Bognár Tamás M57 2013.10.29.  Zákány
Bognár Tamás M57 2013.10.29. Zákány

 

Bognár Tamás M57 2013.10.29.  Zákány
Bognár Tamás M57 2013.10.29. Zákány

 

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.