Focus Scientific

Kendrick Firefly Energy Saver Dew Heater Strip for 3\" optics

Kendrick's new FireFly heaters are designed for the astronomer who requires a dew prevention system that is both economical in price and power.

Simply wrap the heater strip around your optic, fuzzy-side out. The integrated Velcro strip will hold the heater snug around your optic.

Firefly heater strips have lower power requirements than the Premier heater line. Firefly heaters will extend the life of your battery between charges. Using a different heater technology but operating under the same principle as the Premier line of heaters, these heaters will mildly disperse heat into your optics without compromising the figure of your telescope or camera optics.

If your observing site hits temperatures that approach freezing on the nights you like to observe, you should consider the Premier line of full-strength heaters.

Product requires a dew controller to cycle the energy through the heater (sold separately).

Not exactly as shown. Product shown is the 2" version.


  • 3" heater
  • Fits tubes with outside diameter: 3.5" to 5" (90mm to 130mm)
  • Voltage: 12v
  • Amperage: 0.5A
  • Power: 6W
  • Made in Canada
  • One year limited warranty

Browse our website for other heaters in this series.