Microlensing magnification patterns for a population of 0.2 M_⊙ bodies, assuming a point source. The frames consist of 1000² pixels and have a side length of 18 Einstein radii in the source plane. The parameter values are κ_* = 0.6, κ_c = 0, γ = 0.6 (top left), κ_* = 0.04, κ_c = 0, γ = 0 (top right), κ_* = 0.04, κ_c = 0.4, γ = 0 (bottom left) and κ_* = 0.04, κ_c = 0.4, γ = 0.4 (bottom right). Yellow lines indicate tracks across the amplification pattern for the length of the four light curves in Fig. 2, and a net transverse velocity of 600 km s⁻¹ is assumed. The position and orientation of the tracks is random.