Here is a NexDome assembled in 3.5 hours. Obviously these guys knew what they are doing but it also shows how easy it is to assemble one. The assemblers told us that there was a heavy rain fall right after the completion of the NexDome and not a single drop of the water was seen inside, not even on the floor.
NexDome observatories are also available without an enclosure. This means you can order just the dome and attach it to your own observatory.
Order the NexDome 2.2m observatory dome with base ring for this purpose. The ring is placed on the observatory enclosure. Rollers are mounted inside it, on which the dome is mounted and can then hence be rotated.
You can design your observatory using your own concept.
Even as a roof observatory
Examples of using the NexDome observatory dome for a roof observatory are already available on the Internet. The low weight and the delivery in individual parts make this dome particularly suitable for this. It does not need a crane - you can mount it directly onto the roof.
This example also shows the NexDome 2.2m observatory dome with base ring.