[gregbradley]

I am wondering whether a 3200ME chip would be more suitable for my setup than the 8300 chip.

I am planning to use it on my CDK17 at 1950mm and 2959 focal length
as well as my TE180 which is 1260mm focal length and F7.

The 8300 works quite well with the TEC and only change I would make is using shorter subexposures to prevent bloated bright stars.

The 8300 isn't a great match at 2959 focal length with the smaller pixels (5.4 microns) unless the seeing is really good. I haven't used it at 1950mm yet but I imagine it will perform better.

The 3200ME is much more sensitive and I think is a very good chip for galaxy images which is what I would mainly use it for on the TEC or CDK.
It has slightly larger pixels at 6.6 microns.

But it is also only 3.2 megapixels. Perhaps that is less important but it also has a narrow FOV.

Opinions?

Greg.