Ballreich Observatory – Observatories of Ohio
File:Refracting telescope of the Strasbourg observatory.jpg - Wikimedia Commons
What Is an Astronomical Observatory? (with pictures)
Telescopes - Griffith Observatory - Southern California's gateway to the cosmos!
Palomar Observatory: Facts & Discoveries | Space
A brief history of Cincinnati Observatory and its heirloom telescope
Telescope observatory hi-res stock photography and images - Alamy
University Observatory | American Public University System (APUS)
Perkins Observatory – Observatories of Ohio
Lick Observatory - Wikipedia
Perkins Telescope Observatory
The Clark Telescope, built in 1896, at Lowell Observatory in Flagstaff, Arizona | Library of Congress
Vanderbilt Space Observatory | Planetarium On Long Island, New York
The Great Equatorial Telescope | Royal Observatory Greenwich
2017 Chile Astronomy & Stargazing Tour - Sky & Telescope - Sky & Telescope
New telescope a 'game-changer' | Phillips Exeter Academy
Wendelstein Observatory 0.2 m Solar Telescope | The 0.2m Sol… | Flickr
Haute-Provence Observatory - Wikipedia
Gemini Observatory - Wikipedia
Racine Astronomical Society - Modine Benstead Observatory
COVID-19 forces Earth's largest telescopes to close | Astronomy.com
Observing the Sky - Griffith Observatory - Southern California's gateway to the cosmos!
Astronomical observatory | Definition, Examples, & Facts | Britannica
