Hi Guys
I am considering purchasing the below filter to thread onto the end of my Bintel 2inch Camera adapter. I am concerned that the filter may suffer from dew as it is exposed to the night air in my Newtonian scope.
Since the filter will likely rest on a inward focus or close to it a dew heater wrap around wont be able to be applied directly around the filter itself.
Can anyone suggest a work around to keep Dew off?
http://www.bintel.com.au/Astrophotog...oductview.aspx
http://www.optcorp.com/idas-light-po...d-mounted.html