3 ms·
The stars puzzle helped me find a speck of dirt on my phone screen.
by dogman1050 2y ago
The stars puzzle helped me find a speck of dirt on my phone screen.
- dylan604 2y agoThe funny thing about the stars image is this is a common way to find asteroids, comets. It's not limited to just those. Only instead of a bunch of cross eyed astronomers, they overlay and align the images and do subtraction/difference filtering to see what's left. For comets/asteroids, the dot of interest will move between frames. Even just playing back the aligned images as a timelapse can reveal motion.
- dredmorbius 2y agoAlso handy for identifying dead pixels!