Astronomy Site: Meade Advanced Products Users Group Archive: [M]: Dew heater power output - 12" SCT

 
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Subject: [M]: Dew heater power output - 12" SCT
From: Graeme Coates
Reply To: mapug@shore.net
Date: Sun Oct 12 05:49:42 2003

While you're here, how about checking out the Astronomy Book List ?

I'm looking at setting up a DIY dew heater on my 12" LX200 and I am
looking at using frost prevention heat tape (as used to wrap round pipes
to prevent them freezing in cold weather).

The tape I have seen emits power at 26W/m - obviously, I'd make some
kind of switch box to allow the power to be dropped down when required.

Is this about the right level of anti-dew heat to use across a 12" SCT
(26W over the whole plate), and if not, what is the best power output
for a scope of this size?

TIA,

GC





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