IC 1805 is an unusually shaped emission nebula in eastern Cassopia, situated about 5 degrees north of the "double Cluster" in Perseus. Its nickname, the "Heart Nebula", derives from its shape as it does look like a big red valentine in the sky. The open cluster at the centre of the heart is Mel 15, while the bright patch of nebulosity at the base of the heart (lower left) is IC 1795.