Three interpolated coma images produced from radical CN data taken on November 9, 07:22 UT. The plus sign indicates the location of the Hartley 2 nucleus, and the x- and y- axes are the right ascension and declination offset distances, respectively. The top image shows coma enhancement using division by azimuthal mean, and the middle image is coma enhancement by division of a radial profile. The bottom image was constructed by blending of azimuthal and radial division based on weighted means. Enhancement values greater than 1 indicate a higher-than-average concentration of the radical.