Try cheeseclothe instead of felt.



Canopus wrote:

david johanson wrote in message ...
snip My question: Should I do anything special to the scope and
eyepieces
when I bring them into the house?

Not the best solution, but what I do for eyepieces when observing in
mountains of Intermountain West at 20-30 degrees, where the dew
freezes as an ice layer on lenses, is the following:

1) A piece of heavy felt to cover the lens box.
2) A $12 el-cheapo automobile heater/fan - the kind you plug into a
cigarette lighter. Buy at any chain auto parts store.
3) A portable car restarter battery with 12V cigarette lighter power
ports built-in. Buy at any chain auto parts store.

I leave the felt over the lens box and ontop of the heater/blower,
generally keeping the heater/blower on "fan" only. The slight breeze
keeps the dew/ice from forming. It reduces the amount of moisture that
condenses on the lenses as I drive down the mountain to lower and
warmer altitudes. It's a simple matter to reach under or flip-up the
felt cloth to replace and retrieve lenses.

Not prefect, but the best I have come up with to date. One drawback is
the annoying noise that the el-cheap heater/blower makes.

- Canopus