New analysis of the theory of rowland ghosts.
False spectra produced by diffraction gratings are analyzed. A better criteria for labeling Rowland ghosts is proposed. Assuming that only one periodic error affects the ruling of the grating, an expression for the ghosts' intensities has been derived; it assigns different intensities to ghosts symmetrically placed on each side of spectral lines in any diffraction order.
Calatroni
J A
JA
Garavaglia
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M