The AstroCan AutoDome replaces the Syren10 and provides precise dome positioning.
You will need a simple H-Bridge motor controller like the BTS7960 and a 12/24V motor, such as the JGB37-520 with a Hall encoder. If you already own the Syren10, it can be used in place of the BTS7960.
The AstroCan system has its own support website: https://nextgenastromech.net/