How do people take photos of galaxies with 50 hours of exposure? How is it possible to aim at the same spot while earth is doing more that 2 rotations in that time?
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>How is it possible to aim at the same spot while earth is doing more that 2 rotations in that time?
There are parts of the sky that never go below the horizon. For example, where I am I can always get a view of the north star and the dippers.
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