Caltech Submillimeter Observatory

Caltech Submillimeter Observatory
Location(s)Hawaii County, Hawaii
Coordinates19°49′21″N 155°28′34″W / 19.8225°N 155.476°W / 19.8225; -155.476 Edit this at Wikidata
OrganizationCalifornia Institute of Technology Edit this on Wikidata
Altitude13,570 ft (4,140 m) Edit this at Wikidata
Wavelength1,300, 350, 850 μm (230, 860, 350 GHz)
Built–1985 (–1985) Edit this at Wikidata
First light1986 Edit this on Wikidata
Decommissioned2015 Edit this on Wikidata
Telescope styleobservatory
radio telescope Edit this on Wikidata
Diameter10.4 m (34 ft 1 in) Edit this at Wikidata
Websitewww.submm.caltech.edu/cso/ Edit this at Wikidata
Caltech Submillimeter Observatory is located in Hawaii
Caltech Submillimeter Observatory
Location of Caltech Submillimeter Observatory
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The Caltech Submillimeter Observatory (CSO) was a 10.4-meter (34 ft) diameter submillimeter wavelength telescope situated alongside the 15-meter (49 ft) James Clerk Maxwell Telescope (JCMT) at Mauna Kea Observatories. Beginning in 1986, it was engaged in submillimeter astronomy of the terahertz radiation band. The telescope closed on September 18, 2015.[1]

Disassembly of the Caltech Submillimeter Observatory's (CSO) 34-foot diameter telescope on Maunakea began the week of August 28, 2023. The entire remediation process is expected to be completed by summer 2024 and cost more than $4 million. CSO is the first observatory to be removed under the Decommissioning Plan of the University of Hawaiʻi Maunakea Comprehensive Management Plan.

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