Bubble Nebula (NGC 7635)

NGC 7635, also called the Bubble Nebula, is a emission nebula in the constellation Cassiopeia. The "bubble" is created by the stellar wind from a massive hot young central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel. (dixit Wikipedia)

To take this photo i used the following setup:
Scope: TS Optics ts 80/352 astroimaging
Mount: AZEQ6
Camera: Atik One 6.0

The total exposure is around 2.5 hours in october 2016. As my camera is black & white i use RGB filters to build the chrominance layer, and stack several photo on each filter to maximize signal over noise.

14 photos of 5 min flitering Luminance except UV
5 photos of 5 min filtering Red
5 photos of 5 min filtering Blue
5 photos of 5 min filtering Green

I used the software Prism 10 to manage the capture, the pre-treatment (Removing offset, dark and flat). The stacking and the post-treatment was done with Pixinsight and at the end Photoshop.

Technical detail of the photo here: https://www.astrobin.com/270335/

If you want more information, ask me in comment !

I hope you enjoyed it! If it is the case, resteem and follow me to see more astrophotography.