Star-finders Astrolabes by Cem Nizamoglu

https://muslimheritage.com/star-finders-astrolabes/ Over a thousand-year period in Muslim Civilisation, epoch-making discoveries and contributions, such as the first record of a star system outside our own galaxy were made. Also astronomical instruments including celestial globes, armillary spheres, sextants and especially astrolabes were developed laying the foundation for modern-day astronomy.