Fig. 1

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Exposure-corrected point-source-free 0.2–2.3 keV adaptively smoothed eROSITA image of the eFEDS field. In detail, a point source mask is constructed by excluding regions around each point source in which the surface brightness is above 10% of the background surface brightness. The accumulate_counts program from the contour binning package (Sanders & Fabian 2006) is used to calculate a map containing the radius around each pixel (including those in masked areas) that encloses at least 36 counts (excluding masked sources). This map is used to smooth the input image and exposure map with Gaussians, excluding masked areas, where σ is given by the radius in each pixel. The smoothed image and exposure map were divided to create the exposure-corrected image shown here.

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