Can I really only use one computer, Doppler? I would have to get 2 programmes running at the same time. Do I minimise one then try to open another? Then each cable from the 2 cameras will go into a USB port, then there is the c ontroller cable to the computer. What about the screen? What appears on the screen? So far I count 2 cables from each camera, two from the hand controller - that;s 6 so far! Then there is the cable from the car battery on the ground. Goodness me! What a load of spagetti! Think I might stick to my DSLR.....only, I have already bought the astro cameras, guide scope, IR filter, extra cables, 200mm f4 scope, HEQ 5 mount, and laptop (cheapo one) . At least I will be able to find a use for the O111 filter I bought many years ago!!!!