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NGC 6822 galaxy and NGC 6818 planetary nebula
NGC 6822 galaxy and NGC 6818 planetary nebula
Credit: Giuseppe Donatiello
NGC 6822 among the galactic cirrus clouds in the central bulge region. It is a purely prospective alignment since the small and isolated irregular galaxy, one of the most massive of the Local Group, is about 500 kpc (1.6 Mly) away [Cannon et al. 2006].
Having been discovered by Edward Emerson Barnard with a 6-inch telescope, it is also called Barnard's Galaxy.
The pinpoint object with a beautiful turquoise color (upper right) is the planetary nebula NGC 6818. The color is mainly due to the emission of the "forbidden" lines of doubly ionized oxygen [OIII].
NGC 6822 galaxy and NGC 6818 planetary nebula
NGC 6822 galaxy and NGC 6818 planetary nebula
Credit: Giuseppe Donatiello
NGC 6822 among the galactic cirrus clouds in the central bulge region. It is a purely prospective alignment since the small and isolated irregular galaxy, one of the most massive of the Local Group, is about 500 kpc (1.6 Mly) away [Cannon et al. 2006].
Having been discovered by Edward Emerson Barnard with a 6-inch telescope, it is also called Barnard's Galaxy.
The pinpoint object with a beautiful turquoise color (upper right) is the planetary nebula NGC 6818. The color is mainly due to the emission of the "forbidden" lines of doubly ionized oxygen [OIII].