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One can imagine the northern sky as a giant seesaw with Polaris at the fulcrum and Cassiopeia and the Big Dipper sitting on seats at the opposite ends. Both of these circumpolar constellations are almost equidistant from the celestial North Pole, so while one is setting the other is rising. The five brightest stars of Cassiopeia form a "W" or "M", depending from what angle your are observing them.
The Greeks called these five stars Cassiopeia’s chair. The Arabs on the other hand, after determining the "M" position as the right side-up one, called Cassiopeia a kneeling camel, apparently of the two- humped variety. The constellation Cassiopeia has been called by various peoples, the Key, the Stone Lamp and the Foot. It has also been known as the prophetess Deborah, King David's Bathsheba and Mary Magdalene. The Celts, seeing the constellations Cassiopeia in the midst of the Milky Way, named it Llys Don, the House of Don, who was the Fairy King.
The Greek Cassiopeia was an Ethiopian queen known for her vanity. Her claiming to be more beautiful than the daughters of Neureuus, the sea god, started a chain of events involving her daughter Andromeda, her husband Cepheus and also Perseus.
That starred Ethiop queen who strove
To set her Beauty’s praise above
The sea-nymphs, and their power offended.
Cassiopeia eventually was placed in the sky as a punishment. As an additional punishment, she was forced to revolve around Polaris and periodically must stand on her head.
Cassiopeia is located in a rich area of the Milky Way and is very lovely to view through a pair of binoculars. If you wish to compare the colors of a white and a yellow star, look at alpha Cassiopiae and beta Cassiopiae. They are both of almost equal brightness, while alpha is yellow and beta is white.