Telescope-Dew & Moisture Protection-Celestron 6″ Dew Heater Ring

Celestron 6″ Dew Heater Ring

Celestron Dew Heater Ring designed specifically for C6 Schmidt-Cassegrain telescopes. Because they help minimize the amount of dew and moisture that gets through to the optical system, dew heater rings are critical to ideal observing and imaging performance. To install, simply substitute this ring for the retaining ring by permanently mounting it to your 6” SCT. This way you’ll never be without it. Learn more about Celestron dew solutions in our comprehensive video below!

How It Works

Replacing the plastic retaining ring on your 6″ SCT’s corrector lens with this Celestron Dew Heater Ring leads to better dew protection via more productive heating across the lens. With a solid frame made out of tough but lightweight aluminum, this dew ring is capable of supporting the corrector lens as well as any cable wiring currently in operation. While other heating bands or strips provide indirect warmth to the glass by heating the lens cell, the Celestron Dew Heater Ring averts dew formation by directly heating the lens.

In spite of an atmosphere that’s saturated with dew, you can still adequately suppress dew accumulation by plugging this ring into an external source of 12V DC power. This will supply the steady stream of power required for this endeavor. Additionally, the Celestron Dew Heater Ring contains a pair of storage clips for keeping the power and thermistor jacks fixed while the telescope is not being used. Plus, even with these clips, the Dew Heater Ring is still able to fit the telescope’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 6″ Dew Heater Ring Highlights

• Dew is kept away from your 6” Schmidt-Cassegrain via direct heat to the corrector lens supplied by this highly efficient Heater Ring.

• Permanent attachment to your current telescope provides both a stylish appearance and an accessory that’s impossible to leave at home.

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

• Construction consists of sturdy aluminum that is simultaneously lightweight and long-lasting.

• Two storage clips and a cable management clip are included for organizing your cables.