How is the focuser on it, I have the WO 81 GTF and there is a little sag from my ccd camera.
I've only got about two nights worth of imaging on mine but have not noticed any problems - the focuser seems rock solid. I was imaging the Crescent Nebula so I was oriented within 45 degrees of the zenith, not close to the horizon.
I have a filter wheel and Atik 460ex mounted on it. The 460ex is longish, moving the center of gravity farther back but the focuser shows no sign of sag. Here is a link to the image if you are interested: http://www.meadowlar...bservatory.com/