CelestronDew Heater Ring – Aluminum Dew Prevention – Compatible 8” Schmidt-Cassegrain, EdgeHD, RASA Telescope

Works great, Great addition to my Astronomy gear. using and Celestron 8SE

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.

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

just like the ad description. easy install, works great. would really like to see it sold with a battery powered electricalsource.

works great if you can control power level. like with a Asiair or dew controller. gets hot and distorts stars. 35% power worked well with my Asiair. looks good too. Do Not move wires in the Cold! they will break. Take scope in and allow it to warm up without the cap.

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.

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.

This was easy to install and works!