On one of the best nights I have ever seen that I was lucky enough to have great gear out , this was up in Darwin , 806x on Saturn using my M210 and 3mm TV radian and as Adrian says I was using an Ioptron IEQ45 that was tracking flawlessly , it looked like the best ground based photo I had ever seen ,, once in my lifetime experience that night ,,,,, so far .
Brian.