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AstroAJ,
Don't breathe on the eyepieces and try not to let your wet, warm, eye get too close. I often remove the rubber eyecups in the winter so more air circulates between the eye and the lens.
Exhale through the corner of your mouth away from the eyepiece, blowing the breathe away from the eyepiece as you exhale. Sometimes it helps to rotate your head so the exhalation is above the eyepiece (warm air drifts up, you see).
And definitely leave any/all eyepiece surfaces capped until use. Otherwise, dew will condense on the cold glass.
Once dew forms, use an ear syringe to blow the dew away from the eye lens.
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