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Thanks for the notes on everything tony. I think, if I am right, in seeing what you have written to date - the steel tube in the new version is better than the aluminium due to coping with temperature ranges better. The focuser on the new seems good on its own, so an older one with feathertouch may not amount to much difference. I have also seen the new scopes have better optics from another post.
So that said I would be after either new or something like a good secondhand 2015 model.
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