On a night of reasonably good seeing and guiding through the 12" F3.8 Newtonian, with FSQ106EDX4 and all
associated imaging and focusing gear on top, at a guide image scale of 3"/pix, this is average guide
errors of under 0.2 arc sec! Simply incredible! That's without absolute encoders, no PEC nor adaptive
optics and polar alignment was achieved just using the right angled polar scope...a superb instrument!