I am hoping to expand my (biology-focused) research to include satellite data. For this, I'd need satellite imaging that includes multiple values in the visible spectrum (specifically, above 490nm) and extends slightly into the infrared (710nm). I have tried MERIS and Hyperion, but the resolution was insufficient (my area of interest is a lake ~300m x 55m). Does anything like this exist, and is it freely available for research use?
Consider WorldView 2 or 3, with 0.5 m spatial resolution and including red-edge and near-infrared bands. However, Worldview images are proprietary data from Digital Globe and must be purchased.