Final PIPPIN data products with different levels of IP correction. From left to right: median total intensity (I), polarised intensity (PI), and the azimuthal Stokes components Q_ϕ and U_ϕ of HD 135344B observed in the Ks band. From top to bottom: equalised ordinary and extra-ordinary beams, IP-subtracted, crosstalk-corrected, and U_ϕ-minimised results. The total intensity is shown with a logarithmic scale from 20 to 10⁴ counts, whereas the other panels use a linear scale from −5 to +5 counts and a logarithmic scale up to ±90. The negative signal is depicted in orange, and in each image north points up and east to the left.