We developed a novel observation tower equipped with optical sensors to autonomously collect hyperspectral reflectance measurements ranging from 350 to 2500 nm along with other optical and infrared data from land surface at a rate of approximately once every minute from dawn to dusk throughout the growing seasons. The purpose was to observe and track carbon exchange between plant and atmosphere that is invisible to the human eye. We successfully estimated plant photosynthesis and respiration by modeling temporally varying limiting factors influencing the plant functions using optical data. In this seminar, I will discuss how we designed our observation method for invisible phenomena using an optical sensor, the implications of the EcoSpec project outcomes on hyperspectral imaging, and what the possible future of hyperspectral imaging may hold.