Average stellar spectrum of the master cube of the second night (black), compared to a continuum-normalized rotation-broadened PHOENIX model in red (Husser et al. 2013) and a telluric transmission spectrum as obtained using ESO SkyCalc in blue (Noll et al. 2012; Jones et al. 2013), both convolved to the spectral resolution of SINFONI. There are few stellar absorption lines in this wavelength range, and the data is dominated by telluric absorption bands due to water, CO₂ and methane. The grey regions at the edges of the waveband were discarded due to strong telluric bands of H₂O and CO₂ or bad pixels that are close to the edges of the detector.