Let's imagine that constructing the telescope for our needs is done. My question is about atmospherical seeing since it has nothing to do with the size of the lenses or with the technology involved. Despite best attemps I suppose that there would be no way dealing with random motion of gases around the earth wich can make dispersion ,reflection , difraction and depolarization of light rays in uncountable limit because it is all random. So for a remote astraunats somewhere in deep space on their remote planet looking to earth even with telescope with the size of milky way or even bigger there will be no way to unblur the taken picture from the atmospherical seeing. Any attemp to catch clear photo would be detronized by the random motion of great content of gase ! If I'm wrong disprove me !