(meteorobs) Heat required to prevent dew in a box for allsky camera

[Chris Peterson]

Well, like I said, the Sandia design isn't very good. Radiant heat is 
not a very efficient way to raise the temperature of acrylic. Convection 
is much more efficient, and therefore you need much less energy to get 
the job done.

My camera design is operating all over the world, from the arctic to the 
tropics. It simply doesn't dew up, under any conditions. The convective 
heating system can always maintain the dome above the dew point, with 
nothing more than the camera (and usually, it's power supply) providing 
the heat.

Chris

*******************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 11/22/2014 12:55 PM, Ed Majden wrote:
> Chris:
>      Maybe where you live but on the WET Coast of Vancouver Island more heat
> is required.  Even the Sandia All-sky can dew up here.
> Ed