The Plough. This asterism (group of stars) is part of the much larger constellation Ursa Major, most of which is out of frame. The asterism is familiar to amateur astronomers as it is bright and can be used to find other important stars in the sky. A line drawn through the two stars at right can be extended upwards to meet the pole star Polaris (not seen), while the handle of the Plough can be followed round to find the bright star Arcturus (not seen).