M27 – A dying starThe Dumbbell Nebula (also known as Apple Core Nebula, Messier 27, M 27, or NGC-6853) is a planetary nebula in the constellation Vulpecula, at a distance of about 1,360 light years.
This object was the first planetary nebula to be discovered; by Charles Messier in 1764. At its brightness of visual magnitude 7.5 and its diameter of about 8 arc-minutes, it is easily visible in binoculars, and a popular observing target in amateur telescopes.
The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high-energy, ultraviolet light from the core ionizes the cloud.
Unmodified Canon 6D DSLR at the Prime Focus of my Home-Built 16 inch Diameter Newtonian Telescope.
ISO 3200, a single 90 second exposure, at my observatories in Yellow Springs, Ohio.