The North American Nebula, NGC 7000, is one of my favorite Summer astrophotography targets. I photographed it last night with the 130mm F/4.5 astrograph. The image below is a composite of 20, 6-minute exposures at ISO1600. I used a narrow-band filter that only permits four specific wavelengths of light to reach the camera’s sensor.
Can you see the Gulf of Mexico? How about Baja? That bright part that could be Mexico and Central America is sometimes called The Great Wall. It hasn’t anything to do with our previous psychopath President’s wall.
This particular image is a medium-resolution version of the original which has too many megabytes of data. The blogging software doesn’t like really big images.
