Shot of the Southern Sky during winter. The small streaks in the picture are satellites moving across the sky.
From Landscapes and Scenery
Star trails, looking straight up over about 2 hours the movement of the stars create an overhead circular pattern. The green bits in the sky are from some auroras that passed though the shot.
From Auroras and Night Scapes
Long exposure photograph looking up a communications tower. Notice how the center of the star field rotation is straight up.
From Bases Machines and People