The constellation of Cassiopeia, with the W stars at bottom, framed to include most of the star clusters and nebulas in the constellation. At bottom left is the Heart Nebula, IC 1805, with the smaller round NGC 896 nebula attached. At top is the arc of NGC 7822 and below it brighter Cederblad 214. Below Ced214 is the small round Sharpless 2-170, with the trio forming what's become known as the Question Mark Nebula. At upper right is the Bubble Nebula, NGC 7635 and the faint Sharpless 2-157 and small intense NGC 7538. At bottom is the Pacman Nebula, NGC 281. Below centre near the star Gamma Cassiopeiae or Navi are the blue reflection nebulas IC 59 and IC 63, aka the Ghost of Cassiopeia, though diffuse emission nebulosity pervades the region. A subtle blue reflection nebula, van denBurgh 1, lies below Beta Cassiopeiae or Caph at right. At lower left along the left side of the W are NGC 663 (most prominent) and the smaller M103, NGC 654, and IC 166 clusters. At centre to the left of the Pacman Nebula is NGC 457, the Owl Cluster or ET Cluster. At far right is NGC 7789, aka Caroline's Rose, and at top right is Messier 52. The loose concentration of stars at upper left is Collinder 463.
