Opacities κ_j of the normal polarization modes j = 1,2 (the lower and upper curve of each type, respectively) in a magnetized plasma at ρ = 0.1 g cm^-3 and T = 10^5.5 K, for B = 10¹¹ G and θ_B = 10° (left panel), B = 10¹¹ G and θ_B = 60° (middle panel), and B = 10¹² G and θ_B = 60° (right panel). Accurate opacities (solid lines) are compared with the approximation of the cold, fully ionized plasma (dashed lines). The arrows correspond to different characteristic transition energies and are marked in the same way as in Fig. 4.