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Aluminum dew heater ring for 8 inch Schmidt-Cassegrain EdgeHD RASA telescope

Celestron

Celestron Dew Heater Ring Aluminum 8 Schmidt-Cassegrain EdgeHD RASA

SKU CH-M0D6-XWJV4

Lightweight aluminium ring replaces the retaining ring on 8″ Schmidt-Cassegrain EdgeHD and RASA tubes, delivering continuous 12 V heat to stop dew forming on the corrector plate

  • Prevents dew on corrector plate with custom-fit 8" ring
  • Lightweight aluminum construction adds only .70 lb to telescope
  • Powers from any 12 V DC source for continuous heat
  • Integrated clips secure power and thermistor jacks during use
  • Cable-management clip attaches to front cell to reduce cable strain

Dew Heater Ring for 8 Schmidt-Cassegrain Telescopes

The Celestron Dew Heater Ring is an aluminium accessory designed to prevent dew from forming on the corrector plate of compatible 8-inch Schmidt-Cassegrain EdgeHD and RASA optical tubes. It permanently replaces the factory retaining ring and connects to an external 12V DC power source for continuous heating during observing or imaging sessions.

Suited for permanent dew prevention on specific

This ring suits astronomers who want a fixed, lightweight aluminium solution with integrated cable management clips and storage for power and thermistor jacks. It is not for users needing a removable dew shield, those without access to a 12V DC power supply, or owners of telescope models outside the specified EdgeHD and RASA compatibility.

Replaces the retaining ring on 8 EdgeHD

The critical specification is that this heater ring permanently replaces the existing retaining ring on the optical tube assembly. Buyers must confirm their telescope is an 8-inch Celestron Schmidt-Cassegrain EdgeHD or RASA to ensure the custom fit and correct mounting geometry required for proper operation.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $49.99
Pricier than about 55% of the 3,838 comparable items (median $41.99).

Specifications

No published specifications for this item yet.

Questions about this item

What power source must I already have to run the 12V DC dew heater ring?

You need an external 12V DC power supply; the ring plugs directly into it for continuous heat.

Will the heater ring still let me use the telescope's original dust cover?

Yes, two storage clips on the ring hold the power and thermistor jacks while accommodating the existing dust cover.

How can I confirm the ring is heating the corrector plate after I install it?

The plate should stay clear of dew during humid nights, showing the 12V DC circuit is delivering consistent heat.

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