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ZWO 294 dew issues?

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I bought a ZWO 294mc cooled camera a year ago and have had some really fun times with it. The other day I noticed though that when I cooled it and took a photo there was what looked like some dew or something on the sensor.  Some images to confirm, 2 flat frames, one at 24C and another at -10C, and 1 image of thors helmet -10C. Is there a desiccant tablet that needs to be replaced, just cleaning? Any help is appreciated.

-10 C.jpg

24 C.jpg

thor' Helmet 120s -10 C.jpg

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