Mechanical Tracker Makes Pettit's Milky Way Shot Look Unreal
TL;DR Summary
Astronaut Don Pettit's Milky Way image from the ISS drew skepticism about its realism, but he explained it was captured using a mechanical sidereal tracker on the Cupola to cancel the ISS's motion, turning stars into fixed points; the device, built by RIT, was later returned to the university.
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