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Originally Posted by janoskiss
I'd have to disagree with Ken on this. As I do own both scopes I can say with absolute certainty that in good seeing the 12" blows away the 8" on planets, even more so than it does on DSOs.
BUT the 12" needs more time to come to thermal equilibrium and before it does the views are disappointing. But once both scopes are properly cooled the amount of detail seen through the 12" is astonishing. E.g., on the surface of Jupiter you see a lot more intricate detail etc. etc.
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Thanks Steve.
Very good point!
We will leave the scopes to cool longer next time before comparing. They were only cooled for about half an hour from a warm clubroom to a freezing outside temperature.
