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Thanks Andrew. I was conscious of the 5 x pixel size guideline but more or less reconciled to being unable to reach that with my f3.8 newt unless I also used my x5 Barlow. I guess the main reason was (is) the difficulty of getting the planets in the FOV with such a small object. But I can see that I will have to fine-tune my visual finder and find a bit of patience. Story of my life!
Peter
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