Don't let dew or frost cut your observing session short. The SVBONY SV172 240mm Dew Heater Strip is an essential accessory for astronomers and astrophotographers, designed to gently warm your telescope objective, guide scope, camera lens, or other optical equipment to prevent moisture from forming during cold or humid nights.
Powered by any standard 5V USB power source, the SV172 features a convenient 3-level temperature controller, allowing you to select the ideal heating level depending on observing conditions. Its wide 50mm heating band distributes heat evenly across the optical surface, while the premium multi-layer insulated construction minimizes heat loss and maximizes efficiency.
Whether you're enjoying visual observations or capturing long-exposure astrophotography images, the SV172 helps keep your optics dry, ensuring sharp, uninterrupted views throughout the night.
Note: A 5V USB power source (power bank or USB adapter) is required for operation and is sold separately.