Hi Peter,
I'll post some flats later, it won't be pretty cause I need 500x to see the cfa bits left and I do still have some specks left. but its not too bad either.
as for debayering, the trick is not to debayer. nothing to be done in the camera.
so just treat the files as mono.
in DSS, i believe there is an option not to debayer when opening raw files, in maxim, you can open them as is and stack and process, just don't debayer.
even jpg's straight off the camera can be used, just don't debayer.
edit: i'm not sure how to open them in DSS without demosaicing. I'll test and see.
at this stage, i've only tested in maxim and DPP.
here are some raw files from the camera you could try
https://www.dropbox.com/s/buy9v0k7w8etczw/IMG_1230.CR2
https://www.dropbox.com/s/ei4y83i3nx29od5/IMG_1224.CR2
I just bought a 600D. looking forward to debayering that. however, the small pixels and loss of microlenses may not make it that sensitive, but will test and see.
if only these clouds would clear.
Cheers
Alistair