Talk about dreaming big and aiming high Luis, wow
, your project is about as ambitious as they come and I wish you all the patience that will be necessary, so far it is really looking quite impressive, indeed!
I have posted this before but it is always good to compare when threads like yours come up, myself and a mate did something similar in the good'ol photographic days, over a single clear night. How far we have come and how much we can do now is really amazing. Unfortunately the only surviving photo of
our mozaic is slightly out of focus, the actual mozaic was significantly sharper, see details under the image
As young men we even contemplated tackling what you are tackling...buuuut gave up after more careful consideration of what it would have entailed
Mike