M 17 is a hydrogen II region in the constellation Sagittarius. It is variously referred to as the Omega or Swan Nebula. It spans 22 light years and is one of the largest star forming areas of our galaxy. The object is a very popular subject in astrophotography.
This wide field image in natural color shows the entire area.
Imaged in LRGB on our Planewave DR 350 at Observatorio El Sauce, Chile
Image Processing: Mike Selby