Mesh plots of the binary system ET Cru at orbital phases 0.75 (left), 0.85 (middle), and 0.95 (right), generated with PHOEBE v2.4. The color scale represents the local effective temperature across each stellar surface, while the mesh structure traces the distorted Roche–lobe-filling components. The sequence illustrates the changing aspect of the system as it approaches secondary eclipse (phase 0.75) and moves toward the quadrature (phase 0.85) and preeclipse (phase 0.95) configurations.