The celestial swan is sometimes called the northern cross since its + shape is very striking. Its brightest star Deneb at magnitude 1.3 and is one of the members of the summer triangle. Although the faintest of the triangle it is actually is the brightest only appearing fainter because it is the most distant. In mythology Cygnus represents a swan flying down the milky way, swans feature in many legends including that of Zeus who visited Leda wife of King Tyndareus of Sparta in the guise of a swan. The result of their union was Pollux one of the heavenly twins. The Arabs saw Cygnus as a hen