Azimuthal semicircle in Taqī al-Dīn's description of his instruments & observatory in Istanbul, 1570-90 https://t.co/NbDUyVpsJ5

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2017-01-15

Chapter 3 - Page 15. Scary Azimuth and nice sprites

http://t.co/cv1pCjCeDX

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2015-01-23

Beautiful screenshots from To Azimuth. Consider helping them on Kickstarter: https://t.co/gdhzOHhGvb

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2014-12-06