Bubble Nebula - NGC 7635

The Bubble Nebula is a beautiful target 7 light-years across, 7,100 light-years from Earth in the constellation Cassiopeia.

The star forming this nebula is 45 times more massive than our sun. Gas on the star gets so hot that it escapes away into space as a "stellar wind" moving at over 4 million miles per hour. This outflow sweeps up the cold, interstellar gas in front of it, forming the outer edge of the bubble. As the surface of the bubble's shell expands outward, it slams into dense regions of cold gas on one side of the bubble. This asymmetry makes the star appear dramatically off-center from the bubble.

On the night of Sept 4th, 5th, 2026 I captured over 800, 30 second subs but had to reject about 40%.  The nebula is very small in the field of view and a difficult target in my opinion. It is best captured using a 2000 mm Schmidt-Cassegrain or a long refractor that I do not posses.  This was captured using the SeeStar S50.  I also captured 80 plus 2 minute subs using my Askar 71F that I will process later. This is also best captured using narrow band filters and a mono camera. All for the future.