We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Aluminium dew heater ring for 6" Schmidt-Cassegrain, 12 V DC barrel connector

Celestron

Celestron 6" Dew Heater Ring 12W 12V DC 5.5/2.1mm

SKU CH-Q8DN-PJTRF

Prevents dew on 6" Schmidt-Cassegrain corrector lenses using a 12W 12V DC aluminium ring with 5.5/2.1mm connector

  • Prevents dew for clear views with direct corrector heating
  • 12 W draw preserves battery life on long sessions
  • Aluminum construction gives even heat and lasting durability
  • 12 V DC 5.5/2.1 mm barrel connector for secure power
  • Replaces standard retaining ring on 6″ Schmidt-Cassegrain tubes

Dew Heater for 6" SCT

The Celestron 6" Dew Heater Ring is an accessory designed specifically for 6" Schmidt-Cassegrain telescopes. It replaces the standard plastic retaining ring on the Schmidt corrector lens to prevent condensation during long observing sessions. Astronomers and astrophotographers who need consistent optical clarity in humid conditions will find this essential for uninterrupted viewing.

12W Power Draw and Aluminum Build

Operating at 12 watts on a 12V DC supply, the ring provides sufficient heat to stop dew formation without excessive energy consumption, preserving battery life in the field. Its durable aluminum construction ensures efficient heat distribution directly across the corrector glass, offering a rigid frame that withstands outdoor use while supporting the lens and cable circuitry.

Replaces Standard Plastic Retaining Ring

This heater ring upgrades the factory plastic retaining ring on compatible 6" Celestron SCT optical tubes, shifting from passive protection to active dew prevention. The jump is worth it for observers who frequently battle condensation in damp climates or during extended imaging runs where a cold corrector plate would otherwise end the session early.

Highlights

  • Prevents dew for clear views with direct corrector heating
  • 12 W draw preserves battery life on long sessions
  • Aluminum construction gives even heat and lasting durability
  • 12 V DC 5.5/2.1 mm barrel connector for secure power
  • Replaces standard retaining ring on 6″ Schmidt-Cassegrain tubes

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the 6" dew heater ring on my Schmidt-Cassegrain and what step is often missed?

Remove the existing plastic retaining ring from the corrector lens, seat the aluminum heater ring in its place, then connect the 12 V DC barrel plug (5.5/2.1 mm) to a 12 V power source; the step often missed is snapping the two storage clips over the power and thermistor jacks so they cannot pull loose during use.

What maintenance or replacement will the heater ring need later?

The aluminum frame and integrated cable circuitry are built for long-term outdoor use; no routine maintenance is required beyond checking that the barrel connector stays clean and the storage clips hold the jacks firmly.

What limit appears first during an all-night session?

The 12 W heater draws continuous current from the 12 V supply, so the practical limit is the capacity of your external battery or power pack — when that source is depleted the ring stops heating and dew can form.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.