Fig. 4
Chromaticity of the amplitude transmission of the aluminum prototype. Left: normalized amplitude transmission as a function of wavelength at different radii in the pupil (dotted vertical lines in Fig. 3), for which the value is indicated on the right side of each curve. Right: measured amplitude transmission at the four wavelengths as a function of the original specification. The dashed and dash-dotted lines show the 1 decade/decade and 0.5 decade/decade trends.
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