M57 – The Ring Nebula

Found in the constellation of Lyra – The Harp, is the planetary nebula, M57. Although called a planetary nebula, it is not caused by a planet, but a star. This particular one was caused by a red giant star which released a shell of ionized gas expanding into the interstellar medium. The Ring Nebula has a magnitude of 8.8 and an angular size of 1.5z1 arcminute, too small to see with binoculars, but visible with a small telescope of 4 inches.
First discovered by French astronomer Antoine Darquier de Pellepoix in January of 1779; it was then independently discovered by Charles Messier a month later. Both Charles Messier and William Herschel believed M57 to be comprised of multiple faint stars, but were unresolvable in their small telescopes.
‘X’ Marks the spot for M57.
My Observation: With the 25mm at a magnification of 30x this small ring shaped object looks to be a bright gray color, but very small in size. Easily overlooked as just another star, but once you focus on it – especially with averted vision – you can make out that it is a ring shaped object. Remind me a lot of a Cheerio, or a Donut. Stepping up the magnification to the 12.5mm giving me a magnification of 60x, M57 doesn’t lose any brightness, but gains in size. It’s shape, and the fact that it’s not another star in the eyepiece, is much more visible. Looking like a smoke ring from a cigar smoker, it’s just about perfectly round.
M57 – The Ring Nebula. 5-12-12. Click to Enlarge.
This is 18 images at 30 seconds a piece, ISO1600 stacked with 15 darks and 20 bias frames. I could have probably gotten away with doing it at ISO800, and still maintaining the colors I got. Stacked in Deep Sky Stacker and post processing in Gimp.

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