Bets anyone?
When we have a large enough footprint on the moon that we can build scopes there from lunar materials, I wager that we will build scopes there. And that the difficulties mentioned (mainly dirt and gravity) will be overcome.
Surely if the gravity issue was so bad on the moon, then we would have stopped making terrestrial scopes long ago, since it is so much worse here.
Any takers? Since I will be long dead, I don't mind betting in the millions.