Two nights ago I was camping in a bottom beside a river. About 10:00pm I noticed more moisture all over me and my guide scope than I’ve ever encountered before. Guess it’s time to get something to handle this. I’ve seen the zappers and dew nots and what nots advertised but what are you recommending to me based on your experiences? My budget is not carte blanc, keep me middle price range please. My telescope is a 150 mm Mak-Newton, the guide scope is a 60 mm Solomark and the finder scope is an 8x50 RACI.