[jasperskies (Alan)]

Hi,
I have a roll-off roof observatory in sub-tropical northern NSW and the observatory is not air tight at all (unlike a domed observatory). I run a dehumidifier and it takes 10L of water out each day (its maximum limit).
I suspect it is a self-defeating exercise as I have never been able to confirm that the humidity levels actually drop as a result.
Do others with similar observatories run dehudifiers? Do they have better success?
Thanks, Al