The Crescent Nebula is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by William Herschel in 1792. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.
🔭 EXPOSURE DETAILS
🔭 Telescope: ZWO Seestar S50
🌈 Filters: ZWO Light Pollution filter
🌌 Bortle Scale: 4
⏱️ INTEGRATION TIME
🟥 20 sec subs - osc rgb - 769 * 20s - 4h 16m
🟥 10 sec subs - osc rgb - 846 * 10s - 2h 21m
Total Integration: 6h 37m
💻 SOFTWARE
⚙️ Editing: GIMP
✨ Processing: Siril
💿 Scripts: Naztronomy / RC-astro
#astrophotography #deepsky #darksky #seestar_s50 #cloughjordan
