This AP/Baader tripod adapter will allow you to mount a TeeGull altaz mount, any other mount, camera, or anything else with the standard 3/8" female threaded opening in the bottom.
The adapter is anodized black to match the AP/Baader tripod top and has a flush recessed opening in the center that will allow a standard 3/8" bolt (supplied) to be flush mounted from the bottom. There are also three holes tapped into the sides of the plate that exactly matches the three openings in the AP/Baader tripod top. You could attach with the regular AP knobs (threads are identical), or standard pan-head allen bolts if you preferred.
Cost is $170 + $10 packaging/shipping.