Second, a baseline of 200AU is vast, vast overkill at this stage. The baseline of the above telescope array is 130 meters. I’m not sure what the resolving power of your 200 AU interferometer (accurate distance to within a few hundred nanometers, a small fraction of the wavelength!) would be at 230 lightyears, but I suspect license plates wouldn’t be that hard to resolve (and perhaps the detailed anatomy of bugs splattered on the windshield too though the bugs would have to be pretty bright at those frequencies for the telescope to see them). You might be easily resolving planets in nearby galaxies! But if you can do it, it would be cool.

A nicer feature of putting something that far out is that you don’t have to worry about the Sun as a heat source. You’re very close to background temperature. For a closer place to observe from, the Moon is pretty nice. The far side of the Moon during the night can get pretty cold. You would have great two week observing sessions. But these are more mundane and pretty routine speculation.

The ultimate place for observatories would be in the voids between the superclusters of galaxies. Some of these are several hundred million lightyears across.

Now the brown dwarf is just the big blob in the picture, and we’re looking at a planet that orbits it. Amazing.