Hi,
Thanks for the comments Glen and Brent,
Don't be worry, I will anchor the building into the rock later, just have to find a machine that could drill the holes in the rock. I want some flexibilty so I can can fine adjust the position of the buidling around the pier, it's very tight under the house with the mechanism to the roof.
I also have to add more srews to the plastic roof, otherwise heavy winds can rip it off.
How about you, do you have a homepage (I see astrophotos but no observatory) or a place with photos of your observatories? It's always interesting to see others constructions.
/Lars
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