My polemaster and guide camera (QHY 5L-ii) are connected to my laptop USB 3.0 ports, they draw battery from the USB ports, with an external laptop mobile battery (65Wh) charging the laptop through an USB Type-C port, the laptop can last for around 4 hours at room temperature before it dies, it works just okey but I wonder whether the polemaster and guide camera can be connected to a self power USB hub (connect to a 12V mobile battery) instead to avoid draining off the laptop power?
If it works, any one experienced any particular problems if the imaging camera is also connected to the USB hub but not directly to the computer? Will the images sent through the USB cable slow down the frame rates of the polemaster and guide camera?
Do I still need the USB hub if I'm getting a raspberry pi based computer (e.g. StellarMate), it needs 5.1V.
Appreciated if anyone can share the experience, many thanks!