NGC 7000 Detail in Hubble

NGC 7000
Please click on the image for a bigger view.
Object: NGC 7000
Date of exposures: 06.08.2017
Distance: ca. 3.000 Lightyears
Exposures: Ha: 9 x 900 Sek., [O III]: 4 x 900 Sek., [S II]: 3 x 900 Sek., Sum 4,0 Std.
Telescope: 10'', F4 Newton
Focal length: 1000 mm
Filter: Astrodon H-Alpha 5nm, [O III] 3nm, [S II] 3nm
Camera: Atik 460Exm
Guiding: Off Axis Guider, Lodestar
Mount: EQ8

The North America nebula (NGC 7000) is the name of a diffuse gas cloud in the constellation Swan. The nebula got its name because of its shape, which is reminiscent of a map of the North American continent. The gas cloud is located between 2,000 and 3,000 light years and consists predominantly of hydrogen, which occurs partially in ionized form (HII) and emits visible light in the form of deep red radiation. The nebula appears intensely reddish in long-exposed photographs. The North American was discovered in 1891 by Max Wolf. The discovery was one of the first with the help of astrophotography.

This false color image was captured in the gas spectrum of the ionized hydrogen (H-alpha), oxygen ([O III]) and sulfur ([S II]). An RGB image was created from the three channels. The red channel was assigned equally [S II], the green channel H-alpha and the blue channel [OIII]. In sum, this results in a very interesting color play, which reflects the structures very contrastively.


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