Stiffing the thin metalsheets using some wood

Constructing the center rolls

The first idea to make a foldable dome was given up, due to the weight of the whole construction.
Now, using a plug-in system, makes the setup of the "dome" (cube) easier

Following animation shows the setup of the cube which can be done easy in  15 minutes.

It was a kind of victory for me when everything moved  finally as I have planned :-)

Now I am starting constructing of the moveable telescope pier............