Comparison between soft X-ray emission (0.5–2 keV) and narrow line region (mapped usually by [O III] or Hα+[N II]). We reproduced and superposed optical line contours from published images on the Chandra images. 3C 63, 3C 403, 3C 433: Hα+[N II] contours from Baum et al. (1988). 3C 98: Superposed [O III] contours are from Hansen et al. (1987). 3C 445: the Chandra image is off-axis causing a PSF elongation along the north-west axis. Instead the extension of about 10 arcsec along PA  ~ 135° is real and also visible in the V band ground based observation published in Heckman et al. (1986) (contour superposed).