Dew heater for guidescope
I have just upgraded my scope (Celestron 6" SCT to a WO Zenithstar 81 refractor) and have purchased a guide scope to replace the OAG. I have a dew heater for the main scope but I'm having trouble finding one small enough (10 cm) for the guide scope. I presume I will need one as the cooler months approach but I can't seem to find any of that approximate size... any suggestions?
Also, on another forum, it was suggested that an extended dew shield made from a cardboard roll would replace the need for a heater on the guide scope. Does anyone here use that solution with success?
Any other hints or tips?
Frank
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