Re:Hubble Reveals Latest Portrait of Saturn
by xioxox on Sunday September 15, 2019 @04:11PM
(#20979232)
No they're probably not (I'm an astronomer). They're likely cosmic rays. When I've used Hubble data, then the processing uses multiple images to remove the cosmic rays (which aren't in common between images).
[ Parent
| on HN ]
Re:Hubble Reveals Latest Portrait of Saturn
by metafunctor on Sunday September 15, 2019 @06:56PM
(#20979948)
I'd love to understand how those bright dots and lines (so, cosmic rays?) appear on these images.
Re:Hubble Reveals Latest Portrait of Saturn
by xioxox on Monday September 16, 2019 @05:22AM
(#20982326)
They're just high energy particles that interact with the CCD cameras typically used for astronomy. You get a bright point or particle track, as the particle interacts with the CCD producing electrons. This is worse for space telescopes, as there are more cosmic rays in space. For some simple information see: http://spiff.rit.edu/classes/phys373/lectures/cosmic_rays/co...