Hi Gentlemens I' m beginner with Envi 4.1, I need Help under information for the Spectroradiometers, like mark, model, price and personal experience the us with ENVI.. My experience was with images Aster, Landsat & Spot on class vegetation, NDVI, SAVI I hope you can help me thanks in advance Best regards **Sorry for my bad english, I learning now Bye