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With modern guiding programs, slightly out of focus and distorted star images should have little effect on guiding.. I reckon give it a fly despite what the stars look like.. You should find that it wont make much difference at all.. When I used an OAG with my C11 the stars were horribly out of shape, didn't seem to affect guiding at all.. same with using the ST9E's self guide chip... I must say, I don't know just how distorted the off axis stars would be in the 8" RC but I'd imagine them to only be slightly skewed... ?
Great image in any case Paul. The repro was very nicely done! Colours and detail both look very good.
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