Carina dSph. Comparison between the different fields of our data set. The black dots represent stars in the de Boer et al. (2014) photometric catalogue inside one tidal radius. The blue rectangle is the field of the Bono et al. (2010) catalogue. The red stars mark the position of RR Lyrae stars, while the blue squares are the stars with spectroscopic measurements (Helmi et al. 2006). The zero point of the horizontal and vertical axes is set to RA = 6h 41m 36.6s and Dec =−50°57′58′′ (J2000).