Also known as: M57
Date/time: 2013.10.29. 17:10 – 17:30UT
Equipment: 235/1280 Dobson – OptiScope
Magnification : 64x, 85x
Seeing: 7/10
Transparency: 3/5
Temperature: 18°C
Humidity: low
Wind: –
Location: Zákány, Hungary N46°14′ 59,2″ E16°57′ 15,3″
Observer: Bognár Tamás
Digital sketch made with GIMP 2.8 + Wacom Bamboo Fun, based on a raw graphite sketch.
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.
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