Well, it's a bit late, but I recently went through this process myself, and decided ...
The 224 is a fine camera that is fairly easy to use. It works at a different image scale than the 174MM.
The 174MM, when used correctly with RGB filters, is a tad better (compared on the same targets, same 'scope, same scale, same conditions), but it takes more effort in both acquisition and processing.
Assuming an optical train that delivers a suitable image scale, for the person who wants simplicity and good performance in a OSC camera, the 224 is a good choice.
I have a celestron sct and want to do planetary shots. Can someone here recommend a ccd camera. I want a monochrome ccd and looked at zwo. Could someone please tell me about their experiences with zwo? Are they any good?
Adrian,
I've used the Imaging Source DMK series mono cameras for many years...
Recently I had the need to go for increased frame rates and decided on the ASI174MM.
This suits my f20-f25 system and so far seems to be capable.
Remember a mono will need filters etc. if you want to produce a colour image and to handle the fast frame rates you need a good USB3 connection - and plenty of fast hard drive space.