NGC 6888: Crescent nebula

Imaged by Jean-Yves Beninger from Ollioules, France on 31 July 2023



NGC 6888, also known as the Crescent Nebula, is a about 25 light-years across blown by winds from its central, bright, massive star
The oxygen atoms produce the blue-green hue that seems to enshroud the detailed folds and filaments.
Visible within the nebula, NGC 6888's central star is classified as a Wolf-Rayet star (WR 136). The star is shedding its outer envelope in a strong stellar wind, ejecting the equivalent of the Sun's mass every 10,000 years.
The nebula's complex structures are likely the result of this strong wind interacting with material ejected in an earlier phase.
Burning fuel at a prodigious rate and near the end of its stellar life this star should ultimately go out with a bang in a spectacular supernova explosion. Found in the nebula rich constellation Cygnus, NGC 6888 is about 5,000 light-years away.  

Astro-Physics AP92, Field Flattener for 644mm focal length, f7

Rainbow Astro RST-135E mount

ZWO ASI2600MC camera with Duo band filter with bandwidth HA (15nm) and OIII (35nm)

Stack of 24 images of 5 minutes, bin 1x1