Observed azimuthally-averaged radial profile of the total intensity in the second-epoch cntHα images (full black line) compared to models with τ_V = 0.65, R_° = 1.5 R_⋆, and n = 4 (dashed red line), τ_V = 1.3, R_° = 1.45 R_⋆, and n = 4.5 (dotted green line), and τ_V = 1.9, R_° = 1.4 R_⋆, and n = 5 (dotted-dashed blue line). The values of R_° and n for each of the dust models shown have been determined by fitting the radial profile of the polarised intensity. For reference, we also show the radial profile of our model star with no dust envelope (double-dashed purple line).