Structural analysis for the cluster Berkeley 29. Left: analyzed 20′×20′ arcmin frame with the estimated cluster region enclosed in a red circle. Asterisks in the equatorial coordinates of the left plot indicate that these were shifted and transformed so that the center of the frame is located at (0, 0) and to remove projection artifacts. Center: same frame, but shown as a 2D density map. Right: radial density analysis, axis shown in logarithmic scale. The dashed green line and the shaded green area are the King profile fit and its 16th–84th uncertainty region, respectively. The green dotted vertical line, solid red vertical line, and solid green vertical line are respectively the core (r_c), adopted (r_a), and tidal (r_t) radii. The dashed and dotted horizontal black lines are the field density estimate and its ±1σ region, respectively.