Astrozap Heater for Telrad Finders

AstroZap Dew Heater for Telrad Finders

Your Telrad is one of the most intuitive and widely used finderscopes in amateur astronomy—but it's also one of the first things to fog over when dew starts to form. The AstroZap Dew Heater for Telrad Finders is a compact, efficient heating solution that keeps your reticle window crystal clear, so you never lose your aim on the sky.

This low-power heater strip is custom-designed to fit neatly along the Telrad’s glass window. Once powered through a standard RCA-style connector, it gently warms the viewing area to prevent dew formation without interfering with the accuracy of the projection. It’s fully compatible with any dew controller that accepts RCA heater plugs.

Installation is quick and non-invasive—Velcro tabs or soft adhesive make it easy to secure the strip in place, and the slim design ensures it won’t get in your way during setup, teardown, or observing. Whether you're doing deep-sky work or planetary alignment, this heater helps ensure your Telrad stays as clear and ready as your optics.

Features:

• Designed specifically for the Telrad reflex sight

• Prevents dew buildup on the Telrad’s glass window

• Uses a standard RCA connector—compatible with most dew controllers

• Easy installation using Velcro or adhesive backing

• Slim, lightweight design that won’t obstruct your finder or scope

• Ideal for humid climates and extended observing sessions

Observing Tip:

On nights when your corrector plate is still dry but your Telrad is already fogged up, you’ll wish you had this heater. It’s especially handy for outreach events and star parties where you're slewing from object to object all night long—and need your finder to stay reliable from start to finish.