Dew Zapper Options

[thunderchildobs]

I have a Canon 550D with a widefield 10-18mm lens.
I am looking for dew zapper options where I cannot get access to mains or 12v battery power. This is for an overseas trip, so the option must be very light and transportable. (No car batteries) Suggestions?

Brendan

[glend]

You can get chemical handwarmer packs, just break the seal and shake it and it will generate heat for a couple of hours. You could strap that to a lense easily. I used them skiing in Canada, and you can usually find them in ski gear stores here.

[Phil Hart]

I've written a blog post about what I do:

http://philhart.com/content/dew-heaters-night-sky-photography

Phil