M 27, also known as Dumbbell is a planetary nebula in the constellation Vulpecula at a distance of about 1227 light-years.
This bright object shining at mag 7.5 was the first planetary nebula to be discovered by Charles Messier in 1764.
The bright nebula spans 8 by 6 arc-min, a faint but complex halo extends to several arc-min in diameter both in H-alpha and O-III well visible in this deep image.
Image data: Ha-O3-RGB (240-240-100-100-100 min) total 13 h, north is up, seeing 0.7-1.1 arc-sec,
80cm f/7 Astrooptik Keller cassegrain, FLI PL-16803, Astrodon gen2 filters, Prompt 7 CTIO Chile
Processing: Johannes Schedler
Find here a view on the nebula in 25/70% size, a H-alpha to O-III comparison as gif animation below and a link to the 100% version here.