The following image shows the complex ray systems of the lunar craters Copernicus and Kepler. The negative image shows the extent of these systems a little better.
The acquisition was done with the 14inch Newtonian and ASI 174MM camera under very poor seeing conditions at -16 degrees Celsius and a lot of fog. The final image is a true color one, with color data from RGB filters.
maximus photography 
Exceptionala.
Multumesc Dragos!