Normalised CRIRES spectra showing examples of observed stellar and interstellar features. The ordinate is the normalised flux plus an offset with the abscissa as the wavelength in nm. Stellar lines: Red stars: 1315.4 nm; Green: 1316.8 nm; Cyan: 1316.5 nm (EmL); Purple: 1317.3 nm (EmL, uncertain); Light Green: 1529.9 nm; Yellow: 1566.1 nm (EmL); Gold: 1563.0 and 1563.5 nm; Navy: 1633.8; Brown: 1555.7, 1610.9, 1616.7, and 1634.2 nm (EmL). Not shown: 1562.4 nm, 1625.3 nm and 1626.1 nm features. DIBs: Blue squares: 1318.1 nm; Green: 1527.1 nm; Cyan: 1561.1 nm; Purple: 1565.1 nm; Pink: 1567.0 nm. Not shown: broad and weak feature around 1564.4 nm.