The North America Nebula is a very large target, and a very bright target. If you are trying narrowband astrophotography in the summer months, this is one of the best targets to point your camera. It has lots of gas mixed with dust and many, many stars from sitting along the Milky Way's galactic equator. Black blotches are basically dust made of carbon and silicon based particles among others. The glowing parts are hydrogen, sulfur, and oxygen gasses.
Here is the full frame. You can see how it looks like the continent of North America laying on its side.
Captured with a Takahashi FSQ106N and a Central DS 5DMkIV. An OPT Radian Triad Ultra filter was used. 12 x 10minute exposures.
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