Posted by pppone 3 hours ago
public almost never sees what raw images look like
RAW https://blog.galaxyzoo.org/wp-content/uploads/2010/04/spiral...
FINAL https://blog.galaxyzoo.org/wp-content/uploads/2010/04/spiral...
* https://blog.galaxyzoo.org/2010/04/12/how-to-handle-hubble-i...
they also slowly destroy the sensors since they are physical particles moving at almost the speed of light
do you happen to know how exactly those artifacts are cleaned up?
They take two pictures, each taking up half the total observation period. If you subtract the two images, the deltas should be the cosmic ray flashes. You can then subtract those out. They use two pictures as opposed to more to minimize the impact of readout noise.
To deal with "stuck pixel" type errors, they can slightly shift the camera between the two observations. They can counter act the shift before doing the initial subtraction.
Don't try to correlate with the sun spots, correlate with the solar wind/cmes from the spots getting out far enough to effectively scatter the incoming cosmic rays away.
There may be another variable they’re trying to pin down.
