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The Dumbbell Nebula (M27 / NGC 6853)
Recaptured M27 this month. processed entirely in PixInsight for the first time...
Captured with a Sony a6000 on a 6" GSO RCT
used ~40 sub frames captured over 2 nights at 5 min exposure time each at ISO 800.
The 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.
Like many nearby planetary nebulae, the Dumbbell contains knots. Its central region is marked by a pattern of dark and bright cusped knots and their associated dark tails (see picture). The knots vary in appearance from symmetric objects with tails to rather irregular tail-less objects. Similarly to the Helix Nebula and the Eskimo Nebula, the heads of the knots have bright cusps which are local photoionization fronts.
The central star, a white dwarf, is estimated to have a radius which is 0.055±0.02 R☉ (0.13 light seconds) which gives it a size larger than most other known white dwarfs.
en.wikipedia.org/wiki/Dumbbell_Nebula
The Dumbbell Nebula (M27 / NGC 6853)
Recaptured M27 this month. processed entirely in PixInsight for the first time...
Captured with a Sony a6000 on a 6" GSO RCT
used ~40 sub frames captured over 2 nights at 5 min exposure time each at ISO 800.
The 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.
Like many nearby planetary nebulae, the Dumbbell contains knots. Its central region is marked by a pattern of dark and bright cusped knots and their associated dark tails (see picture). The knots vary in appearance from symmetric objects with tails to rather irregular tail-less objects. Similarly to the Helix Nebula and the Eskimo Nebula, the heads of the knots have bright cusps which are local photoionization fronts.
The central star, a white dwarf, is estimated to have a radius which is 0.055±0.02 R☉ (0.13 light seconds) which gives it a size larger than most other known white dwarfs.
en.wikipedia.org/wiki/Dumbbell_Nebula