I am trying to find a solution to the condensation that builds up on the secondary mirror of my newtonian. Attached are pictures of the secondary mirror stalk. The Kendrick heaters do not work on this style secondary. I will not wrap dew heater straps around the mirror as I don't believe that is a real solution, it would cause more problems than solutions. I don't want to use a hair dryer as I am trying to fully automate the session. I use a PrimaLuce Lab Eagle3 that I can power a dew heater from, and currently use one to heat my primary mirror and guidescope. I have tried building my own dew heaters from two 330 ohm resistors and nichrome wire. According to my calculations, the current draw should have been less than 3 amps on both of the contraptions I built, however the Eagle shows the current and wattage bouncing all over the place, going over the 3 amp limit allowed by the Eagle.
I am out of ideas and curious to hear about what others may be doing with this exact scope or similar secondary mirror styles.