NGC 7635, the Bubble nebula

Constellation: Cassiopeia

NGC 7635, the Bubble nebula, is an emission nebula located in the constellation of Cassiopeia. It is created by the stellar wind from a massive hot young central star, approximately 1.6 million Ly from Earth. The image was taken with narrowband filter: Hydrogen-α, Oxygen III and Sulfure II.

Telescope & Mount:

AD300 12″ F/6.8 Dall Kirkham on a GM2000 mount

Imaging:

Camera: PlayerOne Poseidon-M (bin 2×2)

Data:
Ha: 117x300s
Oiii: 120x300s
Sii: 68x300s

Total integration time: 25h 25′