Dew forms inside of allsky (if thats ok to post here)

[digitalurban]

Morning,

This might be the right place but its arguably where all the expertise is - my most recent build of an allsky is getting water build up inside the dome - see

https://finchamweather.co.uk/allsky/)

The unit is sealed with sealant and presprayed to be water tight - is this the opposite to what i need to do, ie do i need airflow inside the unit to stop the water droplets forming?

Happy to delete if this should go elsewhere,

Andy

[EricClaeys]

Andy, this is a fine place for the post, but note that more end users are on the Allsky Facebook page so you may want to try there as well.
Many of us have fans that bring in fresh, cooler air to both cool down the CPU and sensor and to minimize dew. Quite a few people also have dew heaters, often controlled by weather data. Look for other Discussions here as well as on Facebook.
Dew heaters can also help melt snow and ice on the top of the dome.
My unit is in the dry mountains of New Mexico so dew isn't an issue, but I have a fan controlled by the CPU temperature.

[digitalurban]

Thanks for the reply - i will look at adding some ventilation and adding a fan :) I

Andy