Product Description Extra Big Dew Heater Strip – Enhanced Protection for Large Telescopes by R-Sky Built for serious astronomers and astrophotographers, the Extra Big Dew Heater Strip by R-Sky delivers powerful, consistent heat to keep your large-aperture telescope clear from dew and condensation. Designed for optical tubes from 7” to 16”, this premium heater ensures your observing sessions remain uninterrupted, even in cold or high-humidity conditions. Each unit is hand-assembled using high-quality materials and features even heat distribution across the entire surface. Whether you're observing visually or capturing long-exposure images, this heater keeps your optics dry, sharp, and ready for the night sky. Available in multiple sizes for telescopes with apertures between 7” and 16”. ⸻ Key Features: 🔥 Enhanced Heating Performance – Effective even in extreme humidity and cold. 🔁 Even Heat Distribution – Prevents fogging without overheating. 🔌 12V RCA Compatibility – Works with most dew heater controllers and power supplies. 🧵 Flexible, Tangle-Free Cable – Remains soft and manageable, even in freezing weather. 🤲 Hand-Assembled by R-Sky – Built with attention to detail for long-lasting performance. 📏 Standard Cord Length – 47 inches (120 cm) Use with a Dew Controller (Recommended): For precise power control and longer battery life, pair this heater with a compatible dew controller. Stay focused on the stars — not the dew. Choose R-Sky's Extra Big Dew Heater Strip for powerful, worry-free protection of your telescope's optics.