Spitzer IRAC images of comet C/2014 Q2 (Lovejoy). Top row: 3.6 μm images. Center row: 4.5 μm images. Bottom row: derived CO₂ gas maps. All images are displayed with an asinh color scale intended to show both the low-surface brightness instrumental background and the bright cometary core. Arrows indicate the projected Celestial north (N), Sun (⊙), and velocity (v) vectors. Each subpanel is 8﹩\mathop{.}\limits^{^{\prime} }﹩1 × 8﹩\mathop{.}\limits^{^{\prime} }﹩1.