I have a C18 scope, Zambuto F/4 and about to order a "{dew buster" controller and "dew-not" heater strips (provide a very uniform heat). I am interested in any comments on how best to prevent dew on this size primary. I see the dew-nots are built up to 16 inch. I am considering also how to attach given the cable sling mirror support. Will also ask the dew-not folks. I might need two narrow strips so I can wrap the mirror on both sides of the cable sling on the circumference of the mirror. As a second option, I have a 12 volt "hair dryer" blower that can gently shoot slightly warm air toward the mirror surface (that I could mount to a truss). This would be used for quick dew-removal; but may also work as the primary dew preventer (instead of dew-not strips) if left operating at low enough rate to keep mirror surface just a few degrees above ambient.
Thanks. Al DenBleyker in Waimea, the Big Island near Mauna Kea
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