Hi, I tried a different tack on this today and used a Raspberry Pi in remote mode, using Ubuntu Mate 16.04 and Atik driver 1.8. - the QHY5ii is fine - the Xagyl filter wheel fails due to a permissions error - Ekos still can't 'see' the Atik. I tried running 'atik_ccd_test' on the Pi and it worked! - pings, read ccd, sample data, everything... The output is attached. Any ideas gratefully received. Thanks, GrahamRead More...