[John Hothersall]

Hello IIS I am in UK waiting to emmigrate to Oz but here in UK my new Orion Optics 14" Newt made with Aluminium tube gets misting/ice on secondary on cold nights within an hour, with Newts I have not had this before and am putting it down to Aluminium tube loosing heat at the top more quickly.

I have ordered small Dew Not strap to put around secondary mirror cell stem which draws 3watts 0.25amps to see if this will help, I also have a foam dew shield I made myself but shielding 14" newt is difficult.

I may have to order 14" Dew Not strap to wrap around optical tube if the small heater strap does not work here in UK.

I just wondered what degree of dewing in humid Brisbane would I expect with an open tube newtonian. Will dewing in Brisbane be more of a problem for me than here in the UK.

Thanks JohnH.