North American Nebula, Narrowband

North American Nebula, Narrowband
The North American Nebula, also known as NGC7000 is an emission nebula in the constellation of Cygnus. It's named because it resembles a map of North America (the black area at bottom left of this image would be Hudson Bay). This is a fairly large structure - it covers an area of sky about 4 times the diameter of the full moon, but is invisible to the naked eye because it's very dim. Imaged here in narrowband, three separate images were made; each image was filtered to permit only very specific wavelengths of light to pass. Those wavelengths equate to Hydrogen α (green), Sulphur II (red) and Oxygen III (blue). The three images are then combined to form the colour image you see here.

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The North American Nebula, also known as NGC7000 is an emission nebula in the constellation of Cygnus. It's named because it resembles a map of North America (the black area at bottom left of this image would be Hudson Bay). This is a fairly large structure - it covers an area of sky about 4 times the diameter of the full moon, but is invisible to the naked eye because it's very dim. Imaged here in narrowband, three separate images were made; each image was filtered to permit only very specific wavelengths of light to pass. Those wavelengths equate to Hydrogen α (green), Sulphur II (red) and Oxygen III (blue). The three images are then combined to form the colour image you see here.

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I run trips within Ireland and abroad. Past destinations include Iceland, Greenland, Svalbard and the Faroe Islands.