NGC 6888

NGC 6888 is known as the Crescent Nebula located right in the heart of Cygnus. The nebula is a so called Wolf-Rayet nebula. WR stars are very hot and massive stars blowing off their outer shells. NGC 6888 is energized by WR 136, the bright star in the center of the nebula.

Make sure you also have a look at the straight H-alpha image.