Polarized intensity contour map at 8.46 GHz with apparent polarization B-vectors, superimposed on the Hα image (from Tüllmann et al. 2000). Contours are plotted at levels (3, 5, 8, 12, and 20)  ×  9 μJy/b.a. (rms). Vectors are proportional to the degree of polarization (10″ corresponds to 10%) and show the apparent B-orientation. Only vectors above 3σ rms level (in both total and polarized emission) are shown. The resolution is 16″ HPBW.