Fig. 4
Comparison of the grid model with the Qφ image. Panel a: Qφ image after 8 × 8 binning. Panel b: image of the best-fitting grid model convolved with the instrumental PSF. Panel c: residual image obtained after subtraction of the PSF-convolved grid model image (panel b) from the Qφ image (panel a). Color bar shows flux in counts per binned pixel.
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