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Sean, the scope you linked to is only as good as a dobsonian for photography. Yes, while it tracks, it isn't aligned with Earth's axis and the result is rotation of the image. For good astrophotography you need an equatorial mount. Good mounts are important for stability & reliability. Especially if you want to do more than take wide field shots.
Other more qualified people can make gear suggestions gear wise for photography. The furtherest I take it if basic video imaging with my old but trusty Celestron C8, but it too is equatorially mounted. No processing, just live viewing on a tv screen. But it's enough to show me a colour image of Eta Carina & Orion nebulae from home in Sydney.
Mental.
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