Celestron 8" Dew Heater Ring

Celestron 8" Dew Heater Ring

Solve all issues related to dew and moisture with this Celestron Dew Heater Ring for heating C8 Schmidt-Cassegrain, EdgeHD, and RASA telescope corrector lenses. Celestron Dew Heater Rings are essential to enhancing your night sky viewing or imaging experience at any time of the year. Installation is a snap and requires only that the retaining ring be permanently replaced with this ring so that it’ll always be there when you need it. Learn more about Celestron dew solutions in our comprehensive video below!

How It Works

The Celestron Dew Heater Ring replaces the retaining ring on your 8" Schmidt-Cassegrain corrector lens for efficient heating across the lens. This ring is constructed of lightweight, durable aluminum. Its rigid frame supports the cable circuity and the telescope's corrector lens. Unlike other heating bands or strips that inefficiently heat the lens cell to warm the glass, the Celestron Dew Heater Ring heats the corrector glass directly, providing the most efficient transfer of heat to prevent dew formation.

For the constant heat necessary to avoid dew buildup in extremely damp environments, just plug the Dew Heater Ring into an independent 12V DC power source. Even with the power and thermistor jacks kept secure between uses by this ring's two storage clips, it is also able to conform to the optical tube's dust cover.

Together with the two storage clips, the Dew Heater Ring also features a cable management clip that allows you to confine the power and thermistor jack to keep them from dangling through a connection to the telescope's front cell. Unwanted pulls on the cable connection to the rings are also minimized with this clip.

Enhance Your Setup

To achieve the highest level of dew prevention while maximizing power efficiency, Celestron strongly recommends pairing the Dew Heater Ring with a Smart DewHeater Controller (sold separately). The controller uses the ring's built-in thermistor and its internal environmental sensor to provide just the right amount of heat to the corrector to prevent dew based upon the ambient temperature, ambient humidity, and temperature of the Schmidt corrector, which can dramatically reduce the ring’s power draw, greatly increasing battery life. The ring also includes an extension cable for connecting the ring directly to one of the controllers’ heater output ports, or to a third-party controller’s heater output port. (Note: the ring’s integrated thermistor is only compatible with the Celestron Smart DewHeater Controllers).

Celestron also recommends adding a dew shield to your setup. While not mandatory, a shield will cut down on the amount of power the Dew Heater Ring needs to keep the optics clear.

Celestron 8" Dew Heater Ring Highlights

• The Celestron Dew Heater Ring provides the most efficient heating directly to the corrector lens of your C8 Schmidt-Cassegrain to prevent the formation of dew.

• Seamlessly mounts to your current optical tube in an enduring fashion for a smooth looking system-plus you can assured that it will never leave your side.

• Corrector lens temperature will be monitored constantly via the built-in thermistor once paired with a Celestron Smart DewHeater Controller.

• Features rigid, lightweight, and durable aluminum construction.

• Comes with storage and cable management clips for simplified cable organization.