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The Crescent Nebula (NGC 6888)

The Crescent Nebula (NGC 6888) is an interesting emission nebula in the constellation Cygnus. This nebula’s shape is actually created as a result of the star at the center expelling the gas shell of its solar atmosphere and that shell interacting with the hydrogen gas surrounding it. The star at the center is a Wolf-Rayet star called WR 136. These types of stars live fast and die young.

 

To learn more about the Crescent Nebula check out: https://en.wikipedia.org/wiki/Crescent_Nebula and https://en.wikipedia.org/wiki/WR_136

 

This image is by far the most data I’ve collected to date topping off at 20.6 hrs (7.4 Ha, 8.6 Oiii, and 4.6 Sii) all done in narrow band. I’ve also included a few alternate color mappings such as a HOO version below.

Technical

Explore Scientific 127 FCD100 APO telescope
MoonLite focuser
SkyWatcher EQ6-R Pro mount
ZWO ASI1600 MM Pro camera
Chroma Ha, Oiii, and Sii filters