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![](https://sopuli.xyz/pictrs/image/3d87a809-b49f-47a2-b46e-2d85d7d2f7a4.png)
I think the rc turbine market is larger than it seems, lots of people have rc turbine model planes, and developing (modeling, simulating, casting/milling) custom turbine hardware is very very involved, not really a nerdy family business kind of thing.
looks like they are just using a cheap ptz security camera. there are some really inexpensive 4k 36x zoom ones available from china, probably almost exactly what they are using.