A safari in Tanzania takes one just south of the Earth’s equator. Here there is no visible North Star; it resides just below the horizon, obscured by the acacia trees and grasses of the Serengeti plain. A startrail image reveals its implicit location; the arcs to the north are perfect semicircles.
A safari in Tanzania takes one almost exactly to the Earth’s equator. A camera pointed east to make a startrail image will show those due-east stars taking paths perfectly perpendicular to the horizon. Stars to the north and south bend toward their respective centers of apparent motion.