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Originally Posted by higginsdj
Is there any particular reason people use resistors rather than Nichrome wire? I thread soem nichrome into some heatshrink tubing, run 4 strands attached to switches such that I have 4 settings. Works great on my 14" run inside the end lip just in front of the corrector plate. With a simple foam dew shield I get complete protection on nights of 90%+ Humidity and freezing temperatures.
Cheers
David
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The best reason to go for resistors that I can think of David is for small items like eyepiece and finder scope heaters. To get the resistance high enough for these small lenses would require a long length of nichrome wire (unless you have ready access to a supply of a range of wire sizes!). A long wire around something small can be a problem.
Once you get up to reasonable scope sizes, I say nichrome is the way to go. Nice and neat and tidy! But if anyone wants to build a resistor heater for their scope, they can do that too.
Al.