Wavelength coverage of the ALHAMBRA filter set for the LAICA camera CCD1 (thin continuous lines). The position of the most prominent QSO and BLAGN emission lines, plus the Lyman limit, are shown evolving with redshift as thick lines. All filters have been normalized to unity (see Aparicio-Villegas et al. 2010, for their true efficiency). Dotted lines trace each filter central wavelength (Table 2).