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Most NOEMA data include several wide bands (4 with PolyFix in its standard
mode), and an independent Self-calibration solution is computed for each
of them. The COLLECT button will merge all these solutions
into a single one, assuming the phase errors are due to pathlength changes.
This improves the S/N of the self-calibration solution, and can
be beneficial when the S/N is the limiting factor. On the other hand,
if the data has very high S/N, this step may result in lower dynamic
range than the application of the separate self-calibration solutions.
Gildas manager
2023-06-01