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|Description:||M 57, The Ring Nebula, was created thousands of years ago when the old, hot central star blew off its outer layers. The star produces strong ultraviolet radiation which is causing the gases in the nebula to fluoresce.|
|Distance:||2 thousand light years|
|Date:||5 march and 20 june 2005|
|Equipment:||12" RC @ f/9, ST10XME|
Ha: 90 minutes at 6nm
RGB: 40-40-45 minutes (2 x 2)