rb99:Annoyance no 1 - Thieves steal copper roof from observatory.
Annoyance no 2- 200,000 to repair. How the hell does it cost $200,000 to stick a few bits of metal to some wood...
That looks like an awful lot of custom formwork by specialists who are presumably in very short supply in NZ. A branch of Neb's family does this work in Europe and it's not just a case of stapling a few sheets in place, for custom shaping like this you need to book the right people a long time in advance, and it's a lot of work getting it formed up.
Having said that, today it may make more sense to put in a fibreglass (FRP) dome, it'd do the same as copper but be lighter, cheaper, easier to manufacture, and uninteresting to thieves.