Sorry for the late response, I was out of business some time sad.png

I had the Raspi with the changed case in use now for several sessions. I also had some concerns regarding the open GPIO pins. I solved that with a piece of foam which I just put on the pins. 

Last week I had about 15°C to 20°C in the night and the Raspi was working with kstars and PHD2 guiding at 51°C. This I had with the old case during winter wink.png

Till now I had no problems also during at least two foggy nights, where the telescope was wet afterwards. I think due to the "heat" of the big heat dissipator (which coveres the whole Raspi) there was no fog on the raspi (dew heater).

All in all I'm quite happy with that case