Fig. 12
Magnitude difference between OmegaWINGS and SDSS photometry transformed into the Johnson’s system for stars brighter than V = 20 mag as a function of the position on the OmegaWINGS detector. In the right panel the result is obtained from the final OmegaWINGS calibrated catalogue, while the photometry in the left panel was obtained with no illumination correction.
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