Members from the BioMET group mounted the WhiteRef loaned from FEM (foreground) and SIF system (background) to start jointly measuring hyperspectral reflectance and passive (sun-induced) fluorescence at Neustift within the frame of the project COSIF. These measurements will be accompanied within COS/CO2 eddy covariance flux measurements and active chlorophyll fluorescence by means of a moniPAM.