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Fig. 3


Overview of the FOV in different spectral windows, denoted at the upper/lower left inside each image. The inclined white line denotes the limb, the black vertical line at the bottom at x ~ 23′′ a jump of the AO. For this reason, the red shaded area in the upper right corner of each image could not be used after alignment to the rest of the FOV. The blue lines in the first two columns of the top row denote cuts through the FOV used later on; the dashed white line in the line-core map marks a limb distance of 2.5 Mm. The fourth column in the top row is taken at a single fixed wavelength and thresholded to enhance the visibility of off-limb structures.

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