Fig. 3

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Intensity maps of comet C/2014 B1 (Schwartz) in the R filter obtained with the 2 m RCC telescope on 2017 January 31. The color scale does not reflect the absolute brightness of the comet. Panel a shows the co-added composite image of the comet with the isophots differing by a factor of ; panel b is the original image (a) processed by a rotational gradient method (Larson & Sekanina 1984); panel c is the original image (a) after division by a 1/ρ profile (Samarasinha & Larson 2014). The nucleus location is marked with a cross in each panel. Jet-like structures in the coma are labelled as J1 and J2. The arrows point in the directions of the Sun (⊙), north (N), east (E), and the negative projected heliocentric velocity vector of the comet (−V). The negative distance is in the solar direction, and the positive distance is in the anti-solar direction.
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