So, while visiting numerous photography forums over the years, I can't remember any other discussions about cosmic-ray damage except in RFF.
Ionizing radiation can damage sold-state electronics. Cosmic ray flux peaks at an altitude of ~ 15 KM (~ 50,000 ft). The flux is less at typical airline cruising altitudes (link
). The flux for the northern and southern hemispheres is higher than at the equator. The flux peaks over the poles. The flux is not constant, it varies form day to day.
The more one flies at typical cruising altitudes, the higher the exposure to high-energy radiation.
The ionizing radiation that enters the atmosphere days doe to collisions with atmospheric nitrogen and oxygen. This is the primary protection mechanism for people and cameras.
- Where are the reports of CDD/CMOS cosmic rays for other camera brands?
- Where are the reports of cosmic-ray damage for smart phone cameras? (How many millions of these devices fly every year?)
- I can't think of any reason for a Leica CCD sensor bed to be more vulnerable to cosmic ray damage than any other PIN photo-diode device.
What would Ockham speculate about the most likely cause of M9 sensor electronic issues?