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July 1st: Store will be closed for Canada Day. Orders placed that day will ship on July 2nd.
Celestron Dew Heater Ring - 6"
Celestron Dew Heater Ring - 6"
Celestron Dew Heater Ring - 6"
Celestron Dew Heater Ring - 6"
Celestron Dew Heater Ring - 6"

Celestron Dew Heater Ring - 6"

by Celestron
SKU CEL-94050
CA$64.00 - CA$64.00
CA$64.00
CA$64.00 - CA$64.00
CA$64.00
Price Match Policy!
  • Maintains clear optics on your 6" Schmidt-Cassegrain
  • Delivers up to 12 watts of direct heating power
  • Durable aluminum ring with a 153.4mm inner diameter for a perfect fit
  • Integrated 2.5mm thermistor jack for smart control
  • Powered by a standard 12V DC, 5.5mm/2.1mm barrel connector
4 in stock
Qualifies for FREE Shipping in Canada on orders over $500.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Celestron Dew Heater Ring - 6"

    The Celestron Dew Heater Ring for 6" Schmidt-Cassegrains provides up to 12 watts of power directly to your corrector plate for efficient dew prevention. Its lightweight aluminum construction weighs just 2.19 oz (62.2 g) and features a precise 153.4mm inner diameter that replaces the telescope's stock retaining ring. Power is delivered via a standard 12V DC barrel connector, and an integrated 2.5mm audio jack allows for intelligent temperature control with Celestron SmartHeat controllers.

    Direct Corrector Heating at 12 Watts

    Unlike conventional heater strips that warm the telescope's metal cell, the Celestron Dew Heater Ring's circuit is in direct contact with the glass. This method is far more efficient, applying its 12 watts of heating power to the corrector plate to keep the surface just above the dew point. This direct heating approach consumes less power and responds faster to changing conditions, ensuring a clear field of view throughout your session.

    153.4mm Anodized Aluminum Ring: A Permanent Solution

    Engineered for a perfect fit, the ring's 153.4mm inner diameter and 176mm outer diameter allow it to permanently replace the plastic retaining ring on a 6" SCT. This integrated design means you never have to worry about forgetting your dew heater or dealing with cumbersome straps. The rigid aluminum frame not only houses the heating element but also safely supports the Schmidt corrector lens, all while adding a minimal 2.19 oz to your optical tube.

    • Built-in Cable Management: Two storage clips secure the power and thermistor jacks when not in use, allowing the dust cover to fit perfectly.
    • Secure Connection: An included clip corrals the power cables, preventing snags or accidental disconnection during operation.

    12V DC Power and Smart Controller Integration

    The ring operates on a standard 12V DC input using a 5.5mm/2.1mm barrel connector, making it compatible with most field batteries. For maximum efficiency, the built-in thermistor connects to Celestron's SmartHeat Dew Controllers via a 2.5mm audio jack. This allows the controller to monitor the corrector's exact temperature and apply power only when needed, significantly extending battery life compared to a constantly-on system.

    • Flexible Power Options: A 6" extension cable is included, terminating in a male RCA connector for compatibility with various third-party controllers.
    • Thermistor Compatibility: While the power input is universal, the integrated thermistor is designed specifically for the Celestron SmartHeat Controller ecosystem.

  • How much power does the 6" Dew Heater Ring use?

    The ring has a maximum power draw of 12 watts. When connected to a Celestron SmartHeat Dew Controller, the actual power consumption is often much lower, as the controller only applies heat when the built-in thermistor detects a risk of dew formation.

    Will the Celestron Dew Heater Ring fit my non-Celestron 6" SCT?

    This ring is specifically designed to replace the retaining ring on Celestron 6" Schmidt-Cassegrain telescopes, with an inner diameter of 153.4mm (6.04"). Compatibility with other brands is not guaranteed, as their corrector cell dimensions may differ.

    Can I use the thermistor with a third-party dew controller?

    No, the integrated thermistor is only compatible with Celestron SmartHeat Dew Controllers. However, you can still power the heating element with a third-party controller using the included power jack extension cable; you just won't have the benefit of the temperature feedback.

    Is installing the 6" Dew Heater Ring difficult?

    The installation is straightforward and involves carefully unscrewing the existing retaining ring on your 6" SCT and replacing it with the Dew Heater Ring. A paper installation shield is included to protect the corrector lens during the process. Always follow the detailed instructions in the user manual.

    What kind of power supply do I need for the Celestron Dew Heater Ring?

    You will need an external 12V DC power source, such as a portable battery pack or AC adapter, that can supply power through a 5.5mm/2.1mm barrel connector (tip positive). The ring itself draws a maximum of 12 watts.

    For a night of imaging M27, the Dumbbell Nebula, do I still need a dew shield with this ring?

    While not mandatory, using a dew shield is highly recommended. The shield reduces the corrector's exposure to the cold night sky, which in turn lessens the amount of power the Dew Heater Ring needs to use to prevent dew. This improves power efficiency and extends your battery life during a long imaging session on targets like M27.

  • Compatibility 6" Schmidt-Cassegrain
    Max Power 12 watts
    Power Jack 12V DC barrel connector, 5.5mm/2.1mm, tip positive
    Thermistor Jack 2.5mm audio jack
    Ring Construction Aluminum
    Inner Diameter 153.4mm (6.04")
    Outer Diameter 176mm (6.93")
    Weight 2.19 oz (62.2 g)
    Power Jack Extension Cable 6" long, 12V DC, 5.5mm/2.1mm to male RCA connector, tip positive
    • Celestron Dew Heater Ring for 6-inch SCT

      Dew Heater Ring - 6"

      × 1

    • Cable Management Clip

      Cable Management Clip

      × 1

    • Power Jack Extension Cable

      Power Jack Extension Cable

      × 1

    • Paper Installation Shield

      Paper Installation Shield

      × 1

  • Celestron 2-Year Warranty