M57: Ring Nebula


M57 – The Ring Nebula. 30sec x20 @ISO800. Optolong L-Pro. DSLR. sn-10 OTA. 

Getting better at using the dark light levels in GIMP.

The Ring Nebula (also catalogued as Messier 57M57 or NGC 6720) is a planetary nebula in the northern constellation of Lyra.[4] Such objects are formed when a shell of ionized gas is expelled into the surrounding interstellar medium by a star in the last stages of its evolution before becoming a white dwarf. (Wiki https://en.wikipedia.org/wiki/Ring_Nebula)

By Steve J Posted in Main

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