Nerpio Sky Gems Observatory, Spain

Total Exposure Time: 24:40 hours Bin1:Ha 96 x 10 min.;Bin1:RGB 19,18,15x10 min.each
This image is 1900x1430 pixels

14.5 Alluna Mirror Newtonian
SBIG STF8300M, ASA 85 LX mount, unguided w/MaximDL
RA 23h 20m 44s, Dec +61° 11' 57"
Pos Angle +181° 13', FL 1343.9 mm, 0.83"/Pixel

Processed with PixInSight using IP4AP methodologies (www.ip4ap.com)

Blown by the wind from a massive star, this interstellar apparition has a surprisingly familiar shape.
Cataloged as NGC 7635, it is also known simply as The Bubble Nebula. Although it looks delicate, the 10 light-year diameter bubble offers evidence of violent processes at work.
To the right of the Bubble's center is a hot, O star, several hundred thousand times more luminous and around 45 times more massive than the Sun.
A fierce stellar wind and intense radiation from that star has blasted out the structure of glowing gas against denser material in a surrounding molecular cloud.
The intriguing Bubble Nebula and associated cloud complex lie a mere 11,000 light-years away toward the boastful constellation Cassiopeia. This tantalizing view of the
cosmic bubble is composed from H-alpha narrowband image data, recording emission from the region's ionized hydrogen atoms.
(ref. http://apod.nasa.gov/apod/ap141002.html)