[coldlegs (Stephen)]

Thanks Barry
There might be a small problem still as your sensor (ICX419) is 7.4x5.95mm and mine (KAF8300) is 17.96x13.52mm . So I'm going to get a wider view and might run into problems. Anyone using a KAF8300 in this combination??

Cheers
Stephen

Originally Posted by Amaranthus

Yes, I've used that combo for narrowband imaging. Yields a nice flat field at f/4. Here's a couple of example images:

M42 http://www.astrobin.com/127280/B/
Helix http://www.astrobin.com/135036/D/