Andromeda
Andromeda is a Northern Hemisphere constellation otherwise known as the Chained Maiden. It is one of the 48 Greek constellations originally described by the 2nd century astronomer Claudius Ptolemy (Wikipedia). Andromeda remains one of the 88 modern constellations defined by the International Astronomical Union (Wikipedia).
Andromeda (abbrev. = And; genitive = Andromedae) covers 722 square degrees or 1.75% of the celestial sphere making it the 19th largest constellation. It contains 152 stars brighter than apparent magnitude 6.5, the brightest star being Alpheratz. See Andromeda for a photo this constellation from Bifrost Observatory.
For more information see the entries for Andromeda at Wikipedia and U. Wisconsin. For a chart of Andromeda, see And (IAU).