I have no filters in front of the sensor so that's handled I guess. I was considering using a clip in ha filter... Is it likely that the clip filter would condensate? If so I wonder how I would control that. It would be hard to heat that... I might be able to use the drop in filter on my lens fr a 36mm ha filter but that might only move the problem into a trickier spot.
Possibly if I heat the rear end of the lens body to add warmth to those internal elements.
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