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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
SVBONY SV172 Dew Heater Strip with PWM Function (430mm)
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function 430mm
SVBONY SV172 Dew Heater Strip with PWM Function (430mm)

SVBONY SV172 Dew Heater Strip with PWM Function 430mm

par SVBONY
UGC SV-W9132D
$17.59 - $17.59
$17.59
$17.59 - $17.59
$17.59
Égalisation de prix!
  • Length: 430mm
  • Control: Pulse Width Modulation (PWM)
  • Power-efficient design
  • Waterproof construction
  • Prevents dew and frost on optics
En rupture temporaire
Alerte de retour en stock
Info disponibilité
Admissible à la livraison GRATUITE aux USA pour les commandes de plus de 350$.
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • SVBONY SV172 Dew Heater Strip with PWM Function (430mm)

    The SVBONY SV172 Dew Heater Strip uses Pulse Width Modulation (PWM) to deliver precise, efficient heating across its full 430mm length. This 430mm strip is designed to protect larger telescope objectives, corrector plates, and camera lenses from dew formation without consuming excess power or creating image-degrading heat currents.

    PWM Control: 430mm of Efficient Dew Prevention

    Unlike basic heaters that are either fully on or off, the SV172 utilizes PWM to finely regulate its power output. This allows a compatible controller to deliver just enough energy to keep your optics slightly above the dew point, preventing both condensation and overheating. This method minimizes battery drain during long imaging sessions and avoids introducing tube currents that can soften fine details on planetary targets.

    All-Weather 430mm Build for Reliable Operation

    Constructed with high-quality, waterproof materials, the SV172 430mm Dew Heater Strip is built to withstand the damp conditions where dew is most problematic. The flexible 430mm strip wraps securely around telescope tubes and larger camera lenses, providing complete and even coverage. Its durable build ensures reliable, fog-free viewing and imaging through changing overnight temperatures.

  • What is the main advantage of the SVBONY SV172's PWM function?

    The primary advantage is energy efficiency and precise temperature control. Instead of running at 100% power, a PWM controller pulses the electricity to the SV172 strip, maintaining a stable temperature just above the dew point. This prevents overheating, reduces battery consumption, and avoids creating heat plumes that can degrade image sharpness.

    Is the 430mm length of the SV172 strip right for my telescope?

    The 430mm length is ideal for optical tubes with an outer circumference up to 430mm (approximately 135mm or 5.3" in diameter). This makes it a great fit for many 4" to 5" refractors, the corrector plate housing on 6" Schmidt-Cassegrains, or large telephoto camera lenses. To confirm, measure the circumference of your optical tube or lens where you intend to place the strip.

    Can I use the SVBONY SV172 430mm strip on my Celestron 8" SCT?

    No, the 430mm length is too short for the main optical tube or corrector plate of an 8" SCT, which typically has a circumference closer to 730mm. While it could be used on a finder scope or large eyepiece attached to the 8" SCT, you would need a longer dew heater strip for the main objective.

    Do I need a special controller to use the SV172 Dew Heater Strip?

    Yes, to take full advantage of the heater's capabilities, you should connect the SV172 to a dew controller with PWM outputs. While it may function with a simple on/off DC power source, you would lose the precise control and power-saving benefits that make PWM technology superior for dew prevention.

    How does the SV172's waterproof design help during an imaging session?

    The waterproof construction ensures the SV172 continues to operate safely and reliably even in very high humidity or if it comes into direct contact with condensation. This protects the internal heating elements from short-circuits, providing peace of mind during all-night automated imaging runs where conditions can change unpredictably.

    Can the SVBONY SV172 also prevent frost?

    Yes. Frost is simply frozen dew that forms when the surface temperature of your optics drops below freezing. By keeping the glass consistently above the dew point, the SV172 dew heater effectively prevents the formation of both dew and frost, allowing you to observe or image in cold, humid conditions.

  • SVBONY 1-Year Warranty