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Simon,
If you are really game - why not buy a second hand DSLR and get a big chip ?
The Olympus E300 cameras use an 8mp KAF8300c chip - 3326x2504 x 5.4µm pixels in a 4/3rds format.
This is the same chip used by all the big name astro cameras in their cameras - either as the mono version or colour.
Best thing is you can buy these things for well under US$300 these days
cheapest I have seen recentlly was US$175, but that came with a lens as well !
So you either scavenge the chip and build your own controller or you just use the camera as is after doing an IR mod.
Where can you buy a one shot colour astro camera for a few hundred bucks ?
Chilling - well thats another issue and I am unsure if its been done to this camera.
Of course we all expect you to publish your DIY project now !!!
Good luck
Rally
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