Managing Trees In Astroimages using GIMP

This video describes how to make a copy of a tree within an image using a layer mask in GIMP. The copied image of just the tree can then be added back onto an astroimage after the light pollution has been removed to give a much better looking picture or used on other pictures if you wanted to add a tree. It is a step by step video that follows on from the How to Remove Light Pollution using GIMP that can be found here http://www.learnastronomyhq.com/articles/how-to-remove-light-polluti/