Clayton Bay is the dew city of the entire solar system. I gauged 100mm last year in dew. Summer and winter the only time dew does not occur is when the wind comes from the north. Totally bizarre. I use a dew heater on both scopes and that is all. Dew drips off everything. Next day I open up the observatory for a bit to get the heat in again and that is all I do. Nothing is rusting or corroding. I would not bother too much. Canberra is very dew too as Anthony and I have talked about this issue many time. Personally I would not bother with dessicant as you will be re-charging it every couple of days. Your gear is built for dew and will last out the dew better than you might think.
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