Left panel: HST-NICMOS 2 image of the BR1202-0725 system, using the F160W filter, covering the SINFONI FoV of 8″ × 8″. White crosses indicate the positions of the SMG, quasar, Lyα1 and Lyα2 as labeled, according to Carilli et al. (2013). White squares show the regions where spectra were extracted from the SINFONI datacube. Right panel: HST-WFC3 image of J1000+0234, using the IR channel and F160W filter. White squares show the regions where SMG spectra were extracted from the SINFONI datacube, as identified. The white arrow points to a foreground object.