Milky Way - from Cassiopeia to Ophiuchus

I took this wide-angle shot of the milky way with my Nikon D7000 and the Vixen Polarie tracker. It spans almost 90 degrees - from Cassiopeia (left) to Ophiuchus (right). You can see the Summer Triangle with Vega (middle of the image above the Milky Way), Altair (in the right of the image below the Milky Way) and Deneb (in the left of the image inside the Milky Way).

I had to crop this image as the lens (Tokina f11-16) shows severe coma in the corners. The image consists of 11 x 5 min exposures.