Simulated images of Hα at nominal line center, Δλ = 0 Å, from the model atmosphere in vertically emergent intensity. The images are given in brightness temperature T_b and are clipped at 2.8 and 8.5 kK. Panel a: 1.5D radiative transfer where each column in the snapshot is treated as a plane-parallel atmosphere. Panel b: full 3D radiative transfer. The minimum, maximum, and average T_b for the entire field of view (FOV) is provided in a label above each panel.