Astrozap Controller for Dew Heater Bands, Heated Dewshields
NOT AVAILABLE UNTIL JUNE 2011 $105.00,  Astrozap AZ-720,Telescope Accessories Accessories, Best Rated
Secure website, verified, safe for online shopping
The World's Largest Selection of Optics for Astronomy, Sport, Science and Education
Shop By Price
Shop By Interests
Gift Certificate

 


ASTROZAP CONTROLLER FOR DEW HEATER BANDS, HEATED DEWSHIELDS NOT AVAILABLE UNTIL JUNE 2011 AZ-720

  Astrozap Telescope Accessories Accessories
Tell Friend  

Astrozap
Other products by Astrozap
Similar items
Astrozap Controller for Dew Heater Bands, Heated Dewshields
NOT AVAILABLE UNTIL JUNE 2011

Enlarge Photo
MSRP: $140.00
Sale Price: $105.00
Buy  Now!
Savings $35.00

Astrozap Dual Channel Dew Heater Controller AZ-720

Item No. 793-10720
Manuf. No. Astrozap AZ-720

Eligible for Scope City Rewards at Check-out

NOT AVAILABLE UNTIL JUNE 2011

The Astrozap dual channel dew heater controller AZ720 is simple, easy to use, compact, and lightweight (only 7 ounces). Its heavy duty plastic case measures 3.5" square by 1.5" deep (2" counting the two control knobs). It is supplied with a 2" Velcro strip for easy attachment to your telescope. There is a green LED indicator to show when the controller is getting power.

The controller has a fused male cigarette lighter plug on a 6' long cord. This allows you to connect it to a car's cigarette lighter plug or (preferably) a rechargeable 12V DC battery (to avoid accidentally draining your car battery and leaving you stuck at your dark sky site after a night of observing). The fuse has a 5 amp rating, the maximum amperage capacity of the controller.

There are four RCA output jacks on the controller into which you can plug your heater strips. All heater strip brands will work, in addition to Astrozap heaters. There are two control knobs, one for each channel. Each knob controls the power going to two of the four 12V outputs. For example, this allows you to use the two outputs of one channel to power the heaters for the main objective of a small scope and a laptop computer's LCD screen, while the second channel can be used at a different power setting to control the heaters for a Telrad and an eyepiece. With the addition of an RCA splitter cord, even more heaters can be attached, as long as you donýt exceed the maximum output capacity of the controller.

The controller uses Pulse Width Modulation technology to control the power going to your dew heater strips by turning the power on and off many times each minute. When the control knobs are set on medium, for example, the heaters draw the same amount of current whenever they are on, but they are on only 50% of the time. The power output from the Astrozap controller can be varied over a 5% to 95% duty cycle range. When the controller knobs are set at their lowest settings, the controller is effectively off. Two amber LEDs indicate the power level of each channel. The brighter each glows, the higher the duty cycle for that channel's two outputs. Low to medium is the recommended setting for most observing conditions. The controller is RFI (radio frequency interference) free, an absolute necessity if you are going to be doing digital imaging.

Owners of 12" and larger SCTs may need two controllers - one for the main objective heater and a second for any other heaters you wish to operate. The heater strips for the objectives of these size scopes can nearly max out the power output capacity of the controller by themselves.


Need Help? To Place an Order: Please Shop Online,
Visit Any Scope City Center or Call Us Directly at 1-800-235-3344
 


Scope City 100% Satisfaction Guarantee

Scope City unconditionally guarantees that you will be 100% satisfied with your mail order purchase, or just
return the merchandise in original condition within 15 days for a Full Refund, less shipping and handling charges!