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Dew Heaters & Controllers

Moisture condensing on the eye lens of your eyepiece or on the front lens of your telescope (in other words, dew) can cut short an evening's observing or ruin a long exposure deep space photograph if it forms during the exposure. If enough moisture condenses, it also has the potential of getting into the optical tube or eyepiece and causing damage.

Dew heaters are low wattage 12 Volt DC electrical heater strips that wrap around the objective lens of the telescope (as well as the finderscope and eyepieces, if desired). These warm the optics above the dew point to prevent the formation of dew. Unlike dew shields, dew heaters don't merely slow the formation of dew, they prevent its formation entirely.

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  • Celestron Smart DewHeater and Power Controller 4X – front view showing ports and bridge
    $449.95 - $449.95
    $449.95
    $449.95 - $449.95
    $449.95

    Celestron Smart Dewheater Controller With Four Outputs 94036

    Celestron
    In Stock

    Celestron Smart DewHeater & Power Controller 4X Four-port, microprocessor-driven dew control and power hub for the modern observer Dew is an ol...

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    $449.95 - $449.95
    $449.95
    $449.95 - $449.95
    $449.95
  • Digital Dew Heater Strip for 7" to 8" telescopes
    $59.00 - $59.00
    $59.00
    $59.00 - $59.00
    $59.00

    Thousand Oaks Digital Dew Heater Strip for 7" to 8" Telescopes

    Thousand Oaks
    More on the way

    Thousand Oaks Dew Heater Strip – For 7" to 8" Telescopes Full-Aperture Dew Control for Mid-Sized Catadioptrics Keep your corrector plate clear all ...

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    $59.00 - $59.00
    $59.00
    $59.00 - $59.00
    $59.00
  • Flexi-Heat Dew shield for Meade 12" SCTs
    $159.50 - $159.50
    $159.50
    $159.50 - $159.50
    $159.50

    Astrozap Flexi-Heat Dew Shield for Meade 12" SCTs

    Astrozap
    In Stock

    AstroZap Flexi-Heat Dew Shield for Meade 12" SCTs Big scopes gather big light—and unfortunately, they also gather big dew. The AstroZap Flexi-Heat ...

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    $159.50 - $159.50
    $159.50
    $159.50 - $159.50
    $159.50
  • Heater strap for 9.25" scopes
    $65.78 - $65.78
    $65.78
    $65.78 - $65.78
    $65.78

    Astrozap Heater Strap for 9.25" and 10" Scopes

    Astrozap
    In Stock

    AstroZap Dew Heater Strap for 9.25" and 10" Telescopes The 9.25" and 10" Schmidt-Cassegrains are two of the most beloved telescopes in amateur astr...

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    $65.78 - $65.78
    $65.78
    $65.78 - $65.78
    $65.78
  • Flexi-Heat Dew shield for Celestron and Meade 8" SCTs
    $92.00 - $92.00
    $92.00
    $92.00 - $92.00
    $92.00

    Astrozap Flexi-Heat Dew Shield for Celestron and Meade 8" SCTs

    Astrozap
    In Stock

    AstroZap Flexi-Heat Dew Shield for Celestron & Meade 8" SCTs Whether you're running a Celestron or Meade 8" Schmidt-Cassegrain, you’re in comma...

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    $92.00 - $92.00
    $92.00
    $92.00 - $92.00
    $92.00
  • Flexi-Heat Dew shield for Meade 10" catadioptrics
    $126.00 - $126.00
    $126.00
    $126.00 - $126.00
    $126.00

    Astrozap Flexi-Heat Dew Shield for Meade 10" Catadioptrics

    Astrozap
    In Stock

    AstroZap Flexi-Heat Dew Shield for Meade 10" Catadioptrics When you're operating a Meade 10" Schmidt-Cassegrain or Schmidt-Newtonian, you're comman...

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    $126.00 - $126.00
    $126.00
    $126.00 - $126.00
    $126.00
  • Heater strap for 12" scopes
    $69.00 - $69.00
    $69.00
    $69.00 - $69.00
    $69.00

    Astrozap Heater Strap for 12" Scopes

    Astrozap
    In Stock

    AstroZap Dew Heater Strap for 12" Telescopes With a 12" optical tube, you're collecting serious starlight—but also putting a large surface area at ...

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    $69.00 - $69.00
    $69.00
    $69.00 - $69.00
    $69.00
  • Heater strap for 7" scopes
    $59.00 - $59.00
    $59.00
    $59.00 - $59.00
    $59.00

    Astrozap Heater Strap for 7" and 8" Scopes

    Astrozap
    More on the way

    AstroZap Dew Heater Strap for 7" and 8" Telescopes Telescopes in the 7" to 8" range are some of the most popular choices among backyard astronomers...

