fliglera Do I need to install anything like an ASCOM driver ?
No. ASIStudio goes through libusb, which is preinstalled in macOS since at least before MacOS X 10.4. You do not need anything else. (If you did, ASIStudio would not have been able to detect the existence of the camera.)
If you are using ASICap in ASIStudio, select the camera from the popup menu, and then set it to run (the right arrow next to the camera popup menu). Now check the histogram.
If the histogram is mostly on the left side of the graph (i.e., under-exposed, hence dark image), increase the exposure value (using either the camera gain slider, or the exposure time slider, or both) until the curve peaks near the middle of the horizontal scale of the graph. For your camera, there are 3 curves in the same graph, for the red, green and blue sensors.
Make sure you are focused if you are pointed to the night sky, or you will see nothing since the photons from each star would be spread over too many pixels. When you are over-exposed and still not focused, you will see a screen full of noise, with random dark and bright horizontal lines.
FWIW, ASIStudio works on my Macs all the way back to a 2009 Mac Pro, to the M1 Mac Mini and M1 MacBook Pro (using Rosetta translation for Apple silicon).
Chen
