[edwin hubble]

Visual wavelength interferometry...br> Yes, it can be done...
Synchronizing, aligning, with an Earth-moon baseline will be the challenge
but by the time we are ready to install on the moon, we would have the technology.

Eventually a baseline of Jupiter-orbit size.

[longshadow]

Eventually a baseline of Jupiter-orbit size.

Heck, a continent-wide baseline would produce prodigious results at optical frequencies..... why wait?