Similar to Fig. 1, but for GRB 050820A (z = 2.615). In contrast to GRB 050730, the field of GRB 050820A was observed in nine filters ranging from 473 nm to 5800 nm, in addition to extensive spectroscopy campaigns. This allowed us to construct the SED of several objects in the field of view. The width of the displayed field is 29″, twice the maximum impact parameter of 100 kpc of the strong Mg ii absorber at z = 0.6915, while the circle displays the maximum impact parameter of 100 kpc at the redshift of the intervening sub-DLA at z = 2.3598. Every object within 100 kpc is labelled if it is either detected in at least five filters or covered by a slit. Objects B7 and B10 appear to be not in the slit, due to the smaller PSF of the HST in comparison to the VLT.