Redefined blaze function R(λ), according to (Eq. (A.6)), estimated for CTIO/CHIRON spectra. It is plotted in absolute, analog-digital units (adu) and for shifted wavelengths λ − λ_c, r, for each order r. The rectification method was resimplex1. Colours correspond to χ² contributions. The total χ² = 666239 (unreduced) is a measure of correspondence between the rectified observed spectra and the synthetic (rectified) spectra.