Fig. 2.
Example of sideband extraction with the PESCC. For the images of channels 1 and 2 (I1 and I2) in Fig. 1, the OTFs are calculated. The OTF1 contains the two sidebands with wavefront information and the RH peak, but these are overwhelmed by the central peak. When OTF2, which only contains the central peak, is subtracted from OTF1, the two sidebands and RH peak are revealed.
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