Stacked LF 500, DF 50 in DSS, enhanced in GIMP. Post processing is a time consuming activity and that is the reason I do image acquiring when there is no Moon and clouds.

Messier 17 is a large, bright emission nebula and dark nebulae complex in Sagittarius.
M17 has a number of popular names, including the Omega Nebula, Swan Nebula, Checkmark Nebula, Lobster Nebula, and Horseshoe Nebula.