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 M57 Ring Nebula 
100% Crop @Center

Full Resolution 2003 x 2002

Optics: Takahashi FSQ-106EDXIII F/5 530mm. - APO Refractor
Mount: AP Mach1 GTO on Gemini Q-Lock tripod
Camera: ATIK 4000LE with SX USB Filter Wheel
Filters: Baader LRGB 2"
Guiding Systems: Unguided
Dates/Times: 4 Giugno 2010
Location: Pragelato - Turin - Italy
Exposure Details: L:R:G:B => 10:7:8:10 = > (10x1):(7x1):(8x1):(10x1) [num x minutes]
Cooling Details: -15C
Acquisition: Maxim DL/CCD, Perseus
Processing: Maxim DL/CCD, PS with Noel Action, GradientXRemove
Notes: This image are unguided, with bad seeing