IC5146 on May 29, 2004. A star-forming region of glowing hydrogen at an approximate distance of 3000 light years, surrounded by a sparse star cluster. The hydrogen is lit by the type B0 star of magnitude 9.6 in the center of the nebula.
This is an 80 minute exposure, consisting of four 20 minutes individual exposures, through a 656.3/4.5 nm H-alpha filter. The ST-7XE camera was cooled to -20C.
