I am close to the weight limit with this setup. By adding the ball head, I can point the lens anywhere in the sky and keep the counterweight pointed down so it is in really good balance for at least an hour or two.I have looked at it, but my current weight with first gen 500VR plus D3s is over capacity. To handle the weight my cost for a mount goes up over a grand, not willing to do that just yet. I have borrowed a EQ rig before, how I got my shot of comet Lovejoy, and pairing of Lovejoy and Pleiades. thanks for the info.