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Bandes chauffantes et contrôlleurs

The goal of a dew heater is not warmth. It is holding the glass two or three degrees above the dew point — enough to stop condensation, little enough that you do not create tube currents that soften every image for the rest of the night. That balance is what a controller provides. David Astro carries dew heaters and controllers in Canada, in stock, with fast shipping across Canada and worldwide.

Sizing straps to aperture and budgeting power for the whole session are the two things worth getting right. Tell us your optics and your power source and we will work them out.

Filtres

CA$95.00 - CA$95.00
CA$95.00
CA$95.00 - CA$95.00
CA$95.00

Dew-Not Heater Bande chauffante - Tête binoculaire

DN017
2 en stock

Dew-Not™ est impliqué dans la conception et la fabrication d'éléments chauffants résistifs depuis plus de 30 ans. Leurs bandes chauffantes de rosé...

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CA$95.00 - CA$95.00
CA$95.00
CA$95.00 - CA$95.00
CA$95.00
CA$83.00 - CA$83.00
CA$83.00
CA$83.00 - CA$83.00
CA$83.00

Dew-Not Heater Bande chauffante - Raquette de commande

DN016
5 en stock

Dew-Not™ est impliqué dans la conception et la fabrication d'éléments chauffants résistifs depuis plus de 30 ans. Leurs bandes chauffantes de rosé...

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CA$83.00 - CA$83.00
CA$83.00
CA$83.00 - CA$83.00
CA$83.00
CA$45.00 - CA$45.00
CA$45.00
CA$45.00 - CA$45.00
CA$45.00

Dew-Not Heater Bande chauffante - Rigel Quick Fix

DNRQ

Dew-Not™ est impliqué dans la conception et la fabrication d'éléments chauffants résistifs depuis plus de 30 ans. Leurs bandes chauffantes de rosé...

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CA$45.00 - CA$45.00
CA$45.00
CA$45.00 - CA$45.00
CA$45.00
CA$60.00 - CA$60.00
CA$60.00
CA$60.00 - CA$60.00
CA$60.00

Dew-Not Heater Pare-buée chauffant pour Telrad

DN018
4 en stock

Dew-Not™ est impliqué dans la conception et la fabrication d'éléments chauffants résistifs depuis plus de 30 ans. Leurs bandes chauffantes de rosé...

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CA$60.00 - CA$60.00
CA$60.00
CA$60.00 - CA$60.00
CA$60.00
Orion Optics UK Carbon Dew Heater for 18″ ODK
CA$1,598.00 - CA$1,598.00
CA$1,598.00
CA$1,598.00 - CA$1,598.00
CA$1,598.00

Orion Optics UK Carbon Dew Heater for 18″ ODK

OOUK-TUBE-DEW-HEATER-ODK18TR-CARBON

Custom-designed for 18″ Orion Optics UK ODK Truss telescopes Lightweight and rigid carbon fiber construction Provides uniform heat to prevent dew ...

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CA$1,598.00 - CA$1,598.00
CA$1,598.00
CA$1,598.00 - CA$1,598.00
CA$1,598.00
Orion Optics UK Carbon Dew Heater for 20″ ODK
CA$2,164.00 - CA$2,164.00
CA$2,164.00
CA$2,164.00 - CA$2,164.00
CA$2,164.00

Orion Optics UK Carbon Dew Heater for 20″ ODK

OOUK-TUBE-DEW-HEATER-ODK20TR-CARBON

Custom-fit for Orion Optics UK 20" ODK Telescopes Prevents dew formation on primary mirror and corrector optics Lightweight and rigid carbon fiber...

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CA$2,164.00 - CA$2,164.00
CA$2,164.00
CA$2,164.00 - CA$2,164.00
CA$2,164.00
Orion Optics UK Carbon Dew Heater for 24″ Orion Optics UK Telescopes
CA$3,015.00 - CA$3,015.00
CA$3,015.00
CA$3,015.00 - CA$3,015.00
CA$3,015.00

Orion Optics UK Carbon Dew Heater for 24″ Orion Optics UK Telescopes

OOUK-TUBE-DEW-HEATER-ODK24TR-CARBON

Custom-fit for 24-inch Orion Optics UK ODK telescopes Rigid carbon fibre construction for uniform heat transfer Prevents dew formation on primary ...

