[gregbradley]

Roland Christen has posted about tubed telescopes several times now and how bad tube currents can be and how badly they affect the scope.

As a general principle anything that generates tube currents would wreck your scopes performance.

Hence the temp controls on the RCOS's with the telescope command centre.

I did see a post by Roland about dew control not that long ago. As I recall it was as posted here by others - a fan blowing air up keeps the dew from falling in? As I recall a very small temp difference can prevent dew from forming. A fan across the surface of the mirror sounds good as the thermal layer that is maybe only 1mm thick on the surface of the mirror affects mirror performance.


Greg.