Bubble and Claw

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NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a HII region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52.
The bubble is created by the stellar wind from a massive hot star, SAO 20575, laying in a giant molecular cloud excited by the hot central star, causing it to glow.
In bottom left corner of the image there is Sh2-157 , also known as the Lobster Claw, which is part of the same hydrogen cloud. [Wiki]

RHa - G synt- B processing.

Optic SW ED80 + 0,85 Reducer/Flattener
Camera Atik 383L+
Filters Baader L, R, G, B, Ha 36mm
Mount NEQ6 with EQASCOM
SW 70/500 with AlCCD5
Frame center
RA 23:18:05 DEC 63:35:03
10th September 2016
Pian dell Armà, Italian Alps
Exposures Ha - 12x900s bin 1x1 @-10°C
R - 6x600s bin 2x2
B - 6x600s bin 2x2

Integration time - 5h