Comet C/2014 A4 (SONEAR) in the g-sdss filter (top panel) and r-sdss filter (bottom panel), obtained at the BTA/SCORPIO-2. (a) direct images of the comet in relative intensity; (b) relative intensity image processed using the division by the 1/ρ profile method (Samarasinha & Larson 2014); (c) image processed by a rotational gradient method (Larson & Sekanina 1984); (d and e) relative intensity images to which a division by azimuthal average and renormalization methods were applied, respectively (Samarasinha & Larson 2014). The relative intensities of adjacent contours of isophotes differ by a factor of . The color scale does not reflect the absolute brightness of the comet, and is used only to distinguish the areas of intensities that differ by . ρ is the distance from the cometary optocenter. J is a fan-like structure in the near-nucleus coma. The arrows point in the direction of the Sun (⊙), north (N), east (E), and the velocity vector of the comet as projected onto the sky plane (V).