The Lagoon Nebula (catalogued as Messier 8 or M8, and as NGC 6523 is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and as an H II region.
The Lagoon Nebula was discovered by Giovanni Hodierna before 1654 and is one of only two star-forming nebulae faintly visible to the naked eye from mid-northern latitudes. Seen with binoculars, it appears as a distinct oval cloudlike patch with a definite core. In the foreground is the open cluster NGC 6530.
This image uses the Hubble palette to map the colors of the different gases into very distinct shades. This is a 12 hour exposure, with more exposures to come. The object is so large I’ll move the camera slightly to take even more in of this dramatic object. Images were taken June 16-July 11, 2015 in very hot Arizona weather but clear skies in between the summer monsoons. You can see a wider, visible light photo of Messier 8 at this link.