The Crescent and the Soap Bubble HOO

Here is the famous summer target made up of the pair formed by the Crescent and the Soap Bubble nebulae, located 5000 light-years away in Cygnus.
Both were formed at a final phase in the life of a star but they are very different. Also known as NGC 6888, the Crescent was shaped as its central massive Wolf-Rayet star (WR 136) shed its outer envelope in a strong stellar wind, being near the end of a short life that should finish in a spectacular supernova explosion. The Soap Bubble Nebula is likely a planetary nebula, the final shroud of a lower mass, long-lived, sun-like star destined to become a slowly cooling white dwarf.

I chose and like very much the HOO rendition on that famous pair.
The Oiii exposures were captured without any Moon, in order to get the maximum of the weakest extensions of the Crescent, and the Halpha exposures with a little presence of the Moon, all from my backyard in Bortle 6 all along those short nights of the July month.

Telescope TOA130 – FL645
Mount EQ6-r
Camera ZWO 2600mm & Antlia 3.5nm Ha & Oiii filters
HOO processing with Pixinsight and Photoshop

Ha : 113 x 300s
Oiii : 153 x 300s

full resolution at :

Autore: Mathieu GUINOT (sito)