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Clive,
that is not really the issue. My point was this thread is a discussion on the RC, not on an alternative. The other night the dew was very strong but I did not find any dew forming on the optics of the telescope. In fact the only telescope that get dew on the optics is my C14. This is at a site which dews up at the fastest possible rate.
However, even if I were to use a dew heater, it would have not even the slightest effect that dew heaters have on corrector plates or maintaining heat in the tube.
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