Photographing the Lobster Claw Nebula
The Lobster Claw Nebula (Sharpless 157) is a bright emission nebula. It lies near the edge of the northern constellation Cassiopeia, bordering on Cepheus. As you’ll soon see in my long-exposure image, this bright HII region is surrounded by many more interesting deep-sky objects. It sits very close in the sky to another popular emission…