I shortly checked and the LogNorm looks a bit strange compared to the other images. But I think the rings can be nicely seen in the actual [AiryDisk2DKernel Documentation](http://adonathastropy.readthedocs.org/en/latest/_generated/astropy.nddata.convolution.kernels.AiryDisk2DKernel.html#astropy.nddata.convolution.kernels.AiryDisk2DKernel).