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Heaters Paul.. Heaters... I'd wrap a heater around the secondary baffle, yes it will create a little turbulence in the optical path, but lets face it, people take stunning images with RCOS scopes, they have a heater built into the secondary.. As for the primary, if you added a dew shield as well, you could safely assume that the heat rising out of the dew shield would stop the ingress of dew on to the primary... Failing that, perhaps fans? Not that you particularly want to be pulling it all apart again...
Yeah.. I really fluked the collimation on my one when I had it.. took all of 5 minutes, did it all by eye and the shots came out razor sharp...
In any case, you have to be pretty damn close to capture the detail you have in this shot.
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