When using the ZWO-ADC and the ADC alignment feature in Firecapture, I'm getting stable circles to work with and they seem to align vertically without any trouble when I position the prisms. However, the circles end up SLIGHTLY beside each other and not directly on top of each other. Is this an indication that the ADC is not EXACTLY horizontal? The bubble level on the device is very helpful but probably not entirely accurate as the bubble is about 50% of the volume of the liquid-filled tube.
Thanks ahead of time for the help,