Anyone know the resolution of the FLIR camera? Specs don't seem to list the thermal camera resolution, only up-res one. The last revision was kind of weak, low-res with a max of only 120°C or so, if memory serves right. The improvement to : -20°C to 400°C is a happy step forward.
https://www.flir.com/products/lepton/
Scroll down for full specifications.
Key property is also thermal sensitivity, which for Lepton 3.5 is <50mK. Better sensitivity and you will be able to see finer gradients or need less temperature gradient to observe.