Usually depicted carrying the detached head of the demon-woman Medusa, or Gorgon, who grew snakes for hair. Description Resembles a backward lambda. Perseus contains no first-magnitude star, but a pair of beautiful binocular star clusters, known as the Double Cluster. Look for the Perseid meteor shower on August 12. The size of each star indicates its relative magnitude .
Constellation names are light blue .
Messier object numbers are pink . Globular clusters are gold starbursts . Open clusters are dotted white circles. Planetary nebula are green diamonds . Bright nebula are magenta squares .