Just figured out how to do the aspect ratio. Anyone using Paint shop and is new to it like me...Use the crop button and drag your pointer around. At the bottom of the screen it will show the ratio which in this case 1.332512 : 1 or 320 : 240.
Here is North America at night: By the way, this picutre is not of my makin, I only cropped the original. The full shot was compiled from over 3000 images in order to get a clear picture without clouds. Pic By NASA.