Color maps of the coma of 41P. Top row: color maps in SDSS r-i (field of view at the distance of the comet in parenthesis, date format in Year/month/day): left panel: on 2017 March 28 (5260 × 5260 km). Middle panel: on 2017 May 05 (7590 × 7590 km). Right panel: on 2017 May 17 (8450 × 8450 km). Bottom row: color maps on 2017 April 30 (field of view: 7080 × 7080 km at the comet): SDSS g-i (left panel), SDSS g-r (middle panel), SDSS r-i (right panel). The images are smoothed by a 5 × 5 pixels boxsize. The color bar on the left of the panels provides the color difference (in mag) compared to solar colors (range from −0.2 mag (black)to +0.2 mag (red)). North is up and east is to the left. Sun direction is opposite to the tail orientation in the southern coma hemisphere.