Example of angular power spectra of AGNs (left panels) and clusters (right panels). In the top panels, the auto-spectrum of the first redshift bin is shown in blue (bin 0.9 <  z <  0.99 for AGNs and 0.40 <  z <  0.41 for clusters), and the cross-spectra of the first redshift bin with the second bin (0.99 <  z <  1.09 for AGNs and 0.41 <  z <  0.43 for clusters) in red. Horizontal lines show the level of Poisson noise for auto-spectra. In the bottom panels, the derivatives of those power spectra (solid and dashed lines, respectively) are shown with respect to parameters in the plot’s legend. Parameters of photometric redshift errors are σ₀ = 0.05 and 0.01, f_fail = 0.05 and 0.02 for AGNs and clusters, respectively.