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CA$3,015.00 - CA$3,015.00
CA$3,015.00
CA$3,015.00 - CA$3,015.00
CA$3,015.00
Orion Optics UK Carbon Dew Heater for AG10/ODK10
CA$664.00 - CA$664.00
CA$664.00
CA$664.00 - CA$664.00
CA$664.00

Orion Optics UK Carbon Dew Heater for AG10/ODK10

OOUK-TUBE-DEW-HEATER-AG10-ODK10

Custom-designed for Orion Optics UK AG10 & ODK10 telescopes Lightweight and rigid carbon fibre construction Actively prevents dew formation on...

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CA$664.00 - CA$664.00
CA$664.00
CA$664.00 - CA$664.00
CA$664.00
Orion Optics UK Carbon Dew Heater for AG12/ODK12
CA$767.00 - CA$767.00
CA$767.00
CA$767.00 - CA$767.00
CA$767.00

Orion Optics UK Carbon Dew Heater for AG12/ODK12

OOUK-TUBE-DEW-HEATER-AG12-ODK12

Custom-designed for Orion Optics UK AG12 and ODK12 astrographs Lightweight, rigid carbon fibre construction Provides even heat distribution to pre...

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CA$767.00 - CA$767.00
CA$767.00
CA$767.00 - CA$767.00
CA$767.00
Orion Optics UK Carbon Dew Heater for AG14/ODK14
CA$871.00 - CA$871.00
CA$871.00
CA$971.00
CA$971.00 - CA$971.00
CA$971.00

Orion Optics UK Carbon Dew Heater for AG14/ODK14

OOUK-TUBE-DEW-HEATER-AG14-ODK14

Custom-fit for Orion Optics UK AG14 and ODK14 astrographs Rigid carbon fiber construction for durability and efficiency Ensures uniform heat distr...

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CA$871.00 - CA$871.00
CA$871.00
CA$971.00
CA$971.00 - CA$971.00
CA$971.00
Orion Optics UK Carbon Dew Heater for AG16/ODK16
CA$974.00 - CA$974.00
CA$974.00
CA$974.00 - CA$974.00
CA$974.00

Orion Optics UK Carbon Dew Heater for AG16/ODK16

OOUK-TUBE-DEW-HEATER-AG16-ODK16

Custom designed for Orion Optics UK AG16 and ODK16 astrographs Lightweight, rigid carbon fiber construction Provides even, gentle heat to prevent ...

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CA$974.00 - CA$974.00
CA$974.00
CA$974.00 - CA$974.00
CA$974.00
Orion Optics UK Dew Heater for 10" Orion Optics UK Secondary Mirrors
CA$809.00 - CA$809.00
CA$809.00
CA$809.00 - CA$809.00
CA$809.00

Orion Optics UK Dew Heater for 10" Orion Optics UK Secondary Mirrors

OOUK-SECONDARY-DEW-HEATER-AG10-ODK10

Custom-designed for 10" Orion Optics UK AG10 & ODK10 telescopes Prevents dew formation on the secondary mirror Maintains maximum image contras...

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CA$809.00 - CA$809.00
CA$809.00
CA$809.00 - CA$809.00
CA$809.00
Orion Optics UK Dew Heater for 18" Secondary (ODK18Tr)
CA$1,960.00 - CA$1,960.00
CA$1,960.00
CA$1,960.00 - CA$1,960.00
CA$1,960.00

Orion Optics UK Dew Heater for 18" Secondary (ODK18Tr)

OOUK-SECONDARY-DEW-HEATER-ODK18TR-CARBON

Custom-designed for the Orion Optics UK 18" ODK secondary mirror Provides active heating to prevent dew formation Lightweight carbon fibre constru...

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CA$1,960.00 - CA$1,960.00
CA$1,960.00
CA$1,960.00 - CA$1,960.00
CA$1,960.00
Orion Optics UK Dew Heater for Sec. 12″
CA$1,001.00 - CA$1,001.00
CA$1,001.00
CA$1,101.00
CA$1,101.00 - CA$1,101.00
CA$1,101.00

Orion Optics UK Dew Heater for Sec. 12″

OOUK-SECONDARY-DEW-HEATER-AG12-ODK12

Custom-fit for 12" Orion Optics UK telescopes Specifically designed for AG12 and ODK12 models Actively prevents dew formation on the secondary mir...

