The new Bruker Optic EM27/SUN Series spectrometers represent FT-IR Remote Sensing analyzers dedicated for atmospheric measurements. They quantify gases such as carbon dioxide and methane in the atmosphere by analyzing the radiation of the sun utilizing the CAMTracker system. This is an innovative camera-based feedback system following the sun as light source. The EM27/SUN Series spectrometers provide a very compact and robust design, relatively low weight, and an intuitive user interface. They are highly portable and hence ideally suited for long term measurement campaigns in remote areas with little infrastructure.