Navy Precision Optical Interferometer
(NPOI, Navy Prototype Optical Interferometer)
(optical interferometer in Arizona)
The Navy Precision Optical Interferometer (NPOI,
originally termed the Navy Prototype Optical Interferometer)
is an optical interferometer at Lowell Observatory
that is a collaboration of the USNO and Lowell Observatory.
It began operation in 1997.
(telescope,interferometer,visible light,Arizona,optical interferometer,ground)
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