This is a really tricky objekt due to it's wide dynamic range. Only the great cooperation with Ralf Burkart made this result possible. Ralf was responsible for the center of the eye. He used a 10" Newton and short exposures between 2 and 9s. I was responsible for the weak outer part of that cat eye and i used stacked 10min exposures. The total exposure is about 9h. The final image is a mix of our individual image processing results.

best regards