Observing with large-aperture telescopes in humid climates can quickly become frustrating when dew builds up despite standard heaters. The Extra Big Dew Heater by R-Sky is specially designed for telescopes with 14 to 16-inch optical tubes, delivering the power needed for serious protection against condensation. Built to meet the demands of professional observatories and advanced amateur astronomers, this heater ensures even, reliable heating across wide corrector plates or meniscus lenses. 📌 Recommended for optical tubes with a diameter of approximately 355–406 mm. ⸻ ✅ Key Features: 🔥 High Heating Output – Handles severe dew conditions effortlessly 🔄 Uniform Heating Surface – Prevents cold spots or overheating 🔌 Standard RCA Plug (12V) – Compatible with most dew controllers 🧵 Soft, 47-inch Cord – Flexible and durable even in cold conditions 🛠 Handcrafted in-house – R-Sky quality with tested performance ⸻ ✅ Use with a Controller (Recommended): For optimal battery use and performance, pair with a dew controller to regulate output power and protect your telescope's optics during long sessions.