Re: [APML] Home made Dew Shield?

[Roland Roberts <roland@astrofoto.org>]

>>>>> "Mark" == Mark Kaye <mark.kaye@sympatico.ca> writes:

    >> Okay, so where do I find specs for Nichrome wire?  In particular, this
    >> supplier has wire from 0.032" to 0.040" and some specified as "soft"

    Mark> I use 34 gauge wire.  That gives about 70 ohms per metre.  I
    Mark> have a half kilo roll of the wire which will be a multi-life
    Mark> time supply of the stuff.

Thanks, I did find a couple of places that sell the stuff and have the
resistance specs listed.  I find the specs a bit confusing in that
they are listed as, for example 675 Ohms/CMF (circular mil-foot?) but
a 0.010" diameter wire was listed at 6.75 Ohms/ft.  The latter number
seems to be consistent between vendors, so that's my benchmark.

roland
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