In the framework of a long-term program aimed at studying stellar populations in the Carina dSph galaxy, we present the photometric calibration of the two mosaic cameras adopted in this experiment, the MOSAICII CCD camera available at the 4-m CTIO Blanco telescope, and the WFI available at the 2.2-m ESO/MPI telescope. We discuss the data reduction

An accurate and traceable photometric calibration is becoming increasingly important for large telescopes if they are to reach their full potential. The scientific community of the Gran Telescopio Canarias (GTC) has recognized this and there are programmes underway to ensure that suitable calibration standards are in place. The aim is to extend the

Low-luminosity AGNs (LLAGNs), which make up the vast majority of the AGN population, may yield important clues into the origin and evolution of nuclear activity, constituting a perfect laboratory to investigate the connection between galaxies in which the central black holes are active and those in which they are quiescent. The precence of a

The AGN magnitude and surface brightness reported in Table 1, columns (2) and (3), were offset by band-dependent constants. The corrected values are given in the new version of Table 1 presented herein. The same photometric offsets were also used in Figure 2, which has incorrect values on the y-axis. The corrected Figure 2 is also shown herein. The

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The high-velocity black hole in the low mass X-ray binary XTE J1118+480 could be the remnant of an massive star formed in the early stages of the evolution of the Galaxy (Mirabel et al. 2001). Alternatively, it could have been ejected from the Galactic plane as a result of a `kick' received during a supernova explosion (Gualandris et al. 2005). The