Color magnitude diagram of the galaxies currently observed within CALIFA, for the SDSS u − r observed colors versus the r-band absolute magnitude. For each galaxy we plot in color a map for the continuum intensity at  ~6550 Å down to a surface brightness of  ~23 mag/arcsec² AB ( > 3σ detection limit per spaxel), together with a contour plot of the Hα emission (if detected), derived by the fitting procedure described in the text (applied to the V500 data). The contours start at 0.3 × 10^-16 erg s^-1 cm^-2 arcsec^-2, and are spaced on a logarithmic scale, following the equation f = 0.3 + N^1.5 (0.3,1.3,3.1,5.5...). The NED name of the galaxies has been included, together with the orientation of the map on the sky. Note that some images have been shifted by up to  ± 0.5 mag around the nominal color–magnitude coordinate to avoid overlap. Nearby (projected) companions (e.g., NGC 7025) and foreground stars have not been masked (e.g., UGC 11694, UGC 11717).