The Dragon Egg Nebula 馃惒馃 馃寣

NGC 6164 has an appearance similar to what you would see in a planetary nebula. It has a gaseous shroud that surrounds the central star. These typically have shockwaves, and often highlight where they brighten showing where they are interacting with the interstellar medium. The outer halo is very dim and certainly proved to be a challenge to reveal it with all the tiny filaments with blue and teal highlights and a bit of red where Ha is present. NGC 6164 is 4,200 light-years away in the constellation of Ara. It is about 21 X 13 arcmins, at magnitude 11. It contains a very bright O-type star about 40 times as massive as our sun. 鈽锔忊湪 The nebula in the centre spans around 4 light years and has an interesting bipolar symmetry. And this is all framed nicely in the larger outer-shell, all set within a beautiful starfield. 馃敪 Image credit to Terry Robison

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