HST-ACS image (F814W filter, logarithmic scale, arbitrary unit) around the AGN-host galaxy CGr30-71. [O iii]λλ4959, 5007 and [O ii]λλ3727, 3729 surface brightness contours, smoothed using a 0.2′′ FWHM Gaussian, are displayed with red solid and blue dashed contours, respectively. The levels are identical for each doublet and correspond to 3.0, 7.6, 19.4, 49.5, and 125.9 × 10^-18 erg s^-1 cm^-2 arcsec^-2. [O iii] is clearly stronger than [O ii]. The inner outflow-like feature observed in the [O iii] flux map is highlighted by the thick red contour. The physical scale at the redshift of the structure is indicated at the bottom right.