Sky distribution of the CLASSIX galaxy clusters in the redshift range z = 0−0.02 in equatorial coordinates. Clusters in the ZoA are shown as open circles, while all other clusters are marked with filled circles. The small brown dots show the galaxies from the 2MASS redshift survey (Huchra et al. 2012) in the same redshift range. The two black dotted lines show Galactic latitudes of b_II = ±20°, the blue lines show the boundaries of the zone of high galactic absorption with a hydrogen column density n_H ≥ 2.5 × 10²¹ cm⁻², and the two solid red lines show the Supergalactic latitudes ±20°.