Triangulum is not one of the easiest seen constellations, but at least it does look like its name suggests it should. Adjoining Andromeda, some of its stars seen towards the top left of this image (Pisces lie to top right), Triangulum is home to the great galaxy M33. M33 is a companion to M31 in next door Andromeda and one of our Local Group. It is hard to see visually due to its size and low surface brightness.