The Universal Astro USB Dew Heater prevents condensation by warming up the lens on your telescope. This is a high-output model suitable for cold and highly humid environments. It has been tested in the outdoors when the temperature drops below 32 degrees Fahrenheit and has proven to function properly at 5 degrees Fahrenheit.
This dew heater is designed for use with telescopes, camera lenses, and eyepieces with an outer diameter (diameter of the telescope tube/dew shield) of 80 to 120mm, or roughly 2-4" in aperture.
- Convenient USB port design. Connect the dew heater to a power source with a USB port, such as a 5V power bank, ASIAIR, car charger, laptop, desktop computer, etc.
- High, medium, and low heating modes.