Images of the outer bubbles in the SW from Oct. 11, 2014 taken with the N_Ha-filter. The region on the right of the dashed line is from the off-axis field observation OBS284_0038 while the narrow section on the left is from the image shown in Fig. 6, which covers the region marked with the dashed dotted line. No data were taken for the lower left corner region. The red giant is located at (xpix,ypix) = (0,0) and the pixel scale is 3.60 mas/pix.