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History of Astronomical Devices

Event held on Nov. 15, 2022, 7:30 p.m. Eastern time

Al-Sahlî's Astrolabe, c. 1067, an astronomical measuring and calculating device, in the collection of the National Archaeological Museum, Madrid, Spain. Credit: Luis García via WikiMedia Commons.
join us on Facebook or YouTube for a virtual presentation by E. C. Ambrose - "A Brief History of Astronomical Devices"

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Observing Conditions Mary Sherman Morgan Annie Easley Gravity wave calculation
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