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Actually a peltier cooler for your scope is easy, now that I think about it.
Imagine something that screws onto the SCT thread at the back of the scope, made out of solid aluminium and extending about 10cm or so inside the scope. Enough to clear through teh hole in the mirror and extend a short distance into the body of the scope.
Bolt a peltier cooler onto the part that's sticking out the end and you can cool that lump of metal so that it pulls heat out from inside the scope. This is more-or-less exactly what my prototype cooler is doing.
I see that Jaycar are selling peltier units very cheap - I bought marlow brand at about $70 each, Jaycar have some other brand for about $20. I use a PC power supply to run the cooler - it chews a lot of amps @ 12v.
Bird
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