Fig. 7

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Comparison of the normalized profiles of the surface brightness of comet C/2014 B1 (Schwartz) with the averaged brightness profile of field stars (black dashed line) measured in the g-sdss (a) and r-sdss (b) images on 2017 January 23. The observed profiles were measured through the central pixel with maximum intensity and the coma perpendicular to the J1-J2 direction: PA = 89° for the solar direction and PA = 269° for the anti-solar direction (red solid line) and along both jets in the directions PA(J1)= 179° and PA(J2) = 350° (blue solid line).
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