An altazimuth was erected, designed by Airy to enable observations of the moon to be made not only on the meridian, but whenever it might be visible
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← George Biddell Airy timeline
An altazimuth was erected, designed by Airy to enable observations of the moon to be made not only on the meridian, but whenever it might be visible
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-18 from Wikipedia. The archived copy is preserved so this citation survives link rot.