Five strongest "C₂ DIBs" toward Sk 143 (SMC; left) and Sk −67 2 (LMC; right), compared with those toward Galactic star ρ Oph (bottom spectra; shifted to same velocity). The vertical scale is expanded by factors of 5 for Sk 143, 10 for Sk −67 2, and 5 for ρ Oph. Note also the possible absorption from the weaker C₂ DIBs at 4980 and 5170 Å in the spectra of the 4985 and 5176 Å DIBs (offset by about −315 km s⁻¹ in each case). Absorption from DIBs at 5780 and 5797 Å and from CN is shown in the bottom three pairs; Galactic absorption from those two DIBs is present near 25 km s⁻¹ toward Sk −67 2.