Top: two spectra of Venus recorded by TEXES, integrated over the whole disk, covering the 1350–1350.8 cm^-1 range (left) and the 1366.3–1370.0 cm^-1 range (right). The weak, broad absorption band at 1350.20–1350.3 cm^-1 is due to telluric absorption. Bottom: a model of the Venus mesosphere including transitions of CO₂ (black line), HDO (blue line) and SO₂ (red line), shifted by + 0.045 cm^-1, in the same spectral ranges. Two HDO lines and several SO₂ lines are easily identified in the Venus spectra.