Might be worth your while to consider a Maksutov Newtonian if you want to use a big fat DSLR, as it puts the camera outside the light path.
Intes Micro makes superb ones in various sizes from 6" to 10" aperture at f/6, Orion makes a 190mm f/5.3 and there are others around f/4.8.
If you want to use Hyperstar I'd forget the DSLR and use something like this
http://www.sxccd.com/sxvr-h814-progressive-scan which won't block the scopes aperture. The other reason for this is that the image scale of Hyperstar is very small and the pixel spacing of your DSLR is too coarse to be a good match.