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Fig. 2

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Scatter of the offsets that had to be applied to the matrices of transformation from the spacecraft to celestial coordinates, for observations made in the UV mode (left panel) and in the NG mode (right panel) before (colored symbols) and after (black symbols) the adjustment of the original orientation calibration by − 0.4° in azimuth and + 0.06° in elevation. The crosses mark the one-sigma ranges of the respective distributions.

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