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Mozhoven
professor emeritus
Reged: 05/26/05
Posts: 728
Loc: Middletown, CT
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Re: DIY Dew Controller Questions...
06/25/08 10:57 PM
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Maybe I exaggerated how hot the strips are getting. They certainly aren't hot enough to burn, but seem to be making the mirror (at least) rather more hot than ambient.
The eyepiece strip I have is retail, while the secondary heater is DIY wired in parallel.
I thought that a light bulb would be a good idea and picked up a red light (not LED) from Radioshack. It certainly is a good indicator of power, but again it will top out very close to 0 on the dial.
I suppose If I could dial in the voltage/pulse to a decent temperature above ambient I should be ok on most nights providing the dew doesn't go crazy. But if I can make the pot work correctly, I'll be much happier.
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Jeremy Davis
Orion XT12i - 12" f/4.9 "Alfred E. Newtonian"
Wyorock Custom Crayford
12x60 Oberwerk Binos
www.jdavisgallery.com
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