Comet 12P images in the Rc filter during different outbursts. Each row shows a different outburst. Columns, from left to right, correspond to pre-outburst image, coma around 4 days after outburst, same image after subtraction by an azimuthal median profile, coma around 7 days after outburst, and same image after subtraction by an azimuthal median profile. The yellow and the white arrows are the anti-sunward and the negative of the target heliocentric velocity vector directions, respectively. The red cross indicates the photocentre. Images are oriented with north being up and east to the left.