Sharpless 140

This object lays in the region of the Cepheus Bubble and is an HII emission nebula at the position of Ra 22h 19m / Dec +63° 18′ 
This image is a stack of 22 frames of 900 sec using a Baader H-alpha 7nm filter

Camera: Atik 460ex mono
Telescope: Canon EF 200mm F2.8L II USM @ F2.8