Same contours of X‐ray surface brightness as in Fig. 4, but superposed on Hα image obtained with Fabry‐Perot interferometer by Amram et al. (1992). Registration was achieved as described in text, and X‐ray data have been binned into 1﹩\arcsec﹩ pixels and smoothed with σ = 2﹩\arcsec﹩ Gaussian.