Well, you should be able to do so now since the ASIAIR just detects the type of camera connect via USB.
The main issue is how to determine which camera is the main camera and which is the guide camera when selecting a camera from the drop down boxes.
Until ZWO comes up with a way to allow name customisation of a connected USB device that it remembers (so even when turned off with everything disconnected then reconnected and turned on it still remembers the name) the only way I see to do this is as follows:
- Set it up all your equipment. Don't connect ASI585MCs to the ASIAIR USB ports.
- Turn on ASIAIR.
- Connect first ASI585MC (to be the main camera) to ASIAIR via USB. In ASIAIR App - go to Main Camera and select the ASI585MC from the drop down. Make sure its powered on and enabled in ASIAIR.
- Connect second ASI585MC to the ASIAIR via USB. In ASIAIR App - go to Guide Camera and select the ASI585MC from the drop down. You might now see ASI585MC (1) and ASI585MC (2) in the camera listing. Select ASI585MC (2). Check the Main camera is ASI585MC (1). Should now be able to make sure guide camera is powered on and enabled in the ASIAIR.
This is all just a guess, mind you, as I don't have two of the same ZWO cameras to test this out.