Upper line: minimal standard deviation (Cramér-Rao lower bounds) δ  =  {δ_α, δ_x0, δ_y0} on the estimated parameters Ω  =  {α, x₀, y₀} (δ_x0 and δ_y0 are normalized by the inverse of the flux α of the exoplanet and expressed in pixels unit). Middle line: magnification of the area near the host star. Lower line: coefficients of correlation ρ  =  {ρ_αx0, ρ_αy0, ρ_x0y0} between the estimated parameters Ω  =  {α, x₀, y₀}. The computation is performed on the HIP 72192 dataset at λ₁  =  2.110 μm. The positions of the two real faint point sources in the dataset (which are not visible on these maps because it does not act of detection maps) are represented by a circle.