Fig. A.5.
Differential phase of the calibrator stars, flattened and stacked in the same way as the AGN. The 23 calibrator files after the GRAVITY intervention in late 2019 are used, which is quantitatively close to the results using the 122 files before the intervention. The rms of the phase at 2.05 to 2.40 μm is reported on the upper right corner of each panel.
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