[gregbradley]

I have never used a dew heater before. My experience with SCTs was when I first started in astrophotography and I moved on to other types of scopes fairly quickly.

My AP RHA may not really need dew heaters but I thought it would be good to have one available should I need it. I don't want any dew forming on the mirrors as I am sure it leaves a slight residue stain if it happens repeatedly.

Kendrick is one name I have heard of.

I would appreciate others knowledge of whats out there that is top notch.

Do dew heaters distort the optics appreciably or is it minimal and not really an issue for imaging?

Greg.