What is the primary purpose of the 1.55-meter Kaj Aa. Strand astrometric reflector at the USNO Flagstaff Station?
Answer
It was used to discover Charon, Pluto's largest moon, in 1978.
The 1.55-meter Kaj Aa. Strand reflector at the USNO's Arizona station is historically significant for being the instrument that led to the discovery of Charon in 1978.
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