Yesterday I installed the Kendrick's Dew Heater to my secondary mirror. I caught myself grabbing the edge of the mirror with my index finger as I squeezed the dew heater to the back of the mirror to set the bond. I quickly stopped. When I was looking through the empty focuser tube, I saw where my finger was on the mirror, as there was a pretty significant finger print. I gently wiped it and noticed what looks like a bubble or small chip. At first I thought perhaps some of the glue got on the mirror, so I took a cotton wipe and put a little distilled water on it and gave it a very gentle wipe. This crack, chip or whatever it is remained. It's very, very small on the lower left edge of the mirror as I'm looking at it through the focuser. I'm now wondering - A. Will this effect the image? B. Will the crack continue to grow? And finally C. Can I get a replacement mirror for my telescope?
I've been putting off installing the dew heater for weeks. I am now regretting putting it on!
Edited by sdeming, 25 January 2021 - 07:51 AM.