thanks everyone, Mike,
I always record for 130 seconds to prevent rotational blurring. I get tempted to take longer images for Saturn since it has so few spots, but then I stop myself because although taking longer recordings would give a cleaner image, it would remove the possibility of recording fine detail. I'd rather have a slightly noisy image with real data, than a smooth image with no cloud detail.
That night was definately exceptional. I'm still processing the Jupiter images.
Zac
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