Astrobin is down right now - need to upload a file to also show the extent of the vignette etc for a 3 hr integration with CORRECT flats, darks and bias.
Here at least is a 300% zoom of the bright spikes - notice the spectral lines etc - almost like a prismatic effect like an ice crystal (I keep convincing myself its ice
). I checked ALL glass for potential cracks or chips - nothing.