Relative accuracies ϵ of the hires surface densities and temperatures derived from Eq. (8) (Sect. 3.1.2) with respect to the true model images convolved to the same resolutions. The top row shows the errors in 𝒟_8″ (σ = 0.15), 𝒟_18″ (σ = 0.06), and 𝒟_36″ (σ = 0.05) and the bottom row shows the errors in 𝒯_8″ (σ = 0.06), 𝒯_18″ (σ = 0.05), and 𝒯_36″ (σ = 0.05). At the highest resolution of 8″, the derived images are the most accurate, with the exception of the unresolved protostellar peak surface densities (Fig. 3), which become strongly overestimated (up to a factor of ∼10) because the temperatures 𝒯_{2|3|4} along the lines of sight with large temperature gradients are underestimated. The range of displayed values is reduced for better visibility. Linear color mapping.