Hi,

I went to all astro-related spreadsheets I developed over the years, made a clean up and created a dedicated website (www.astronomy-morsels.ch) to share them. They covering topics such as Spacetime (special relativity), Lagrange points (points of equilibrium), telescope equations, moon phases, planetary positions, star and Messier object observations, etc.  Also, models of gear trains of astronomical clocks are analysed (e.g., Antikythera, Eise Eisinga Planetarium, Prague Orloj, Ancient Maya Solar System). These morsels are free and I hope they can aid in your astronomical interests.

Best,

Anton
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