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Author Topic: DIY Dew Heaters  (Read 6396 times)

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Offline petevasey

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DIY Dew Heaters
« on: 14:32:36, 25 May, 2010 »
For several years now I've had a 'Dew Heater' page on my web site.  It showed how to make heaters using thin copper wire permanently wound around the end of the telescope tube.  But not so useful for small telescopes or camera lenses.

But I've finally got round to putting up instructions on a 'resistance ladder' type heater.  Transferable and more versatile.

See, in particular

Just to add to the above, here is a link to a commercial controller which also includes comprehensive instructions for DIY heaters (link in sub heading 'Heater Versatility').

Cheers,  Peter.
GSO RC10 Truss, Meade S5000 127, TMB 105, TS65 Quad, Solarscope SV50, Daystar Quark Chromosphere 'eyepiece' filter, Canon 15x50 IS Binos, various camera lenses.   Gemini G41 mount with Pulsar controller. EQ6 Pro mount, EQ3-2 mount with DS Autostar. Star Adventurer mount, QSI 683wsg, SX AO, Art285 (beta), Canon 350D (modded), Canon 700D, GPCAM2 (colour), GPCAM2 (monochrome), LE Vesta Pro, Toucam.

Offline swashy

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Re: DIY Dew Heaters
« Reply #1 on: 17:02:36, 25 May, 2010 »
Very helpful information Peter  :urock:

Imagine...  above us only sky!

Offline Kevin Sweeney

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Re: DIY Dew Heaters
« Reply #2 on: 13:15:09, 05 May, 2011 »
Peter, a good clear write up and very useful.
In my setup I used the heating element out of a discarded electric toaster. It's basically resistance wire and when supplied with a low voltage of about 12v, can provide gentle heating.
A bit more detail can be seen on



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Scopes: 10" Meade LX200, 80mm Apo, Coronado PST, Evostar 120
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