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Author Topic: DIY Dew Heaters  (Read 6598 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 http://www.madpc.co.uk/~peterv/astroplover/equipnbits/DewHeat.htm, in particular http://www.madpc.co.uk/~peterv/astroplover/equipnbits/DewHeat.htm#Lensheater

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').
http://www.dewbuster.com/controller/dewbuster.htm

Cheers,  Peter.
Telescopes: GSO RC10 Truss, Meade S5000 127, TMB 105, TS65 Quad, Solarscope SV50
Binoculars: Canon 15x50 IS
Camera lenses: Canon 400L f5.6, Canon 70-200L f4 zoom, various old M42 thread
Cameras: QSI 683wsg, SX AO, LodestarX2, Artemis285, Canon 350D (modded), Canon 700D, GPCAM2 (colour), GPCAM2 (mono), LE Vesta Pro, Toucam.
Mounts:  Gemini G41 with Pulsar controller. EQ6 Pro, EQ3-2 with Autostar. Star Adventurer
Observatory: 8' Astronomydome

Offline swashy

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

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 http://www.sweeneysite.com/dew_heater.htm

Regards,

Kevin
Kevin

Observatory with separate warm control room. http://www.sweeneysite.com
Scopes: 10" Meade LX200, 80mm Apo, Coronado PST, Evostar 120
Cameras: Starlight Xpress SXV-H9, HX516, Canon 300D DSLR, Imagingsource DMK21AF04.AS

 

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