I have a new 6200M that is great but with my old SBIG 8300M the circuit board was open to the elements and had to be replaced twice due to condensation. We have high humidity. Is the board on this camera protected? There are plastic sprays that can be used on circuit boards such as those in refrigerators subject to condensation. Is this one protected.... on the SBIG I ran it very long post dawn and has a strip heater on the outside.....