Left: λ_max map for NGC-3244, obtained by fitting Serkowski laws to each 5 × 5 pix² bin and filtering the results of those fits using the criteria defined in Section 4. Center: λ_max map inference performed by INLA on the λ_max map on the left. Right: b_HIGH pointing image of NGC-3244 (MW field star regions were masked during the data reduction process). All images are presented at the same spatial scale.