Advice on using adapters with DSLR please

[Zeffer]

I have been using a nifty adapter from Arthur to put my DSLR on the scope with pleasing results. However, it's a pain constantly changing between the adapter and the 2" diagonal - the screw thread takes an age to line up and I am fumbling with my hands full and gloves on.

If I bought one of these:

http://www.scopesnskies.com/prod/antares/astro-camera-adaptor/2inch-sct/camera.html

and shoved it into the diagonal when the lens comes out, what difference would that make? For example, would the camera be too far from the scope or is focusing affected? I'd rather save the money if it will produce less satisfactory images.

Thanks.

[FLO]

I haven't tried it but I'd guess that it would move the film-plane (CCD) too far from the scope making it difficult to achieve focus.