Chapter 7- Components of Optical Instruments

The use of entrance and exit slits convolutes this broadening as a triangular function - the slit function. Spectral bandpass, s, is the width at half-height of the wavelength distribution as passed by the exit slit. s = Rd W. where Rd is the reciprocal linear dispersion and W is the slit width. The slit-width-limited resolution s is = 2s = 2 Rd W ................
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