The Navy Prototype Optical Interferometer (NPOI) is an interferometer operated by the US Naval Observatory, the Naval Research Laboratory and The Lowell Observatory. To date it has produced the highest resolution optical images of any astronomical instrument (this is likely to change when the CHARA array and Magdelena Ridge Observatory Interferometer begin operations). Interferometry is the applied science of combining two or more input points of a particular data type, such as optical measurements, to form a greater picture based on the combination of the two sources. ... Aerial view of USNO. The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States. ... -1... Percival observing Mars from the Clark telescope at the Lowell Observatory. ... The Magdalena Ridge Observatory Interferometer will be an optical array composed of ten telescopes, each approximately 1. ...

External links

• The Navy Prototype Optical Interferometer webpage (http://ftp.nofs.navy.mil/projects/npoi/)