 The new Fabry-Perot interferometer, FPI, based spectral camera is a lightweight, unmanned aerial vehicle, UAV, that can be used to measure and monitor the environment. It is highly relevant for precision agriculture, as it provides accurate measurements of crop health and biomass. Empirical tests conducted on an agricultural wheat test site demonstrated its accuracy and reliability. This article was authored by Jussi McKinnon, Paula Litke, Temuha Kalla and others.