South Pole Star Trails . ... Showing all the trails as complete circles, such an image could be achieved only from two places on planet Earth . ... Directly overhead in the faint constellation Octans is the projection of Earth's rotational axis , the South Celestial Pole , at the center of all the star trail circles. Not so well placed as Polaris and the North Celestial Pole, the star leaving the small but still relatively bright circle around the South Celestial Pole is Beta Hydri . ...