Quote:
Originally Posted by pmrid
Guys, I don't question that cosmic rays can and do occasionally zap a sub or two. But my instinct says that can't be what's happening here because:
(a) I have 2 other CCDs working here and neither is showing this problem; and
(b) these flashes are not straight-line. My simplistic understanding is that Cosmic Rays would produce a straight flash whereas these are bent, curved, non-linear.
Peter
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Some cameras are more prone to then than others.
My SBIG cameras seem to get more. I think it is from decay events occurring in the cover glass.
I remember reading that most probably are not actual cosmic rays but from local radioactive decay. These could be low or high energy.
I use to have very few when I lived in Moree which is on the western plains of NSW. I now live in the ranges on a big lump of granite and have many more ray hits. Whether it is the increased altitude or the natural radiation from the granite I'm not sure.
Curved or forked rays can be from decay events occurring in the glass or CCD.