There are over 350 professional observatories operating telescopes for research in the United States.

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
  • Alabama observatories
  • Alaska observatories
  • Arizona observatories
  • Arkansas observatories
  • California observatories
  • Colorado observatories
  • Connecticut observatories
  • DC observatories
  • Delaware observatories
  • Florida observatories
  • Georgia observatories
  • Hawaii observatories
  • Idaho observatories
  • Illinois observatories
  • Indiana observatories
  • Iowa observatories
  • Kansas observatories
  • Kentucky observatories
  • Louisiana observatories
  • Maine observatories
  • Maryland observatories
  • Massachusetts observatories
  • Michigan observatories
  • Minnesota observatories
  • Mississippi observatories
  • Missouri observatories
  • Montana observatories
  • Nebraska observatories
  • Nevada observatories
  • New Hampshire observatories
  • New Jersey observatories
  • New Mexico observatories
  • New York observatories
  • North Carolina observatories
  • North Dakota observatories
  • Ohio observatories
  • Oklahoma observatories
  • Oregon observatories
  • Pennsylvania observatories
  • Rhode Island observatories
  • South Carolina observatories
  • South Dakota observatories
  • Tennessee observatories
  • Texas observatories
  • Utah observatories
  • Vermont observatories
  • Virginia observatories
  • Washington observatories
  • West Virginia observatories
  • Wisconsin observatories
  • Wyoming observatories

    • There are over 600 professional observatories operating worldwide (excluding the United States.

  • AFRICA OBSERVATORIES
  • ANTARTICIA OBSERVATORIES
  • CENTRAL AMERICA OBSERVATORIES
  • CENTRAL ASIA OBSERVATORIES
  • MIDDLE EAST OBSERVATORIES
  • SOUTH AMERICA OBSERVATORIES
  • SOUTHEAST ASIA OBSERVATORIES
  • Argentina observatories
  • Australia observatories
  • Austria observatories
  • Belgium observatories
  • Brazil observatories
  • Bulgaria observatories
  • Canada observatories
  • Canary Islands (Spain) observatories
  • Chile observatories
  • China observatories
  • Croatia observatories
  • Czech Republic
  • Denmark observatories
  • England observatories
  • Estonia observatories
  • Finland observatories
  • France observatories
  • Germany observatories
  • Greece observatories
  • Hungary observatories
  • India observatories
  • Indonesia observatories
  • Iran observatories
  • Ireland observatories
  • Israel observatories
  • Italy observatories
  • Japan observatories
  • Kazakhstan observatories
  • Lebanon observatories
  • Lithuania observatories
  • Mexico observatories
  • New Zealand observatories
  • Netherlands observatories
  • Norway observatories
  • Poland observatories
  • Portugal observatories
  • Romania observatories
  • Russia observatories
  • Scotland observatories
  • Singapore observatories
  • Slovakia observatories
  • South Africa observatories
  • South Korea observatories
  • Spain observatories
  • Sweden observatories
  • Switzerland observatories
  • Thailand observatories
  • Turkey observatories
  • Ukraine observatories
  • Venezuela observatories
  • Wales observatories