I popped over and checked the binoculars and they look like they should mount on the removable plate of this tripod, which then just snaps into the ball mount. According to the specs, the chrome rod in the center, is the mount for them. Then you screw the tripod plate into that.
Did your Celestron 20x80 binoculars come with the integrated tripod adapter rod? If it did read the manual to make sure the thread size matches up with the thread size on this tripod. I would assume the adapter rod would be the universal size for all standard tripods but its always good to check.