Imaging last week when I came to close down and pushed the dew sheild back on the Lunt so I could swing the roof back over I discovered quite a heavy dew load on the front of the objective. So I guess it's time to DIY a dew heater system.
I have an old electric blanket that will donate some heater wire but with a refractor where is the best position to mount the heater ? OTA Exterior just below the objective or the dew sheild itself ?
What sort of heat output required for a 102mm scope ?
I'll need to make it able to slide down the OTA at evenings end so I can close up the roof.
I have a power supply or three and can setup to switch between 5v, 12 v for a low\high setting. Is it really necessary to get finer control with pulse width controls etc ?
Suggestions and advice welcomed