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CA$1,001.00 - CA$1,001.00
CA$1,001.00
CA$1,101.00
CA$1,101.00 - CA$1,101.00
CA$1,101.00
Orion Optics UK Dew Heater for Sec. 14″
CA$1,193.00 - CA$1,193.00
CA$1,193.00
CA$1,193.00 - CA$1,193.00
CA$1,193.00

Orion Optics UK Dew Heater for Sec. 14″

OOUK-SECONDARY-DEW-HEATER-AG14-ODK14

Custom-designed for 14" Orion Optics UK secondary mirrors Prevents dew formation on the secondary optical surface Ensures maximum image contrast a...

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CA$1,193.00 - CA$1,193.00
CA$1,193.00
CA$1,193.00 - CA$1,193.00
CA$1,193.00
Orion Optics UK Dew Heater for Sec. 16″
CA$1,385.00 - CA$1,385.00
CA$1,385.00
CA$1,385.00 - CA$1,385.00
CA$1,385.00

Orion Optics UK Dew Heater for Sec. 16″

OOUK-SECONDARY-DEW-HEATER-AG16-ODK16

Prevents dew formation on secondary mirrors Custom-designed for 16-inch Orion Optics UK telescopes Essential for all-night imaging and observing s...

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CA$1,385.00 - CA$1,385.00
CA$1,385.00
CA$1,385.00 - CA$1,385.00
CA$1,385.00
Orion Optics UK Dew Heater for Sec. 20″
CA$2,152.00 - CA$2,152.00
CA$2,152.00
CA$2,252.00
CA$2,252.00 - CA$2,252.00
CA$2,252.00

Orion Optics UK Dew Heater for Sec. 20″

OOUK-SECONDARY-DEW-HEATER-ODK20TR-CARBON

Custom-designed for the Orion Optics UK 20-inch ODK secondary mirror Prevents dew formation to maintain maximum image contrast Lightweight carbon ...

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CA$2,152.00 - CA$2,152.00
CA$2,152.00
CA$2,252.00
CA$2,252.00 - CA$2,252.00
CA$2,252.00
Orion Optics UK Dew Heater for Sec. 24″
CA$2,344.00 - CA$2,344.00
CA$2,344.00
CA$2,344.00 - CA$2,344.00
CA$2,344.00

Orion Optics UK Dew Heater for Sec. 24″

OOUK-SECONDARY-DEW-HEATER-ODK24TR-CARBON

Custom-fit for the Orion Optics UK 24" ODK secondary mirror Prevents dew formation to maintain image contrast and brightness Constructed from ligh...

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CA$2,344.00 - CA$2,344.00
CA$2,344.00
CA$2,344.00 - CA$2,344.00
CA$2,344.00
Épuisé
CA$301.00 - CA$301.00
CA$301.00
CA$301.00 - CA$301.00
CA$301.00

Pegasus DewMaster - Contrôleur de Buée Numérique 5 Canaux

PEG-DEWMSTR

DewMaster a été conçu pour l'astronome visuel. Connectez jusqu'à cinq réchauffeurs de rosée et contrôlez-les individuellement à l'aide du cycle d...

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CA$301.00 - CA$301.00
CA$301.00
CA$301.00 - CA$301.00
CA$301.00
Épuisé
CA$340.00 - CA$340.00
CA$340.00
CA$340.00 - CA$340.00
CA$340.00

Pegasus DewMaster2 - 5 Channel Digital Dew Heater Controller

PEG-DEWMSTR2

Controls five independent dew heater channels Automated dew prevention using included environmental sensor WiFi and USB-C connectivity for remote ...

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CA$340.00 - CA$340.00
CA$340.00
CA$340.00 - CA$340.00
CA$340.00
CA$133.00 - CA$133.00
CA$133.00
CA$133.00 - CA$133.00
CA$133.00

Pegasus DewZap - Contrôleur de Buée Deux Canaux

PEG-DEWZAP
2 en stock

DewZap est notre contrôleur de chauffage de rosée à double canal. Simple à utiliser, puissant et très compact c'est votre meilleur compagnon contr...

