Jean-Luc - that's a loaded question! On the limited topic of optical trains, I have an optical train for guiding set up as I described and that's the train I select in the guide module and it works really well. In the other EKOS modules (Capture, Focus, etc.) I have an optical train for imaging selected (which is the train that includes my primary imaging camera).

While I think this may have a positive impact on guiding (only your experience will tell), there are so many things that go into good and bad guiding I hesitate to declare that this was the cause of drift!

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