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Are there inherent limits to Interferometer size?
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[QUOTE="Baluncore, post: 6813904, member: 447632"] To maintain a higher resolution in the u and v axes of the image, you will need to expand the array in two orthogonal directions. If your interferometer array is wide and sparse, then there may be many possible time delays that will correlate. That may introduce artefacts into the image. It may take a longer time to establish the correlation between some sites. How much correlator time can you afford? You will need clocks with lower phase noise for more widely spaced arrays. That is a square law problem, better resolution requires better clocks, and those clocks must be distributed over a wider space for the bigger array. You might do better by increasing the frequency, which reduces the wavelength, thereby increasing the angular resolution for the same array. You will then need proportionally better clocks. I see no brick wall limit, but there is an economic budget with rapidly diminishing returns. You correlate waves, not photons. [/QUOTE]
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Are there inherent limits to Interferometer size?
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