Pixelized number density of 22718 cleaned eRASS1 extended sources, that is, cluster candidates in the German part of the eROSITA survey. The HEALPix map has a resolution of NSIDE = 16 $\widehat{=}$ 13.4 deg². The highest number density occurs near the southern ecliptic pole around RA = 90° and Dec ≈ −67° where the exposure time is largest. Another overdensity of extended sources near the Galactic plane around RA ≈ 135° and Dec ≈ −45° is associated with the Vela supernova remnant. It lies outside the common footprint with the Legacy Surveys (see Fig. 2).