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    $59.00 - $59.00
    $59.00
    $59.00 - $59.00
    $59.00
  • Celestron, Dew Heater Ring, 6-inch SCT, Dew Control, Thermistor, Smart DewHeater Compatible, Corrector Plate Heater, 94050, Telescope Accessory
    $45.95 - $45.95
    $45.95
    $45.95 - $45.95
    $45.95

    Celestron 6" Dew Heater Ring

    Celestron
    In Stock

    Celestron 6-inch Dew Heater Ring (Part #94050) Compact, permanent dew protection for your 6″ SCT A 6-inch Schmidt-Cassegrain is the very definition...

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    $45.95 - $45.95
    $45.95
    $45.95 - $45.95
    $45.95
  • Flexi-Heat Dew shield for 5" Celestron SCTs (except NexStar 5SE) & Meade ETX-125
    $62.00 - $62.00
    $62.00
    $62.00 - $62.00
    $62.00

    Astrozap Flexi-Heat Dew Shield for 5" Celestron SCTs (Except NexStar 5SE) & Meade ETX-125

    Astrozap
    More on the way

    AstroZap Flexi-Heat Dew Shield for 5" Celestron SCTs (Excluding NexStar 5SE) & Meade ETX-125 Even mid-sized scopes need major protection from t...

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    $62.00 - $62.00
    $62.00
    $62.00 - $62.00
    $62.00
  • Flexi-Heat Dew shield for Celestron fork mount 9¼" SCTs (except GPS)
    $122.00 - $122.00
    $122.00
    $122.00 - $122.00
    $122.00

    Astrozap Flexi-Heat Dew Shield for Celestron Fork Mount 9.25" SCTs (Except GPS)

    Astrozap
    In Stock

    AstroZap Flexi-Heat Dew Shield for Celestron Fork Mount 9.25" SCTs (Excluding GPS Models) The Celestron 9.25" SCT is prized for its planetary sharp...

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    $122.00 - $122.00
    $122.00
    $122.00 - $122.00
    $122.00
  • Celestron 14-inch Dew Heater Ring – front view showing integrated power and sensor jacks
    $164.95 - $164.95
    $164.95
    $164.95 - $164.95
    $164.95

    Celestron 14" Dew Heater Ring

    Celestron
    In Stock

    Celestron 14-inch Dew Heater Ring (Part # 94054) Direct-contact, thermistor-guided dew prevention for big-aperture SCTs, EdgeHDs, and RASA 14 Ownin...

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    $164.95 - $164.95
    $164.95
    $164.95 - $164.95
    $164.95
  • Flexi-Heat Dew shield for 4" Celestron NexStar 4 and Meade ETX-105 Maksutov-Cassegrains
    $60.00 - $60.00
    $60.00
    $60.00 - $60.00
    $60.00

    Astrozap Flexi-Heat Dew Shield for 4" Celestron NexStar 4 and Meade ETX-105 Maksutov-Cassegrains

    Astrozap
    In Stock

    AstroZap Flexi-Heat Dew Shield for Celestron NexStar 4 & Meade ETX-105 Maksutov-Cassegrains Don’t let dew ground your grab-and-go mission. Whet...

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    $60.00 - $60.00
    $60.00
    $60.00 - $60.00
    $60.00
  • Flexi-Heat Dew shield for Celestron 11" SCTs
    $141.00 - $141.00
    $141.00
    $141.00 - $141.00
    $141.00

    Astrozap Flexi-Heat Dew Shield for Celestron 11" SCTs

    Astrozap
    In Stock

    AstroZap Flexi-Heat Dew Shield for Celestron 11" Schmidt-Cassegrains The Celestron 11" SCT is a beloved workhorse for serious visual observers and ...

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    $141.00 - $141.00
    $141.00
    $141.00 - $141.00
    $141.00
  • Heater strap for 0.965" eyepieces and finderscope eyepieces
    $42.00 - $42.00
    $42.00
    $42.00 - $42.00
    $42.00

    Astrozap Heater Strap for 0.965" Eyepieces and Finderscope Eyepieces

    Astrozap
    More on the way

    AstroZap Dew Heater Strap for 0.965" Eyepieces & Finderscope Eyepieces Whether you’re running a vintage scope, a finder with a traditional eyep...

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    $42.00 - $42.00
    $42.00
    $42.00 - $42.00
    $42.00
  • Flexi-Heat Dew shield for 8" Meade SN-8 LXD55/75 Schmidt-Newtonians
    $95.00 - $95.00
    $95.00
    $95.00 - $95.00
    $95.00

    Astrozap Flexi-Heat Dew Shield for 8" Meade SN-8 LXD55/75 Schmidt-Newtonians

    Astrozap
    More on the way

    AstroZap Flexi-Heat Dew Shield for Meade SN-8 LXD55 / LXD75 Schmidt-Newtonians With its wide-field, fast f/4 optics, the Meade SN-8 Schmidt-Newtoni...

