Here are a few pictures of how I use this robotic component:

Here you see a two axis gimbal to move my camera. With a angular resolution of 0.03 degree, it should be possible to use this setup to compensate for earth rotation while doing astronomy photography.

The two strain wave gears are connected by a big, bone like part, that was topology optimized in fusion 360 and glued together after printing it in four parts. The parts have holes for pins to align them properly.