Hi Steffen, the scope was a 14.5" f/5 newtonian, there's a picture here:
http://www.acquerra.com.au/astro/equipment/Nemesis-16/
I'm using a Point Grey Research camera called Dragonfly2, a TV 5x powermate to increase the image scale, and astrodon RGB filters.
The camera runs at about 25fps for Saturn, and I capture 90 seconds in each filter, so there's about 2500 raw frames available and I normally stack about 1400 of the best frames.
cheers, Bird