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Dew Bands


Guest CodnorPaul
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Guest CodnorPaul

Is there a more technical way to tell if your dew bands are working rather than just cranking the heat up?  Reason I ask is last night my corrector plate dew band felt slightly warm to the touch after using for a few hours, but my newly purchased 2" EP dew band didnt feel warm at all inside or outside the band.  The controller is a Revelation 4 port 2 channel controller and I was running both from the one channel so they should have been getting the same voltage.


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I wouldn't know how to check electronically - some sort of avo meter I guess - but I would experiment at home first. Pop each band on a different port first and see if they both warm up - then try both on the same port and see what happens. If the eyepiece one doesn't warm up as well then try it without the larger band - entirely on it's own to see if it's actually working. :)


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I have found from time to time that my ep heater strip feels cool, but the thing to remember is, your dew bands could be in contact with metal, which is a conductor, so the bands may feel cool depending on the temperature of the metal. I just cranked the heat up and put it on the back if my hand, it soon felt warm so I knew all was well.

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