The california nebula, this picture was taken with the Nikon D7000, using the Nikon AF Nikkor 85mm f/1.8 riding on a Vixen Polarie travel astrophotography mount.
Taken with unmodified Nikon D7000 camera with Nikon AF f/1.8 85mm Lens. 11 x 120s at f/2.8 tracked by Polarie.