Construction prices are not going down, especially for projects that are already in progress.
Unless you can afford to wait a year or more, I would buy now.
As a compromise, I suggest that the title of the thread be changed to reflect the fact that this discussion is for the entire redevelopment and not just the observatory
I disagree... Different professionals, different contractors and vastly different scopes of work.
The current project has nothing to do with the observatory that will be in the dome.