[Peter Ward]

There are limits on how much gear I can get my hands on, but, the suggestion that a single shot colour CCD/DSLR comparison be done is an interesting one which I hope to follow up.

As for subjectivity vs objectivity. I must be losing something in the translation.

Objectivity pertains to facts, things you can easily measure. Good old scientific method.
eg. SLK McLaren Benz will do 0-100pkh in 3.8 secs.
Hyuandai won't. So what? Nothing new or surprising here.

Subjectivity pertains to how you feel about something or an opinion. Not easily measured.

So, getting back to the original post. Yep, it is pretty obvious given the same flux, a dedicated medium QE CCD astrocam shows higher dynamic range, better QE, lower noise etc than on off the shelf Premium DSLR

Everything else (cost, possible modifications, your shoe size) doesn't change the result.

Now, if I can just find that U47 power pack....

Cheers
Peter