Shows: Nebula Swan nebula Checkmark nebula Omega nebula Lobster nebula Horseshoe nebula Messier 17 M17 Ngc 6618 Sagittarius
This feature is known as the Swan Nebula, also called the Checkmark Nebula, Omega Nebula, Lobster Nebula, and the Horseshoe Nebula. It’s catalogued as Messier 17 or M17 or NGC 6618. It’s in the constellation Sagittarius.