> You don't want a dish that is continually changing shape. https://en.wikipedia.org/wiki/Adaptive_optics https://en.wikipedia.org/wiki/Adaptive_optics Decent

> You don't want a dish that is continually changing shape. https://en.wikipedia.org/wiki/Adaptive_optics https://en.wikipedia.org/wiki/Adaptive_optics Decent ground-based telecopes have to constantly change shape anyway. Perhaps it would in fact be easier to manage with a balloon. JWST also unfolded from panels, so presumably has a way to calibrate itself.