description NGC 6804 Overview
NGC 6804 is a planetary nebula in the constellation Aquila. It has a ring-like bright inner shell and a much fainter, more extended outer halo, giving the object a layered appearance in deep images. William Herschel recorded the nebula in 1791. Like other planetary nebulae, it consists of gas expelled by a star during a late stage of stellar evolution, illuminated by the remaining hot central star.
help NGC 6804 FAQ
Where is NGC 6804 located?
NGC 6804 is a planetary nebula in the constellation Aquila. Its visible structure includes a bright inner shell and a much fainter outer halo.
Who recorded NGC 6804?
William Herschel recorded NGC 6804 in 1791. The object is catalogued as number 6804 in the New General Catalogue.
Why does NGC 6804 look layered in photographs?
Its bright ring-like inner shell is surrounded by a much larger and fainter outer halo. Long-exposure images can reveal the contrast between these different shells of gas.
Is NGC 6804 a galaxy or a planetary nebula?
NGC 6804 is a planetary nebula, not a galaxy. It formed from gas expelled by a dying star, which is later illuminated by the hot stellar remnant at its center.
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