I've droolled for a 10" or larger Dobsonian, and you can build them pretty cheap once you get the mirror.
But, me and a buddy were just talking about the CCD cameras you put on the eye piece, have a tracking mount, and view/observe from your couch on the big screen or on your computer to digitally record time lapse.
Google it, but people are using webcams with the lens removed, or a DSLR body only, and such.
1st Attempt with DIY Astro CCD Cam - YouTube
Another project I don't have time for......