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How to use Stellarium’s Oculars plugin to match your optics
The Stellarium virtual planetarium is one of the most widely used open source specialized tools in the world. It features a captivating dome that counts over 600000 starts, hundreds of constellations and asterisms, planets with their moons and realistic sky effects like atmospheric scattering, shooting stars and supernovae simulation. It can serve as an educational tool, telescope guidance software, position calculator, or even as a rendered for fish-eye projection on domes.