Color composite image (g and r bands) of the VST mosaic’s portion used in this paper (56.7 × 46.6 arcmin²). The two cD galaxies NGC 3311 and NGC 3309, which lie in the cluster center, are labeled in the figure. Close to them, to the left is marked NGC 3312, a large spiral galaxy. Residual light from the two subtracted stars is still visible. North is up, and east is on the left. The color RGB image is created using the Lupton et al. (2004) scheme, using the r-band image as R filter input, the g-band as B filter input, and the average image between r and g bands as G filter input.