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Originally Posted by Merlin66
With a pixel size of 0.0056mm in the ToUcam, the resolution/ pixel at 2000mm focal length is 0.5 sec arc. Which would represent very good seeing conditions. Going above this FL will just give better "over sampling" but no more planetary detail??????
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Merlin, the top planetary imagers are using effective focal lengths around 10000mm or more (10m or more). It certainly seems to improve the end result - last season I was using around 6000mm and that wasn't enough. This year I'll be > 10000mm.
regards, Bird