M27 taken using my new IV Field Flattener. Not a brilliant shot only 12 light frames of 120 seconds (clouds ruined play) taken using W/O Megrez 102 and a Canon EOS450D camera.
The field flattener has certainly done its job, no coma on the stars at the edge of the frame. This is a full frame photo there has been no cropping whatsoever done to this.