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Fig. 4


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 zmin = 0.4, θtop = 13.32″.

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