DESCRIPTION
Clear Skies Shouldn't Be a Guessing Game
There's something almost magical about a perfectly sharp view of Saturn's rings on a crisp night — and something deeply frustrating about watching that view slowly disappear behind a veil of dew. If that sounds familiar, you're definitely not alone. It happens to almost every astronomer at some point, and honestly? It's one of the easiest problems to solve once you have the right tool.
The AstroZap Dual Channel Dew Controller (AZ-720) is one of our most loved accessories here at Astronomy Haven — and it's easy to see why. It gives you gentle, reliable control over up to four dew heaters at once, so you can spend less time worrying about your optics and more time actually enjoying the sky.
Two independent channels mean you can adjust the heat exactly where you need it. A little warmth on the eyepiece, a bit more on the corrector plate — whatever your night calls for. And because it uses smart pulse width modulation technology, it's not just blasting power constantly. It sips energy carefully between 5% and 95% output, which means your battery lasts longer and your heaters are treated kindly too.
The glowing LED indicators are a small but lovely touch — even in complete darkness you can tell at a glance exactly what each channel is doing. And if your power source starts running low, the built-in low voltage warning gives you a gentle heads-up before anything goes wrong.
A few things worth knowing:
- 2 channels × 2 outputs = 4 heater ports total
- 5 amp total capacity — plenty for most telescope setups
- Runs on 12V DC — car battery, portable power station, all good
- RFI-free — really important if you're doing astrophotography (interference ruins images)
- Includes a Velcro strip for easy mounting on your scope or tripod
- Proudly made in the USA 🇺🇸
Why choose the Astrozap D/C Dew Controller?
1. Precision Control for Optimal Viewing
The Astrozap Dual Channel Dew Controller provides precise control over dew prevention with two channels managing a total of four outputs. Offering a duty cycle from 5% to 95%, it allows you to fine-tune the settings for optimal performance, ensuring crystal-clear views during stargazing sessions.
2. Versatile Compatibility and Easy Mounting
Compatible with Astrozap Flexi-Heat™ dew shields and Dew Heater Straps, this controller ensures versatility in your astronomy setup. The RCA output connectors also accommodate other brand dew heaters. With a ¼-20 threaded insert and Velcro straps, the controller offers flexible mounting options, allowing you to easily attach it to dovetails or other locations based on your telescope configuration.
3. Advanced Power Management
Operating on 11-14 Volt DC, the Astrozap Dew Controller features a total amperage capacity of 5 amps across all outputs. It comes with a six-foot, removable power cord equipped with a cigarette lighter plug end and 5-amp fuses in both the plug and inside the unit for added protection. An optional A/C Power Adapter (AZ-724) is available for greater flexibility, ensuring the controller meets your power needs in various settings.
4. User-Friendly Adjustments and Indicators
The blue and white knobs provide easy adjustments for each channel, with red LEDs indicating power levels. The brighter the LEDs, the higher the duty cycle. This intuitive design ensures that you can quickly and easily manage your dew prevention settings.
5. Robust Safety Features
Safety is paramount with the Astrozap Dew Controller. It automatically turns off if power levels drop below 5 volts to protect your equipment. Red power LEDs indicate operational status, while yellow LEDs signal incorrect polarity, preventing potential damage.
6. Astrozap Quality Guaranteed
Astrozap is synonymous with quality in the astronomy community. Crafted with advanced materials and redesigned features, this Dew Controller upholds the Astrozap standard. The controller's reliability, durability, and performance reflect the commitment to excellence that comes with the Astrozap name.
Elevate your stargazing experience with the Astrozap Dual Channel Dew Controller. With its state-of-the-art features, versatile compatibility, and robust design, it ensures your equipment stays clear and functioning perfectly.
Disclaimer: Dew heater straps are sold separately.
What's in the box?
- Astrozap D/C dew controller ×1
- 6- foot power cord equipped with cigarette lighter plug ×1
SPECS
- Compatibility: All Astrozap Heat Bands and Flexi-Heat
- Warranty: Astrozap 1 Year
CA Residents: Prop 65 WARNING(S)
