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Got the stepper drive working on the focuser now and works a treat. But there was some hurdles along the way. It wouldn't be an ATM project without a snag or two.
Remoting the filter wheel next.
Got the guiding working properly now, I had it set too aggressively and now it only needs a nudge every 10 sec or so. It was a mystery at the time as it was acting like it had pec error, but the band drive has almost no backlash and minimal pec error. When I turned guiding off the pec error went away and I could do 1 min subs with nice round stars. Presto software issue identified.
Three of the Grus quartet, very happy with the mount.
Justin
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