Fig. 1.
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Composite AGN spectrum of Glikman et al. (2006) shown at the quasar’s redshift of z = 0.0205. The five emission-line-free NB passes of the filters which mainly trace the AGN continuum variations (and are used for the photometric monitoring presented in this work) are shaded in different colors (blue for NB4250, green for NB5700, orange for NB6200, red for NB7320, and dark red for NB8025).
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