[APML] Coping with dew

[chrish@easynet.co.uk]

I had a long photography session last night (my first with this rig), some 6 
hours in total. By the end of that time my Genesis SDF was heavily dewed - 
including the objective. I need to do something about that but how much heat 
can you get away with using before damaging image quality? I had carefully 
cooled the thing down for an hour before starting so it seems a bit stupid to 
start heating the thing up again. How do you guys cope with it?

ChrisH

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