Celestron – Dew Heater Ring – Aluminum Dew Prevention – Compatible 6” Schmidt-Cassegrain Telescope Black

It looks great, fits and works perfectly and it's very reasonably priced. I wish the controller for it was more affordable.

This was easy to install and works!

Installation on my 9.25 sct was straightforward. High quality design. Only issue i had was putting the scope cover back on. If you put your scope vertical it goes on easier.

Easy to install - follow the directions. I would run this with a few controller - lots of reports that this running on high will cause star optic abnormalities.It is effective at dew control even at low power use.

This dew heater ring works very well. It went on easily and fits my Edge 800 perfectly. Shortly after putting it on, I noticed my stars had strange refraction spikes on opposite sides. After doing some research, I tried turning down the power to about 30% and the spikes went away. So just be aware that this ring gets very hot at 100% power - so hot, you cannot touch it. That heat does some strange things to the corrector plate and can make your stars look funny. I am happy with how well it works now, but clearly, the design is lacking and was not well thought out or tested.

I actually read the instructions before the package arrived, even though it seemed unmanly to do that. Installation was a snap. I bought it to replace the DIY heater made with Nichrome wire from a toaster and a cheap PCM controller from Amazon. It worked, but it lacked class. The Celestron heater works and has class.Dew is a nearly constant problem between the coastal marine layer and the radiation fogs from the Valley. I have heaters on all my scopes and "on" is the default position. Only one night's use so far, but it does look as if the Celestron heater ring is up to the job. The inline controller is smaller than the variable controller I was using, which makes cable routing much easier and neater.

I was very apprehensive about the installation but the instructions were well written with great pictures and the installation was very simple. The dew heater has kept my lens dew free.

I have a very nice telescope. The problem is the condensation on the lens (all). I use it in central Florida at our retreat out in the country. The moisture is terrible for scopes at wee hours of the morning and I have not been able to use this wonderful scope ( all computerized) for over a year because of the parts I wanted were made in Russia by a small business i learned about on telescope Web sites, but the Russian war made it impossible to buy it until they moved part of their business to USA just for Americans. I saw this and could not wait to get it for my scope. Works like a Florida dream. Highly recommend if you watch the stars late at night for hours. Just have a good battery (deep cell) to keep your tele warm.