The Trifid Nebula


Rafael Compassi

Presidente Lucena

SW 8″ F/5
L 57×150″
RGB 10×150″
Ha 10×300″

The Trifid Nebula is an H II region located in Sagittarius. It was discovered by Charles Messier on June 5, 1764. Its name means ‘divided into three lobes’. The object is an unusual combination of an open cluster of stars; an emission nebula, a reflection nebula and a dark nebula (the apparent ‘gaps’ within the emission nebula that cause the trifurcated appearance; these are also designated Barnard 85).