Celestron Dew Heater Ring - 11"

Direct Corrector Heating: An Efficient 30-Watt Dew Solution

This ring's core advantage is its method of heat transfer. Unlike traditional heater strips that warm the telescope's metal cell and hope the heat radiates inward, the aluminum Dew Heater Ring is in direct contact with the corrector glass. This provides the most efficient heating possible, applying its 30 watts of power exactly where needed to keep your optics clear all night.

12V DC Power with Smart Control Integration

The system runs on a common 12V DC input using a 5.5mm/2.1mm barrel connector, making it compatible with most field power supplies. For maximum power efficiency, the ring features a built-in thermistor that connects to Celestron's SmartHeat Dew Controllers via a 2.5mm audio jack. This allows the controller to monitor the exact temperature of the glass and apply only the necessary power, dramatically extending battery life.

Permanent Fit for 11" Celestron SCT, EdgeHD, and RASA OTAs

Designed as a true integrated accessory, the Dew Heater Ring replaces the plastic retaining ring on Celestron 11" optical tubes manufactured in 2006 or later. With an inner diameter of 279.4mm (11"), it provides a secure, permanent fit so you never have to worry about forgetting your dew heater. The rigid aluminum frame supports both the heating circuits and the corrector lens itself.

Integrated Cable Management for Tangle-Free Operation

To prevent cable snags and dangling wires, the ring incorporates several thoughtful features. Two storage clips hold the power and thermistor jacks securely when not in use, allowing the dust cover to fit perfectly. A separate cable management clip attaches to the front cell, routing the power and thermistor cables neatly away from the optical path to prevent unwanted tugs on the connections.

Celestron Dew Heater Ring vs. Traditional Heater Bands

The primary difference lies in efficiency and integration. A traditional band wraps around the outside of the optical tube's front cell, wasting energy heating the metal housing first. The Celestron Dew Heater Ring heats the corrector glass directly for a faster response and lower power consumption.

• Heating Method: The Ring offers direct glass heating, while bands use indirect cell heating. This makes the Ring more effective in heavy dew.
• Integration: The Ring is a permanent, "set-and-forget" installation. Bands are temporary and must be wrapped around the telescope for each session, risking uneven placement or slipping.
• Smart Control: The Ring's integrated thermistor provides precise temperature data for smart controllers, a feature absent in most basic heater bands.