Scans of the comet 152P colour, , and along the solar anti-solar direction. Positive distance is in the anti-solar direction, and negative distance is in the solar direction. Zero is at the photometric centre of the comet. The upper contour plot shows the intensity of the comet in the photometric images and the lower contour plot shows the photometric intensity of the comet in the polarimetric images; the levels are arbitrary. The small grey shaded area in each contour plot shows the area scanned.