Density map in logarithmic scale showing the VVV bulge area. The map was made using all stellar point sources detected in the J, H, and K_s 1.1 CASU catalogues. Crowded areas appear in yellow, while less populated regions and high-extinction areas are shown in blue. The overlapping regions between the tiles are highlighted because the point sources are detected twice, which generates the grid pattern that also indicates the size of overlap regions. The density, in units of 10⁵ sources deg^-2, is indicated in the horizontal bar at the top.