretical and experimental procedures ; the ray-tracing method and a spectrogram of monochromatic rays were respectively used to determine line spread functions, and their Fourier transforms gave the the O. T. F.s. A spectrogram of the Na D-doublet poorly resolved was satisfactorily corrected by means of the both O. T. F.'s.

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