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| NGC7000 North American Nebula Caldwell 20
and IC 5067 Pelican Nebula Emission Nebula distance: 2,200 ly image size: 200'x200' FLI PL-16803 camera FSQ-106EDX III scope @ 530mm (f/5) AP900 mount 24.2 hour total exposure HaLRGB 560:190:220:240:240 subs 10:10:10:10:10 binned 1:1:2:2:2 (3.49" per pixel unbinned) Guiding with ST-402XME camera on 2.8" Pronto scope @ 475mm (f/6.8) The North American Nebula, on the left, is large, covering an area of more than 4 times the size of the full moon. Its surface brightness is too low to be seen with the unaided eye. It and the nearby Pelican Nebula, on the right, are part of the same interstellar cloud of hot ionized hydrogen. There is a complex band of interstellar dust between the Earth and the nebula that hides part of it giving the shape we see. We believe that Deneb (outside of this image) is the star heating the gas cloud and thus causing it to glow. It's easy to understand how the North American Nebula got its name. The logic behind the Pelican Nebula's name eludes me. |
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