Line-strength maps for NGC 3923 over Mg b, Hγ_A, and Fe5270. In the three plots to the left, the cubes are not corrected and in the three plots to the right the cubes are corrected for the fringe-like patterns. The spectra used for the line-strength analysis are binned, using Voronoi binning (Cappellari & Copin 2003), in order to have at least a S/N of 60. The velocities and velocity dispersions are calculated using pPFX (Cappellari & Emsellem 2004) and are used in the line-strength measurements. The line strengths are measured using the same principle as in Kuntschner et al. (2006).