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Fig. 9.


Azimuthally averaged radial profiles ctn6( ρ) (left) and azimuthal profiles ctn6(r, ϕ) for r = 50, 80, 120 and 180 pix (right) corresponding to ρ = 0.18″, 0.29″, 0.43″, and 0.65″, respectively for the PSFs of HD 183143 shown in Fig. 8. Also indicated as gray shading are the standard deviations of the azimuthal points σ(ctn6(r, ϕ). The location of the azimuthal cuts are indicated in the ct6n(r)-panels and in Fig. 8.

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