The BALs of J1205−0000. The top and bottom panels show the normalized spectrum around C IV from the NIR arm and N V from the VIS arm, respectively, with the wavelength converted to outflow velocity. The NIR arm spectrum is smoothed with a Gaussian kernel with σ_kernel = 5 pixels (FWHM ∼ 180 km s⁻¹ at C IV), while the VIS arm spectrum is smoothed with σ_kernel = 15 pixels (FWHM ∼ 220 km s⁻¹ at N V). The two outflow components are shown in blue and orange for each line. The vertical line at 6050 km s⁻¹ in the bottom panel corresponds to the central wavelength of Lyα expected from the Mg II redshift.