Aligning pitch for measurements of the shape of captive bubbles

► Analyzing the shape of captive bubbles requires alignment of the solid support and optics. ► No methods for aligning pitch have been described. ► Misaligned pitch, although difficult to detect, can affect results significantly. ► In contrast to roll, mathematical corrections for incorrect pitch are unavailable. ► These studies show how to align pitch of the camera and then the solid support.