M57 widefield color picture

M57 widefield picture taken 25. April-10 in Copenhagen, Denmark area. Exposure times: 7*5min.
WO FLT-110 and Canon 20Da ISO800 settings used. Due to heavy lightpolution an astronomik CLS EOS clip filter used and to get round stars to the picture edges a WO fieldflatner was mounted.
Picture processing done via ImagesPlus; darks, flats and DDP used. Adobe photoshop picture enhancements techniques was also performed on the picture.