[mithrandir (Andrew)]

Originally Posted by John K

How about these?

http://www.optcorp.com/sbig-stf-8300...cd-camera.html

http://www.optcorp.com/atik-450m-mon...ny-icx655.html

http://www.optcorp.com/qhy-9-mono-wi...heel-qhy9.html

John, 8300 powered ones are closest in image size to your APS-C 400D. Gama has the QHY9S plus filter wheel listed for $2500. There's also the Atik 383L+ but even Andrews want close to $2800 for just the camera.