Stray light in a monochromator is analyzed. Stray coefficients are defined which allow the assessment, prediction, and correction of stray light errors. A method of measuring these stray coefficients by means of a discharge lamp and filters is described. The effect of slit dimensions is discussed. Measurements on the University of Cape Town single monochromator illustrate the method and indicate the possibilities and limitations of a single monochromator for lamp spectrophotometry.
H. D. EINHORN and D. E. H. NAUDÉ, "Stray Light in a Monochromator (Analysis and Prediction Based on Measurements by Means of Discharge Lamps and Filters)," J. Opt. Soc. Am. 53, 721-721 (1963)