Ronald Piacenti Junior
Padre Bernardo, Goias, Brazil
Celestron XLT C6 Schmidt Cassegrain, SkyWatcher HEQ5Pro Mount, ZWO ASI174MC camera.
The Ring Nebula (also catalogued as Messier 57, M57 or NGC 6720) is a planetary nebula in the northern constellation of Lyra. Such objects are formed when a shell of ionized gas is expelled into the surrounding interstellar medium by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf.