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The structure is a dictionary, with tile ID as a string and an entry for every tile. Each entry is another dictionary, containing data about that tile - the connectivity (receiver number, receiver slot, and correlator 'inputnum'), location ('pos' is a tuple containing east/north in metres, 'alt' is the altitude in metres), and cable data (digital gain multipliers, total tile electrical delay ('testted'), cable and beamformer attenuation).
Get a 'metafits' file with observation AND telescope configuration data, for a given observation
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