The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb (the tail of the swan and its brightest star). The remarkable shape of the nebula resembles that of the continent of North America, complete with a prominent Gulf of Mexico. It is sometimes incorrectly called the “North American Nebula”.
The North America Nebula is large, covering an area of more than four times the size of the full moon; but its surface brightness is low, so normally it cannot be seen with the unaided eye. Binoculars and telescopes with large fields of view (approximately 3°) will show it as a foggy patch of light under sufficiently dark skies. However, using a UHC filter, which filters out some unwanted wave lengths of light, it can be seen without magnification under dark skies. Its prominent shape and especially its reddish color (from the hydrogen Hα emission line) show up only in photographs of the area.
Imaging telescopes or lenses: William Optics FLT98
Imaging cameras: Atik 383L+
Guiding telescopes or lenses: William Optics FLT98
Guiding cameras: Starlight Xpress Loadstar
Focal reducers: Riccardi Reducer 0,75x
Software: Fitswork 4.44, Adobe Photoshop CS3 CS3
Filters: Baader S2, Baader Planetarium Ha 7nm 2″
Accessories: Starlight Xpress 5×2″ Filter Wheel
Dates: June 9, 2014
Integration: 7.3 hours
Author: Alexander Sielski
AstroPhotography of the day by SPONLI 3 Aug 2014