Fig. 10
Comparison of intensity images of Betelgeuse obtained with VLTI/PIONIER (upper images, from Montargès et al. 2015) and with TBL/Narval (lower images) during the quasi-simultaneous observations of 2014: January (left) and November (right). The images from polarimetry correspond to spot1 (from Fig. 9 in January, with χ + 180° in November). North is up and east is left for all images.
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