The PrimaLuceLab Dew Heater Straps are designed to help prevent condensation from forming on telescope optics during cold or humid observing and imaging sessions. They gently warm the optical tube area, helping to keep your optics clear when dew would otherwise start spoiling the view or softening your images.

Key features

Helps prevent dew formation: ideal for refractors, SCTs, guide scopes, finder scopes, camera lenses, and other front-element optical systems.
12 V powered: suitable for typical astronomy and astrophotography power setups.
RCA connector: can be connected to a PrimaLuceLab EAGLE or compatible 12 V dew controller output.
Easy installation: elastic fit with Velcro fastening makes it simple to secure around the telescope tube.
Multiple diameter options: choose the strap size that best matches your telescope or lens diameter.

Choosing the correct size

Select the diameter option that matches the outside diameter of the telescope tube, lens, or optical accessory where the dew heater will be installed. The listed size refers to the telescope or tube diameter, not the physical length of the strap.

If your telescope falls between sizes, check the listed fit range for each variant. Larger straps draw more power, so make sure your dew controller or power output can safely supply the required current.

Check the specifications for your preferred variant selected for more detail on fit range and power consumption.

PrimaLuceLab

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Accessories · Dew Control

Dew heater strapsDew heater straps

Dew heater straps