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?
In: Technology
To slightly clarify what others said, because the distances between us and those galaxies involved are so huge, the difficulties in aligning shots spread 2-3 days apart is arguably less difficult than aligning two images taken 2-3 hours apart.
Latest Answers