Fig. 2
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Observed uv-coverage (black and red points) of the EHT data array (observation of M 87 on 5 April 2017) and masks defined by the DoG wavelets listed in Table 3 (color maps). The masks are the Fourier transform of the respective wavelets and they define ring-like filters in Fourier domain. The visibilities highlighted by a specific filter are plotted in red.
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