Upper panel: original NOTCam spectrum of LX Cyg at a resolving power of R = 2500. Lower panel: CRSP (Joyce et al. 1998) and convolved NOTCam J-band spectrum of LX Cyg. Positions of molecular band heads, as identified by Joyce et al. (1998) to be typically present in S-type stars, are indicated. Also the H Pa β line at 1282 nm is indicated, which appears in emission in the NOTCam spectrum taken close to maximum visual light.