Recent images with AA - constructive critiques for improvement always welcomed

[Forum_2017]

North America Nebula, M39, and Caldwell 30. Details on Astrobin http://www.astrobin.com/users/Harris48Pod/

thx
Charles

[Forum_2017]

Great images, it's only puzzling that the colors seems different:
Caldwell 30 galaxies: excellent "Hubble-like" colors.
North america: blue channel a little too faint (?)
M39: blue channel a little too strong (?)

[Forum_2017]

thanks again...I had big problems getting the stars from green to blue in M39. I think they were possibly a little overexposed. I did not want to settle for green stars in the foreground, so I think I had to accept more blue everywhere...unless there is a lesson to learn about controlling color to that degree.
thank you for the critique. Still trying to learn how to maximize this program in many aspects...
Charles