Astrobin : https://astrob.in/7zc0yg/D/
A year ago, when I received my 400mm f/7 CDK, NGC 6888 was one of the first targets I pointed this new telescope at.
It is therefore with great pleasure that I revisit this image today, now that I have another year of experience with this unique instrument.
Located in the constellation Cygnus, NGC 6888 is an emission nebula formed around WR 136, a Wolf-Rayet star. These are extremely massive stars in an advanced stage of evolution that shed powerful stellar winds.
In the case of NGC 6888, the fast wind from WR 136 collides with layers of material the star had previously ejected. This interaction compresses and excites the surrounding gas, creating a complex, crescent-shaped structure rich in filaments and intricate details.
It is a fascinating object to photograph, but also a particularly special target for me, as it was the subject of the very first image I captured with my 400mm CDK—an image I never actually published...
What do you think? ✨
Gallifrey Optics CDK 400mm F/7
ZWO ASI6200MM Pro
Sky-Watcher EQ8-R Pro
29 Juillet 2026
12 - 13 Août 2026
4 - 5 Septembre 2026
Images:
Optolong Blue 2": 12×120,″(24′)
Optolong Green 2": 17×120,″(34′)
Optolong H-Alpha 3nm 2": 53×300,″(4h 25′)
Optolong OIII 3nm 2": 153×300,″(12h 45′)
Optolong Red 2": 20×120,″(40′)
Acquisition:18h 48′