Left: ISAAC K-band broadband image of NVSS J210626-314003 smoothed to the same spatial resolution as the SINFONI imaging spectroscopy, 1′′. Right: Hα morphology of NVSS J210626-314003. The color bar shows the contamination to the flux density measured in the broadband filter from Hα line emission in units of 10^-19 erg s^-1 cm^-2 Å^-1 arcsec^-1. Contours show the broadband K-band morphology and are the same as in the left panel. The contour levels correspond to 3, 5, 7, 15, and 30× the root-mean square of the broadband image smoothed to the SINFONI resolution of 1′′, which has rms = 3 × 10^-20 erg s^-1 cm^-2 Å^-1 arcsec^-1. The circles in the lower left of each panel show the size of the seeing disk.