Easy to do if you have a nodel plate.
This is Moose Peterson’s description of how to do it:
http://www.moosepeterson.com/digitaldarkroom/lessons/panoramas.html
To find the nodal point, we’re going to need a stick, branch or some straight line about 3-5 feet in front of the camera. Then we need something in the background, anything about 30-50 feet away from the camera. What we’re going to do is look at the relationship of the stick in the foreground with the object in the background. Then we’re going to slide the nodal plate back and forth in the clamp of the tripod head so that when you pan the camera with the ballhead, the stick and object stay lined up no matter where the camera is directly pointed.
Let’s say you have a car antenna five feet in front of the camera. In the background off in the distance you see a patio umbrella in your neighbor’s backyard. The car antenna is directly centered in front of the umbrella when you look through the lens. It needs to stay in this exact same position as you rotate/pan the camera back and forth. So if the antenna/umbrella are in the dead center of the viewfinder and lined up with each other, when you pan so they are either on the extreme left or right side of the viewfinder, they are still perfectly lined up with each other. If they are not, then you simply move the nodal plate either forward or backwards until they remained lined up when you pan. It’s really easy and takes only a few moments. If you’re using the RRS MPR-CL, D2H and 28mmPC on the BH-55 head, all you have to do is line up the grove on the end MPR-CL with the leading edge on the BH-55 clamp and you’re there. Whether by accident or design, it works every time. With your nodal point determined, you’re ready to go.