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CA$133.00 - CA$133.00
CA$133.00
CA$133.00 - CA$133.00
CA$133.00
CA$35.00 - CA$35.00
CA$35.00
CA$35.00 - CA$35.00
CA$35.00

Pegasus Capteur de Température/Humidité Numérique Haute Précision pour DewMaster

PEG-SENS-DEWMSTR

Capteur externe calibré de température et d'humidité relative haute résolution d'un (1) mètre. Connaissez exactement les conditions environnementa...

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CA$35.00 - CA$35.00
CA$35.00
CA$35.00 - CA$35.00
CA$35.00
CA$83.00 - CA$83.00
CA$83.00
CA$83.00 - CA$83.00
CA$83.00

PrimaLuceLab Dew Heater pour télescopes de 100 mm de diamètre

PLL-PLLFAS100
4 en stock

Le réchauffeur de rosée est placé sur le tube optique pour empêcher la rosée de l'optique. Un problème très fréquent surtout en hiver et dans les t...

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CA$83.00 - CA$83.00
CA$83.00
CA$83.00 - CA$83.00
CA$83.00
CA$91.00 - CA$91.00
CA$91.00
CA$91.00 - CA$91.00
CA$91.00

PrimaLuceLab Dew Heater pour télescopes de 120 mm de diamètre

PLL-PLLFAS120
2 en stock

Le réchauffeur de rosée est placé sur le tube optique pour empêcher la rosée de l'optique. Un problème très fréquent surtout en hiver et dans les t...

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CA$91.00 - CA$91.00
CA$91.00
CA$91.00 - CA$91.00
CA$91.00

Heaters, Controllers and Power Budget

A heater system has three parts, and the controller is the one people most often skip and most often regret skipping.

  • Aperture-matched heater straps: Sized so the band covers the circumference near the objective or corrector, distributing gentle heat evenly rather than creating a hot spot.
  • Pulse-width controllers: Vary average power by switching rather than running continuously, typically cutting consumption substantially while holding the optic just above dew point.
  • Multi-channel controllers: Independent outputs for main optic, finder, guide scope and eyepiece, since each needs a different amount of power.
  • Temperature and humidity sensing: Controllers that measure ambient conditions and set output automatically, rather than requiring you to guess and adjust.
  • Cable and connector standards: RCA connectors dominate, and cable length affects voltage delivered to the strap; short runs and adequate gauge matter more than they appear to.
  • Power draw: A full set of heaters can rival the mount's own consumption, which must be accounted for in battery sizing for a full night.

Why Choose David Astro for Dew Heaters and Controllers

Heaters are simple; using them without degrading your images is where the advice matters.

  • Power totalled for a full night: We add heater draw to mount, camera and focuser consumption and size the supply for the length of session you actually run.
  • Controller strongly recommended: Unregulated heaters waste power and can introduce tube currents that soften detail. We treat a controller as part of the system, not an upsell.
  • Channels planned: We count your optics — main scope, guide scope, finder, eyepieces — so you do not buy a single-channel controller and immediately need a second.
  • Authorized dealer: Genuine products with manufacturer warranty, held in Canadian stock.
  • Domestic shipping: No duties or brokerage fees for Canadian buyers.

Dew Heaters in Canada — Frequently Asked Questions

Can a dew heater hurt image quality?
Yes, if run too hot. Excess heat creates convection currents inside the tube that blur detail. A controller set to hold the optic just above dew point avoids this entirely.
How many channels do I need?
One per optic that dews, which for a typical imaging rig means main scope, guide scope and sometimes the camera window — three or four channels is common.
Where should the strap sit?
Just behind the objective or corrector, on the tube rather than over the glass. Placing it too far back means the heat never reaches the surface that is actually radiating.
Will a heater drain my battery?
A regulated system uses far less than an unregulated one, but heaters remain a significant load. Budget for them separately when sizing a battery for an all-night session.

Sizing a dew system?

Tell us your optics and power source and we will specify straps, channels and a controller. Canadian stock, worldwide shipping.