Stirling Astronomical Society Gallery

Sadr region and the Butterfly Nebula (IC 1318). Sadr (right of centre) is the central star in Cygnus and is surrounded by a large area of hydrogen emission, part of the Cygnus molecular complex. The Butterfly Nebula (left) is just a part of this vast emission region within the Summer Triangle. Imaged in monochrome with a H-α narrowband filter.