PACS images of IRC +10216 at 70 μm (upper), 100 μm (middle), and 160 μm (bottom) after subtraction of the smooth halo of the circumstellar envelope. Left-hand column shows the data without deconvolution, right-hand column when deconvolution is applied before the subtraction of the smooth envelope structure. The field-of-view (FOV) for the left-hand column is 16′ × 11′, while for the deconvolved images the FOV is 10′ × 10′. North is at the top, east is to the left. The pixel size is 1′′ for the 70 and 100 μm images and is 2′′ for the 160 μm image. The six radial spikes are due to the support spider structure of the secondary mirror; these regions are not taken into account in our deeper analysis (see also Fig. 4). The diagonal striping in the 100 μm image is instrumental. The innermost arc is found at 24′′, the outermost one at 320′′. The bowshock detected at 480′′ to the east by Ladjal et al. (2010) can be seen in the left-hand image at 160 μm.
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