not at the same time, after the first one has been verified. basically after the manufacturing, calibration, tuning, assembly, etc. techniques have been perfec

not at the same time, after the first one has been verified. basically after the manufacturing, calibration, tuning, assembly, etc. techniques have been perfected to the required degree plus, it would make sense to try to repeat this a few times always trying to 80-20 it. (I mean intentionally trying to "half-ass" the next iteration. spend less on it than on the previous one, and try to get the best out of that budget - with the same tech of course.) the big problem is that ... it doesn't make much sense to do this. JWST delivers the data for the science it was intended and ... for the new questions that we'll raise we'll probably need some even more specialized observatory.