Sky distribution of the 5259 confirmed clusters of galaxies in the cosmology subsample, detected in the western Galatic hemisphere of the eRASS1 All-Sky Survey in equatorial coordinates. The common footprint between the Legacy Survey-South and eRASS1 reaches up to 12 791 deg². The sample covers a redshift range of 0.1–0.8. The redshifts of the sources are color-coded, and the sizes of the marks are proportional to the observed eROSITA X-ray count rate. The overlaid image in the background shows the exposure map of the eRASS1 Survey in the 0.2–2.3 keV energy band. The regions plotted in solid lines show the footprints of optical surveys employed in the week lensing mass calibration DES in blue, KiDS in red, and HSC Y3 in green, covering 4968 deg² in total.