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I read everything related to the 1600, including the user forum, and can only recall a couple of version one owners in the USA reporting condensation inside the sensor compartment of a 1600, and they received prompt service from ZWO. Those stick on heaters were brought out more in response to the rapidly evolving competition from late comer QHY who introduced a heated window in their version. New 1600s incorporate a new design in that area, and no further condensation problems have been reported.
My version one 1600 has never had a condensation issue, and it is used on five different scopes, open and closed tube designs of various focal lengths.
I almost bought a KAF-8300 in early 2016, glad now that i didn't.
Last edited by glend; 14-10-2017 at 03:44 PM.
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