Thousand Oaks Digital Dew Heater Strip for 3.1" to 4" Telescopes

Thousand Oaks Dew Heater Strip – For 3.1" to 4" Telescopes

Compact Dew Control for Small Refractors and Maksutovs

This Thousand Oaks dew heater strip is designed for 3.1" to 4" refractors, Maksutovs, and small catadioptrics, offering gentle, reliable warmth to prevent dew buildup on your objective lens or corrector plate. It’s an ideal choice for grab-and-go scopes, travel rigs, and guidescopes—keeping your optics clear during extended observing sessions or imaging runs.

The strip measures 1" wide by 15" long and features a Velcro®-backed surface with a built-in elastic strap and Velcro tab. This flexible mounting design allows it to grip your optical tube snugly and securely, with no need for extra hardware or tools.

A 4-foot power cord with an RCA plug connects directly to any Thousand Oaks dew controller or compatible RCA-style control unit.

Key Features:

• Perfect Fit for Small OTAs: Sized for scopes with 3.1" to 4" tube diameters

• Velcro Backing & Elastic Strap: Easy to install, adjust, and reposition—no slipping

• Slim, Flexible Design: Won’t interfere with focusers, dew shields, or mounting hardware

• RCA Connector: Plugs directly into standard dew controllers (12V DC)

• Built to Last: Durable construction for long-term field use

Power Requirements:
Draws 0.93 amps at full power. Actual current draw varies with controller setting and ambient temperature. Requires 12V DC power from a compatible dew controller.

Usage Tip:
For best results, activate the heater at the start of your observing session to prevent dew from forming. A low or medium controller setting is usually sufficient for small scopes and guide optics.

Tech Details: