🇬🇧 Greenwich 🇺🇳
🇫🇷 Paris
🇨🇿 Štefánik’s Observatory

---

🇵🇷 Arecibo
🇨🇱 Atacama Large Millimeter Array
🇦🇲 Byurakan
🇹🇳 Carthage
🇪🇸 Fabra
🇨🇳 FAST Telescope
🇺🇸 Gemini North
🇨🇱 Gemini South
🇺🇸 Green Bank
🇺🇸 Griffith
🇺🇸 Haleakalā
🇮🇳 Jantar Mantar
🇺🇸 Kitt Peak
🇨🇱 La Silla
🇺🇸 Mauna Kea
🇺🇸 Mount Lemmon SkyCenter
🇺🇸 Mount Wilson
🇯🇵 Okayama
🇺🇸 Palomar
🇨🇱 Paranal
🇷🇺 Pulkovo
🇪🇸 Roque de los Muchachos
🇿🇦 SALT
🇸🇬 Singapore
🇨🇭 Sphinx
🇺🇸 Stellafane
🇯🇵 Subaru Telescope
🇿🇦 Sutherland
🇦🇺 Sydney
🇪🇸 Teide
🇻🇦 Vatican
🇺🇸 Very Large Array
🇺🇸 Yerkes