Good point. In alt/az the dec drive is constantly correcting to maintain the object being tracked in the FOV. In the day when all fork mounted SCTs were sold on a wedge alt/Dec drives were an option as most visual users made the minimal adjustments necessary manually. Only when photographers wanted to avoid the vibrations inherent in manual corrections did they fit, what at the time, was a pretty expensive drive. Of couse most photos were done in loooog exposures on film at that time.
But even with the LX90's built in alt drive there will be vibrations induced as it cycles its corrections. Given the cogging problems with some LX90's alt drives, the EQ position is a great improvement. As Pete says, a weight on the right fork will help take the backlash out of the Az drive. A shot filled ankle or wrist weight with Velcro straps works well.
The wedge itself can be had used for well under a hundred. The adapter is pretty much just a disk with the threaded holes that mate with the wedge tilt plate's. You can experiment without a hugh outlay by making an adapter out of 19mm plywood and three 3/8" T-nuts. A half inch hole and bolt with a fender washer in the center completes your adapter. Good luck.
--- In email@example.com, "Peter" <peter.huesmann@...> wrote:
> I use a wedge and run in polar mode with my 8" LX90 GPS. I prefer this mode myself because it seem smoother and I believe puts less strain on the drives. I also use a balancing weight to ease the strain on the drives as well.