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Black aluminum dew heater ring for 9.25 inch telescope corrector lens

Celestron

Celestron Dew Heater Ring 9.25 Aluminum Black

SKU CH-1THR-FEHEA

Prevents dew on 9.25 Schmidt-Cassegrain and EdgeHD corrector lenses with a 12 V powered aluminum ring that replaces the retaining ring and includes cable-management clips

  • Prevents dew on the Schmidt corrector lens for clear observing
  • Fits all 9.25 Schmidt-Cassegrain and EdgeHD optical tubes permanently
  • Lightweight durable aluminum construction supports the corrector lens
  • Powered by external 12V DC source for continuous heat
  • Integrated storage clips and cable clip secure power and thermistor jacks

Dew prevention ring for 9.25 telescopes

The Celestron Dew Heater Ring is an aluminium accessory designed to stop dew forming on the Schmidt corrector lens of 9.25 Schmidt-Cassegrain and EdgeHD optical tubes. It replaces the standard retaining ring and draws power from an external 12 V DC source to deliver continuous heat across the plate. Two integrated storage clips hold the power and thermistor jacks while a cable management clip attaches to the front cell. The rigid aluminium frame also supports the corrector lens during use.

Who this suits and who it does not

The ring is intended for owners of Celestron 9.25 Schmidt-Cassegrain or EdgeHD telescopes who observe or image in humid conditions and want a permanent, low-profile heating solution. It is not for users with different aperture sizes or other telescope brands, nor for anyone without access to a 12 V DC power supply. Buyers needing a removable or battery-powered dew shield should look at alternative designs.

9.25 aperture compatibility

The single specification that decides fit is the 9.25 aperture designation; the ring matches the retaining-ring dimensions of Celestron 9.25 Schmidt-Cassegrain and EdgeHD tubes only. Verify that your optical tube carries this exact aperture marking before purchase.

How it compares

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

Price $69.99
Pricier than about 65% of the 3,838 comparable items (median $41.99).

Specifications

No published specifications for this item yet.

Questions about this item

How does the 9.25 inch dew heater ring perform once installed on the telescope?

It permanently replaces the retaining ring and provides efficient heating across the Schmidt corrector plate to prevent dew formation during observing or imaging sessions.

What power interface does the 12V DC dew heater ring use and what does it limit?

The ring plugs into an external 12V DC power source for consistent continuous heat and includes a thermistor jack for temperature regulation.

What physical mounting does the 9.25 inch aluminum dew heater ring require?

It replaces the telescope's existing retaining ring on the front cell and includes a cable management clip that attaches to the front cell for secure cable routing.

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