NGC 6888 - Crescent Nebula
The Crescent Nebula is an emission nebula created by the stellar wind from a Wolf-Rayet star colliding with slower moving wind from an earlier phase.
Distance: 5,000 light-years
Apparent Magnitude: 7.40
Apparent Size: 18' × 12'
Constellation: Cygnus
Object Type: Emission Nebula (Wolf-Rayet bubble)
Key Features:
- Wolf-Rayet star (WR 136) at center
- Shock-heated shell structure
- Strong OIII emission
- Stellar wind collision
- Expanding at 2,000 km/s
Best Imaging Season: June - October
Optimal Integration: 12+ hours (OIII)
