Intro and Visual description
Find the bowl of the big dipper and locate the two stars nearest the handle. A line running through these stars, tracing away from it above the open bowl. This line runs to Deneb, the tail of the constellation Cygnus the Swan. With wings abreast, and long neck outstretched, Cygnus flies along the milky river.
Cygnus is included in the ancient star catalogs of Eudoxos of Knidos, Aratos of Soli, and Ptolemy.