This post was originally written in December 2016, but has been completely revised and simplified for December 2018.
I’ve been fooling around with a Flir One For Android thermal imaging device for about two years, going into my third winter now. It’s kind of neat, but it’s not an essential tool for backyard beekeepers, certainly not for beekeepers on a budget. Whenever I use it on a cold winter’s days, it usually dies in about 5 minutes, even when it’s fully charged. So whatever photos or videos I take with it, I have to move quick.
An example of using the Flir One in the dark: