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Originally Posted by merlin8r
So, doing the maths on the pessimistic side;
6mm/2.5 = 2.4mm focal length
2350mm SCT focal length / 2.4mm optical focal length=
979X!!!
You don't think this might be overpowering the scope just a teensy bit?
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Like I said... I use a wide range of powers with the barlowed ToUcam the upper limit and that's for collimating on screen when the conditions allow.
It's actually quite a common and accepted practice.
I am also a planetary imager, and they are the focal lengths I work at
