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Fig. 2

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Cavity maps and reflectivity maps of the high-resolution (HR) and low-resolution (LR) etalons of CRISP, obtained by first recording images while scanning the two etalons together, then scanning the LR etalon across the passband of the HR etalon tuned to a continuum wavelength, and finally fitting the scanned profiles from the Fourier Transform Spectrometer at the McMath-Pierce Telescope (Neckel & Labs 1984).

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