List of largest optical refracting telescopes - Wikipedia
Our Observatories — The Cincinnati Astronomical Society
How many great minds does it take to invent a telescope? - Vatican Observatory
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Future Galileos Program' features reflective telescope, peak at timely 'sun shield' in Devou Park | NKyTribune
Tamke-Allan Observatory - Wikipedia
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Cincinnati Observatory – Cincinnati, Ohio - Atlas Obscura
Antique telescopes, Lohnmann Brothers telescopes Greenville Ohio
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Antique Telescopes & Refracting Telescopes For Sale | Observa Dome Laboratories
Reflecting Telescopes for Sale | Unbeatable Prices | OPT Telescopes
Cincinnati Observatory · 365 CINCINNATI
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Cincinnati Observatory Center | Observatories of Ohio
USNO's 12-inch refractor telescope
The Cincinnati Astronomical Society acquired this 8" Alvan Clark & Sons Refracting Telescope way back in 1924, but this gorgeous antique tel… | Telescopi, Strumenti
How To: Use a Telescope with Dean Regas - YouTube
Telescope: The 26-inch Photographic Refractor & the 30-inch reflector of the Thompson Equatorial (1896)
Cincinnati Observatory · 365 CINCINNATI
Cincinnati Observatory Center | Observatories of Ohio
Refracting vs. Reflecting Telescope Overview & Parts | What Are Telescope Parts? - Video & Lesson Transcript | Study.com
