A framing of most of the constellation of Perseus, with the core region, the group of stars called the Perseus OB Association surrounding Alpha Persei, or Mirphak, at left and above centre. The large group is also called Melotte 20 or the Perseus Moving Cluster. The field frames a number of other bright star clusters: NGC 1245 just right of bright Mirphak. Messier 34 at upper right. NGC 1342 at lower right. NGC 1528 at the left edge, with smaller NGC 1545 below it. Above NGC 1528 is the small (on this scale) red nebula NGC 1491, aka the Fossil Footprint Nebula. The famous variable star Algol is at right, looking blue here, accompanied by the red star Gorgonea Tertia. The main star clusters in Perseus, the Double Cluster, are off frame at top in this framing. Dust along the Miky Way tints the sky subtle tones of yellow contrasting with the bluer dust-free area of sky.
