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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.
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator
Wanderer Astro Dew Terminator

Wanderer Astro Dew Terminator

by Wanderer Astro
SKU WA-WDT
$189.00 - $189.00
$189.00
$189.00 - $189.00
$189.00
Price Match Policy!
  • Intelligent closed-loop dew control
  • Calculates ambient dew point from temperature and humidity
  • Multiple, independently configurable PWM output ports
  • Dual-mode operation: Dew Heater or DC Power Switch
  • Full control via ASCOM driver
  • Compact, lightweight design under 100g
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Wanderer Dew Terminator

    The Wanderer Dew Terminator replaces guesswork with a scientific, closed-loop solution to dew prevention. By continuously monitoring ambient temperature and humidity to calculate the precise dew point, it applies only the necessary power to your heaters, keeping optics clear without wasting energy or introducing image-degrading heat. This intelligent controller also doubles as a configurable DC power hub, simplifying cable management for your entire imaging rig.

    Intelligent Dew Control: Closed-Loop Dew Point Management

    Forget manual adjustments. The Wanderer Dew Terminator uses a dedicated ambient sensor to calculate the dew point in real-time and separate probes to monitor the temperature of your dew heaters. This closed-loop system ensures your heaters run at the optimal temperature—just above the dew point—preventing moisture from forming while avoiding the excess heat that can cause tube currents and harm your image quality.

    Flexible Power Hub: Configurable Heater and DC Switch Ports

    Beyond dew control, the Dew Terminator acts as a versatile power distribution hub. Through its ASCOM driver, you can independently configure each of the multiple PWM output ports to one of two modes. Set them to "Dew Heater" for fine-grained power adjustment, or change them to "Switch" mode to function as simple on/off DC outputs for powering your camera, electronic focuser, or other accessories.

    Compact Integration: Lightweight Design with ASCOM Control

    Engineered to add minimal weight and complexity to your setup, the Wanderer Dew Terminator is exceptionally compact and weighs less than 100g. It can be securely mounted to a dovetail slot using the optional Mini Dovetail Plate or attached directly to any surface with available screw holes. Full integration with your imaging software is managed through a dedicated ASCOM driver, allowing for seamless remote operation.

  • How does the Wanderer Dew Terminator prevent dew more efficiently than a manual controller?

    Instead of applying a constant, user-set power level, the Wanderer Dew Terminator uses a closed-loop system. It measures ambient temperature and humidity to calculate the exact dew point and only supplies enough power to keep your optics slightly warmer. This prevents overheating, minimizes power consumption, and avoids introducing heat plumes that can degrade image sharpness.

    Can I use the Wanderer Dew Terminator to power my astronomy camera?

    Yes. Any of the PWM ports can be set to "Switch" mode via the ASCOM driver. In this mode, the port functions as a standard DC power output, allowing you to turn connected devices like cameras, filter wheels, or electronic focusers on and off through software.

    What software do I need to control the Wanderer Dew Terminator?

    The Wanderer Dew Terminator is controlled via its dedicated ASCOM driver. This allows it to integrate with most popular astronomy imaging and observatory control software that supports the ASCOM platform, such as N.I.N.A., Sequence Generator Pro, or Maxim DL.

    How would I set up the Wanderer Dew Terminator for my Celestron 8" SCT with a guide scope?

    A typical setup would involve two dew heater straps. You would connect the heater for your 8" SCT to one port and the heater for your guide scope to another. In the ASCOM driver, you would configure both of these ports to "Dew Heater" mode. If you have a third port available, you could set it to "Switch" mode to power your cooled camera or another accessory.

    What are the mounting options for the Wanderer Dew Terminator?

    The device is designed for flexible mounting. You can attach it to a standard Vixen or Losmandy-style dovetail bar using an optional Mini Dovetail Plate adapter, or you can use screws to fix it directly to a mounting plate or other structural part of your telescope rig.

    When imaging the Horsehead Nebula (Barnard 33) on a damp night, how does this device protect my optics?

    For a long-exposure target like the Horsehead Nebula, maintaining stable optics is critical. The Wanderer Dew Terminator will gently warm your main lens or mirror just enough to stay above the calculated dew point. This automatic, minimal power application prevents the formation of dew throughout the night without creating disruptive air currents in front of your optics, ensuring your long-exposure images remain sharp.

  • Wanderer Astro 2-Year Warranty