AstroZap 4吋望遠鏡用防露加熱帶 - AZ-704

Finally, no more fogging on my eyepiece mid-observation. The even heat across the entire band is a game-changer for keeping the lens clear on humid nights.

Fits snugly around my 4-inch scope and the heat distribution seems really even—no more fogged eyepieces on damp nights. Had it running for three hours straight and it did the job without getting too hot to touch.

I was worried about fogging up after a few hours outside, but this band keeps the lens perfectly clear even in damp air. The heat spreads uniformly across the whole band, which makes a real difference.