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Observatories
observatories

2021 Global Observatory Directory

Directory of over 1,000 professional astronomical observatories and telescopes worldwide.
Also see the Event Horizon Telescope, radio telescopes, space telescopes, and space ports.

U.S. Observatories

There are over 350 professional observatories operating in the United States.
Here are the 15 largest telescopes in the U.S.

AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY

Observatories Worldwide

There are over 600 professional observatories operating worldwide outside of the United States.