Two-dimensional g − r color map of Malin 2 obtained from the TTT data. The color map is smoothed by a Gaussian with sigma of 1 pixel (0.194″) for a better visualization of the LSB features. The black solid lines show the wedge positions used for the photometry in Sect. 3.2. Six wedges, each with 30° opening angles are positioned at 0°, 60°, 120°, 180°, 240°, and 300°. A radial scale bar (in units of arcsec) is also shown along each wedge for easier comparison with the radial profiles from Sect. 3.2.