Postage stamp of a particular ALHAMBRA system composed of a principal source (red cross) and its three projected companions in the sky plane (orange letters) in the I band. North is up and east to the left. The axes show the right ascension (α) and declination (δ) offset with respect to the position of the principal source (α₁ = 188.7021, δ₁ = 61.9441). The red circle marks the angular separation in the sky plane for kpc at z_min = 0.4, θ_top = 13.32″.