[Al B.]

In addition to having viewing power 10 times greater than that of Hubble, the GMT will also have four times the power of the highly-anticipated James Webb Space Telescope, scheduled to launch on October 31st, 2021.

Big advances in optics technology in the last couple of decades have made giant ground-based telescopes feasible again. The GMT will be built at a fraction of the cost for getting the Webb telescope up and running and have 4 times the resolving power.

Hats off to the folks doing this project (U.S. led consortium). Still an area where there's real science going on.

[DUMBGRUNT]

—”Big advances in optics technology in the last couple of decades have made giant ground-based telescopes feasible again. “

Guessing that, they use digital correction to compensate for the earth’s atmosphere?

Used to be an airborne telescope mounted in a 747(?) FLYING AT 40,000 FEET.

STILLING FLYING:
https://en.wikipedia.org/wiki/Stratospheric_Observatory_for_Infrared_Astronomy