The Bubble Nebula - NGC 7635
The Bubble Nebula, seen in the center of the frame, is believed to be a rapidly expanding shell of ionized gas that is created by the stellar wind of a massive star.
September 29, 2016
1.5 hours unfiltered.
San Diego Astronomy Association site at Tierra Del Sol, San Diego County, CA
RC Optical Systems 10 inch f/9 using a SBIG STT8300M camera.