Space mission · United States

What final construction-project cost did GAO report for the Daniel K. Inouye Solar Telescope?

The Daniel K. Inouye Solar Telescope on Maui observes the Sun with a four-metre primary mirror. In its review of National Science Foundation facilities, the U.S. Government Accountability Office reports that construction finished in November 2021 at a final total project cost of US$363 million. NSF had originally authorized US$297.9 million for the 2010 construction award; the later figure is the completed project cost, not an annual operating budget.