[JohnH]

Hello,

I have a new G11G and am just learning my way around the mount - so far I like it very much - superb engineering and good capacity. Now I want to make sure I get the best I can out of this.

I have measured my PE and got the curve attached, it looked ok - not brilliant but comparable with other G11 traces I have seen and with my expectation.

The second attachment is a plot of the guide log from PHD now that is again ok but I am not sure what is causing the spikes.

I have tried the PEC feature in the Gemini but so far it has had no measureable impact on the guided results. I am also playing with PEMPro to try and get a good understanding of the mounts behaviour.

So a few questions :

Is my PE curve OK or is my mount in need of a tweak - in particular the RA worm meshing, I think it might be a little tight?

What is a good set of guide parameters for a G11 with PHD or Guidemaster or AA4?

My imaging scale is 1.4" /pixel (127mm F7.5 with Opticstar 145m) and I am guiding at 2.75" /pixel (WO66 SD with QHY5). I think this should be ok as the guide programs all do sub pixel centroids (some better than others).

How much balance offset do you use? Any tips or tricks to getting the best out of the PEC functions in the Gemini?