Of course I haven't seen the details of this telescope, but there are some basic limiting factors of earth based, optical telescopy:
1) light pollution (mountains of Chile are good, but it gets worse all of the time)
2) Glass is still a fluid, not a solid. (did you ever see 100 year old windows?) No matter how you polish it, it will slowly flow out of focus. Remember the first Hubble Telescope lens? It is hard to do right.
3) The Atmosphere changes with wind, uneven clouds (jet trails), pollution, ozone, and temperature. Stars twinkle for a reason. It hurts optical viewing and stability; and it gets windy in the mountains; even small telescopes shake.
4) Elon Musk, and his ilk, and his ongoing pollution of the heavens of satellites and space junk. Probably integrated out, but limiting nonetheless.
I recall a while ago reading an article suggesting that a 200" optical telescope was about as big an optical telescope that could be built with a single lens. Of course, multiple mirror, optical lens telescopes have been built that try to get past these limitations:
https://www.google.com/imgres?imgurl...MygDegUIARCfAg
Optical telescopes are the most viscerally enjoyable and accessible, but they (obviously) still cover only a fraction of the EM spectrum. Since it has been determined that most of what is out there is Dark Matter, there are so many more structures out there to find (without getting a crick in your neck). But I digress.
Larry
DevilHorse