Skip to content
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.
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.
Dew-Not Heater Strip - .965" Eyepiece

Dew-Not Heater Strip - .965" Eyepiece

by Dew-Not
SKU DN001
$28.00 - $28.00
$28.00
$28.00 - $28.00
$28.00
Price Match Policy!
  • Fits .965" Eyepieces and 1" Finderscopes
  • Heater Element Length: 3.5"
  • Total Strip Length: 4.5" (11.4cm)
  • Power Requirement: 12V DC, 2.1W
  • Current Draw: 0.18 A
Only 1 left!
Qualifies for FREE Shipping in CONUS on orders over $350.
  • Description
  • FAQ
  • Specifications
  • Warranty

  • Dew-Not Heater Strip - .965" Eyepiece (DN001)

    The Dew-Not Heater Strip DN001 provides reliable dew prevention for .965" eyepieces and 1" finderscopes by delivering 2.1W of power from a standard 12V DC source. Its 4.5" total length incorporates a 3.5" thick-film heating element that draws a minimal 0.18A of current. This design ensures your small optics remain clear without localized hot spots that can degrade views.

    Thick-Film Heating: 3.5" of Uniform Warmth at 2.1W

    Unlike resistance wire heaters that can create uneven hot spots, this Dew-Not strip uses patented thick-film technology to distribute heat uniformly across its 3.5" element. This even application of its 2.1W output gently warms the optic just above the dew point, preserving image contrast without introducing tube currents or optical distortion. The result is a clear, stable view, even as humidity levels rise.

    A 4.5" Insulated Strip for .965" Eyepieces

    Engineered specifically for small optics, the DN001's 4.5" overall length provides a secure fit on .965" eyepieces and small finderscopes. The exterior is cloth-covered with foam insulation, directing heat inward toward the optical barrel for maximum efficiency. A durable Velcro closure allows for a snug, flexible fit that stays in place throughout your observing session.

    12V DC Power and 0.18A Draw for Standard Controllers

    Operating on a standard 12V DC input, the Dew-Not heater is fully compatible with common dew controller systems. Its low 0.18A current draw allows you to power multiple heaters from a single controller without overloading your field battery. The integrated power cord terminates in a standard RCA-style plug for a secure connection to your dew control hub.

  • What optics will the Dew-Not DN001 heater strip fit?

    The Dew-Not DN001 is designed for small-diameter optics. It is a perfect fit for vintage or specialized .965" eyepieces and can also be used effectively on most 1" finderscopes or small guide scopes.

    How much power does the Dew-Not .965" heater strip use?

    The heater operates on 12V DC and consumes 2.1 watts of power. This translates to a very low current draw of just 0.18 amps, making it highly efficient and easy on your portable power supply.

    Do I need a controller for the Dew-Not DN001 heater?

    Yes, a dew heater controller is required. The heater strip runs at full power if connected directly to a 12V source, which is often too much heat. A controller allows you to adjust the power output to provide just enough warmth to prevent dew, conserving battery life and protecting your optics.

    I use a classic 60mm refractor with .965" eyepieces. Will this heater work for me?

    Absolutely. The Dew-Not DN001 is the ideal choice for this setup. Its 4.5" length is perfectly sized for the small barrel of a .965" eyepiece, and its gentle 2.1W output is sufficient to keep the eyepiece clear on a humid night without introducing any heat-related image distortion in your telescope.

    What's the difference between the Dew-Not heater and cheaper wire-based heaters?

    The key difference is the heating technology. The Dew-Not DN001 uses a thick-film element that heats evenly across its entire 3.5" surface. Many cheaper alternatives use a thin resistance wire, which can create concentrated hot spots and uneven heating, potentially affecting optical performance and risking burnout.

    Can I use the 4.5" Dew-Not strip on a small guide camera lens like a 50mm?

    While this strip is designed for eyepieces, its 4.5" length could potentially wrap around the barrel of a small C-mount or M42 guide camera lens. Measure the circumference of your lens barrel; if it is close to 4.5", the Velcro closure should provide a secure fit to prevent dew from forming on the guide camera's front element.

  • MPN DN001
    Fits Optics 0.965" Eyepieces, 1" Optics
    Total Strip Length 4.5" (11.4cm)
    Heater Element Length 3.5"
    Input Voltage 12V DC
    Power Consumption 2.1 W
    Current Draw 0.18 A
  • Dew-Not Warranty