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    $95.00 - $95.00
    $95.00
    $95.00 - $95.00
    $95.00
  • Flexi-Heat Dew shield for 10" Meade SN-10 LXD55/75 Schmidt-Newtonians
    $126.00 - $126.00
    $126.00
    $126.00 - $126.00
    $126.00

    Astrozap Flexi-Heat Dew Shield for 10" Meade SN-10 LXD55/75 Schmidt-Newtonians

    Astrozap
    More on the way

    AstroZap Flexi-Heat Dew Shield for Meade SN-10 LXD55 / LXD75 Schmidt-Newtonians The Meade SN-10 Schmidt-Newtonian brings together fast optics and a...

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    $126.00 - $126.00
    $126.00
    $126.00 - $126.00
    $126.00
  • Flexi-Heat Dew shield for 3.5" Celestron C-90 and Meade ETX-90
    $54.00 - $54.00
    $54.00
    $54.00 - $54.00
    $54.00

    Astrozap Flexi-Heat Dew Shield for 3.5" Celestron C-90 and Meade ETX-90

    Astrozap
    More on the way

    AstroZap Flexi-Heat Dew Shield for Celestron C90 & Meade ETX-90 Maksutov-Cassegrains Small scopes can still face big dew problems. Whether you’...

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    $54.00 - $54.00
    $54.00
    $54.00 - $54.00
    $54.00
  • AstroZap AZ-809-E Flexi-Heat heated dew shield for Celestron NexStar Evolution 9.25 SCT
    $125.00 - $125.00
    $125.00
    $125.00 - $125.00
    $125.00

    Astrozap Celestron NexStar Evolution 9.25 SCT Flexi-Heat

    Astrozap
    More on the way

    AstroZap Flexi-Heat® Heated Dew Shield – For Celestron NexStar Evolution 9.25" SCT Built-In Dew Control and Glare Protection for Your Evolution 9.2...

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    $125.00 - $125.00
    $125.00
    $125.00 - $125.00
    $125.00
  • Flexi-Heat Dew shield for Meade 16" SCTs
    $205.00 - $205.00
    $205.00
    $205.00 - $205.00
    $205.00

    Astrozap Flexi-Heat Dew Shield for Meade 16" SCTs

    Astrozap
    More on the way

    AstroZap Flexi-Heat Dew Shield for Meade 16" SCTs If you’re running a Meade 16" Schmidt-Cassegrain, you’re no stranger to serious aperture—and seri...

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    $205.00 - $205.00
    $205.00
    $205.00 - $205.00
    $205.00
  • Heater strap for 16" scopes
    $71.00 - $71.00
    $71.00
    $71.00 - $71.00
    $71.00

    Astrozap Heater Strap for 16" Scopes

    Astrozap
    More on the way

    This Product Has Been Discontinued And This Is Here for Informational Purposes Only. It Is No Longer For  Sale. AstroZap Dew Heater Strap for 16" T...

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    $71.00 - $71.00
    $71.00
    $71.00 - $71.00
    $71.00
  • Close up of astrozap Rigel finder dew heater strip.
    $46.00 - $46.00
    $46.00
    $46.00 - $46.00
    $46.00

    Astrozap Rigel Quik Finder Heater

    Astrozap
    In Stock

    AstroZap Dew Heater Strip – For Rigel Quick Finder Keep Your Quick Finder Dew-Free and Ready All Night The AstroZap Rigel Quick Finder heater strip...

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    $46.00 - $46.00
    $46.00
    $46.00 - $46.00
    $46.00
  • Flexi-Heat Dew shield for 6" Meade SN-6 LXD55/75 Schmidt-Newtonians
    $71.34 - $71.34
    $71.34
    $71.34 - $71.34
    $71.34

    Astrozap Flexi-Heat Dew Shield for 6" Meade SN-6 LXD55/75 Schmidt-Newtonians

    Astrozap
    More on the way

    AstroZap Flexi-Heat Dew Shield for Meade SN-6 LXD55 / LXD75 Schmidt-Newtonians The Meade SN-6 Schmidt-Newtonian delivers wide-field views with fast...

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    $71.34 - $71.34
    $71.34
    $71.34 - $71.34
    $71.34
  • AstroZap AZ-814-N-2 Flexi-Heat heated dew shield for Celestron 14" SCT with dual dovetails
    $190.00 - $190.00
    $190.00
    $190.00 - $190.00
    $190.00

    Astrozap Celestron 14 SCT Flexi-Heat® Heated Flexible Dew Shield - with Lower Dovetail Notch

    Astrozap
    In Stock

    AstroZap Aluminum Dew Shield – For Celestron 14" SCT with Single Dovetail Heavy-Duty Dew and Glare Protection for Fork-Mounted and OTA-Only Configu...

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    $190.00 - $190.00
    $190.00
    $190.00 - $190.00
    $190.00

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