This was imaged on the 3rd June 2016.

It is Messier 17.

From Wikipedia:

The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, and the Horseshoe Nebula(catalogued as Messier 17 or M17) is an H II region in the constellation Sagittarius. It was discovered by Philippe Loys de Chéseaux in 1745. Charles Messier catalogued it in 1764. It is located in the rich starfields of the Sagittarius area of the Milky Way. 

M17.
93 light frames at 30 seconds exposure each.
40 Dark frames.
40 Flat frames.
40 Bias frames.
ISO 800
Skywatcher 102 ALT/AZ Synscan goto.
Canon 1200D.

All stacked in DSS and post processed in Star tools.