The Caltech Submillimeter Observatory was a 10.4-meter diameter submillimeter wavelength telescope situated alongside the 15-meter James Clerk Maxwell Telescope at Mauna Kea Observatories. Beginning i
Caltech Submillimeter Observatory.
The CSO site after the telescope and dome were removed, and the site was restored.
The Maunakea Observatories have been controversial since the first telescope was built in the late 1960s. Originally part of research begun by Gerard Kuiper of the University of Arizona, the site has
Three of Mauna Kea's existing telescopes: the Caltech Submillimeter Observatory (foreground), the James Clerk Maxwell Telescope (middle distance), and the Submillimeter Array (background)
Kealoha Pisciotta, a former Maunakea Observatories employee, testifies at a State hearing in 2011.