A collection of bright star clusters and colourful nebulas on the border of Cassiopeia and Cepheus. The prominent star cluster at left is Messier 52. The emission nebula to the lower right of it is NGC 7635, the Bubble Nebula; above and to the right of it is the small but intense nebula NGC 7538. At upper right of the frame is Sharpless 2-155, the Cave Nebula. The diffuse nebula at bottom is Sharpless 2-157, the Lobster Claw Nebula, with the small star cluster NGC 7510 near the end of one of its claws. The small star cluster at lower right made yellow by interstellar dust absorption is NGC 7419. Photographed from Alberta, Canada, November 25 2019.