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Heated Dew Straps & Shields

 
 

Do you ever get dew build up on your telescope? If so, you definitely aren't alone! The question becomes what can you do about it? How can you prevent dew build up on your telescope? The good news is that there are a few options!

Before considering a telescope dew heater or heated dew shield. We advise that you take your telescope outside and set it up a an hour or two before you plan to use it. This will let your scope acclimate to the outside environment and reduce the chances of dew build up on your telescope!

Depending on the conditions you may or may not experience dew build up on your telescope after you let it acclimate to the outside. In the event that you do begin to see dew build up on your telescope we would advise that you look at a telescope dew heater or heated dew shield for your telescope!

Our favorite dew heaters to recommend are the AstroZap Dew Heaters. Astrozap dew heaters are produced in the United States and offer an exceptional quality!

The first step in determining what dew heater is right for you is to measure the circumference of the surface that you are looking to eliminate dew from. In most instances amateur astronomers want to eliminate dew from the objective lens of their telescope. If you have an 8" SCT for example you would want an 8" Dew Heater Strip. If you have a 4" refractor you would want a 4" dew heater strap. The calculation really is that easy!

How do you power your telescope dew heater strip? The answer is simple, all you have to do is purchase a Dew Heater Controller! Our favorite is the Thousand Oaks Digital Dew Heater Controller. This bad boy allows you to connect, power and variably control 4 dew heaters at once! Beyond that there are other high quality dew controllers from AstroZap & Dew Not that you can choose from.

If you are looking for a more aggressive approach to telescope dew prevention you may be in the market for a Heated Dew Shield. AstroZap has cornered the market in this category and for good reason, their quality is exceptional! The sizing of a heated dew shield works the same as sizing for a heated dew strip. Take the size of your objective and match that to the appropriate heated dew shield. For example if you have a 10" SCT you would want to use a 10" Heated Dew Shield. To power the heated dew shield you are also going to need a dew controller to manage temperature of your heating unit. We sell a number of telescope dew controllers and the quality of all of them is excellent and you really can't go wrong with whatever you choose.