Sky-subtracted and normalised VLT/FLAMES spectra of three RGB stars in the Sextans dSph (DM272, DM601, and DM478), with a range of [Fe/H] ∼ − 1.5 to −3.2 and υ_los ∼ 230–240 km/s and all with S/N ∼ 35 per pixel. The three Ca II triplet absorption lines are easily visible in each spectrum at λλ8505 Å(EW1), 8550 Å(EW2), and 8670 Å(EW3), indicated with black arrows at top of the plot. The green sky spectrum is also normalised and plotted on the same scale. All spectra except DM601 have been arbitrarily shifted in flux to allow the spectra to be plotted together.