As said, theory not always matches practice. I observed a dead-center Jupiter in the smalles possible ROI in FC for about an hour, not that high in DEC. As an evidence, I do have gigabites of SER files showing this behavior. I had never observed that before, and will probably never achive this again. Without PHD guiding, I would have to execute many manual corrections with the hand controller between the individual R,G, and B channel recordings to keep a planet in the ROI. In my rare situation, there was no need to manual correct, but perfect guiding. As I have written extensively already, I do have no light frames to inspect in PI, since I did planetary imaging on that particular evening. Whatever this is unbelievable or not, it is what I observed, and these are facts, which is supported by the SER files I do have, whatever this may be theoretically substantiated or not. I know very well how to handle PHD logging, but, honestly speaking, it’s all about what we observe, and what’s practical. I don’t worry about what is theoretically impossible if everything works well while there are rare favorable circumstances that I can take full advantage of.