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Newts can be good for planetary as that is what Wesley uses and his images are at the top.
His though has the mirror cooled. That gets rid of the thermal boundary layer on the surface of the mirror when there is a temp difference between the mirror and ambient temp (there almost always is a lag for the mirror to catch up).
So the scope needs fans and better still a cooler to get the mirror cool.
But at that mag you also need good seeing and clear skies.
Greg.
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