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Real Time Streaming Audio and Spectrograph are currently down due to connectivity issues.

The ACO website will be down on 13 Jan 2018 from 07:00 to 17:00 HST for scheduled maintenance.

New ACO instruments were installed during the ACO-3 cruise on 2014/11/01. Click here for ACO-3 videos.

Cable Termination

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The cable now connecting the ACO to Oahu used to run from Hawaii to California before AT&T donated it to the ACO project.

An enormous Navy vessel called the Zeus, designed to install and repair cables, was used in February 2007 to cut the cable near Station ALOHA and move one end to our location, with a "proof module" attached. The proof module proved the viability of future observatory installations.