For those not familiar with the device, it is a camera mount for astrofotography that allows to compensate for Earth's rotation (to some degree). This allows lo

For those not familiar with the device, it is a camera mount for astrofotography that allows to compensate for Earth's rotation (to some degree). This allows longer exposure times without the photographed objects turning into streaks. As the submitted posting only contains schematics, I suggest you also have a look at the Wikipedia [0] article as it contains some pictures of the device. [0] https://en.wikipedia.org/wiki/Barn_door_tracker https://en.wikipedia.org/wiki/Barn_door_tracker