Barb& David, The secondary on my LB12" succumbed to the same problem.
I have home made dew heaters for the e/p and Finderscope but before I go pulling the secondary apart, I've made a dew shield for the front. This should stop the rapid loss of heat from the mirror and hopefully holding off the dew. It extends 38cm out from the front.
This is a lot cheaper than the alternative. Cheers, John
Quote:
|
Originally Posted by Tamtarn
Because of the weather situation at the moment we're experiencing occasional fogging of the secondary mirror. 
We've investigated the Kendricks Dew Guard and apparently you have to dismantle the mirror and it's attachment to fit the Dew Guard but not having any experience in dismantling any part of our Dob as yet we would rather some simpler sollution if there is such a thing !  Also we're technically challenged  so Sheeny's DIY is out of the question.
We have a Kendricks Controller which we've used with our Kendricks Dew Heater on our ETX 125.
Would a Dew Shield help ?
Hoping the IIS experts can come up with some suggestions.
Barb & David |