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Fig. 3.


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USET white-light image taken at 10:00:53 UCT on 20 March 2015. Celestial North is in the vertical direction (P angle: −25.1°; North solar pole tilted towards upper right). Except for a few faculae near the South-West limb and a couple of small pores in the North-West sector, the unobstructed part of the solar disk is almost featureless. Note: the fuzzy grey circles are artefacts due to dust specks.

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