North America Nebula
The North America Nebula was the first image taken with the Nikon 70-200mm f/2.8G VR II (200mm@f/4.5). Unfortunately, the lens creates a lot of aberration at f/2.8 that also extends quite far into the center of the image. At f/4.5 there is still aberration in the corners, but after cropping its barley noticeable. The iOptron SkyGuider Pro performed quite good, with only minimal elongated stars.